TABLE OF CONTENTS - autocats.wsautocats.ws/manual/dodge/dr/15835-drpw_sgmldiag.pdf · 4.2.2 vehicle preparation for testing ... *no response from pcm (pci bus) - diesel only ... table

TABLE OF CONTENTS

1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

1.1 SYSTEM COVERAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11.2 SIX-STEP TROUBLE SHOOTING PROCEDURE. . . . . . . . . . . . . . . . . . . . . . . . . .1

2.0 IDENTIFICATION OF SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

3.0 SYSTEM DESCRIPTION AND FUNCTIONAL OPERATION . . . . . . . . . . . . . . . . . . . . . .2

3.1 GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23.2 FUNCTION OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

3.2.1 FUEL CONTROL (GAS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33.2.2 ON-BOARD DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33.2.3 TRANSMISSION CONTROL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113.2.3.1 TRANSMISSION OPERATION AND SHIFT SCHEDULING AT

VARIOUS OIL TEMPERATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123.2.3.2 LINE PRESSURE CONTROL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123.2.3.3 DRIVE LEARN PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123.2.4 TRANSMISSION CONTROL (RE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .143.2.5 O2 SENSOR (NGC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .163.2.6 OTHER CONTROLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .163.2.7 NON-MONITORED CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

3.3 DIAGNOSTIC TROUBLE CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .253.3.1 HARD CODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .263.3.2 ONE TRIP FAILURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .263.3.3 INTERMITTENT CODE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .263.3.4 STARTS SINCE SET COUNTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .263.3.5 TROUBLE CODE ERASURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .273.3.6 QUICK LEARN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .273.3.7 CLUTCH VOLUMES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .273.3.8 NO START INFORMATION (POWERTRAIN) . . . . . . . . . . . . . . . . . . . .28

3.4 USING THE DRBIIIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .283.5 DRBIIIT ERROR MESSAGES AND BLANK SCREEN . . . . . . . . . . . . . . . . . . . . .28

3.5.1 DRBIIIT DOES NOT POWER UP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .283.5.2 DISPLAY IS NOT VISIBLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .293.5.3 SOME DISPLAY ITEMS READ ___ . . . . . . . . . . . . . . . . . . . . . . . . . .29

3.6 EATX DTC EVENT DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .293.7 TRANSMISSION SIMULATOR (MILLER TOOL # 8333) AND ELECTRONIC

TRANSMISSION ADAPTER KIT (MILLER TOOL #8333-1A) . . . . . . . . . . . . . . 29

4.0 DISCLAIMERS, SAFETY, WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

4.1 DISCLAIMERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .304.2 SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

4.2.1 TECHNICIAN SAFETY INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . .304.2.2 VEHICLE PREPARATION FOR TESTING. . . . . . . . . . . . . . . . . . . . . . .304.2.3 SEVICING SUB-ASSEMBLIES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .304.2.4 DRBIIIT SAFETY INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

4.3 WARNINGS AND CAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .314.3.1 ROAD TEST WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .314.3.1 VEHICLE DAMAGE WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .314.3.2 ROAD TESTING A COMPLAINT VEHICLE (TRANSMISSION) . . . . . .314.3.3 ELECTRONIC PINION FACTOR WARNINGS (IF APPLICABLE) . . . .324.4.4 BULLETINS AND RECALLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

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TABLE OF CONTENTS - Continued

5.0 REQUIRED TOOLS AND EQUIPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

6.0 ACRONYMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

6.2 DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

7.0 DIAGNOSTIC INFORMATION AND PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . .35

COMMUNICATION*NO RESPONSE FROM ECM (PCI BUS) - DIESEL ONLY . . . . . . . . . . . . . . . . . . . . . .36*NO RESPONSE FROM ECM (SCI ONLY) - DIESEL ONLY . . . . . . . . . . . . . . . . . . . . .38*NO RESPONSE FROM FRONT CONTROL MODULE . . . . . . . . . . . . . . . . . . . . . . . . .40*NO RESPONSE FROM PCM (PCI BUS) - DIESEL ONLY . . . . . . . . . . . . . . . . . . . . . .42*NO RESPONSE FROM PCM (PCI BUS) - JTEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44*NO RESPONSE FROM PCM (PCI BUS) - NGC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45*NO RESPONSE FROM PCM (PCM SCI ONLY) - NGC . . . . . . . . . . . . . . . . . . . . . . . .46*NO RESPONSE FROM PCM (SCI ONLY) - DIESEL ONLY . . . . . . . . . . . . . . . . . . . . .49*NO RESPONSE FROM PCM (SCI ONLY) - JTEC . . . . . . . . . . . . . . . . . . . . . . . . . . . .51*NO RESPONSE FROM SENTRY KEY IMMOBILIZER MODULE . . . . . . . . . . . . . . . .54*NO RESPONSE FROM TRANSFER CASE CONTROL MODULE. . . . . . . . . . . . . . . .56*NO RESPONSE FROM TRANSMISSION CONTROL MODULE - 3.7/5.7 . . . . . . . . . .58*NO RESPONSE FROM TRANSMISSION CONTROL MODULE - 4.7 . . . . . . . . . . . . .61*PCI BUS COMMUNICATION FAILURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

DRIVEABILITY - DIESELINTERMITTENT CONDITION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67P0016-ENGINE SPEED SIGNAL MISMATCH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68P0071-INLET AIR TEMP SENSOR RATIONALITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69P0072-INLET AIR TEMP SENSOR VOLTAGE TOO LOW . . . . . . . . . . . . . . . . . . . . . . .70P0073-INLET AIR TEMP SENSOR VOLTAGE TOO HIGH. . . . . . . . . . . . . . . . . . . . . . .72P0088-FUEL RAIL PRESSURE SIGNAL IS ABOVE MAX LIMIT . . . . . . . . . . . . . . . . . .74P0106-INLET AIR PRESSURE SENSOR RATIONALITY . . . . . . . . . . . . . . . . . . . . . . . .75P0107-INLET AIR PRESSURE SENSOR VOLTAGE TOO LOW . . . . . . . . . . . . . . . . . .76P0108-INLET AIR PRESSURE SENSOR VOLTAGE TOO HIGH. . . . . . . . . . . . . . . . . .79P0111-INTAKE AIR TEMPERATURE (IAT) SENSOR RATIONALITY. . . . . . . . . . . . . . .81P0112-INTAKE AIR TEMPERATURE (IAT) SENSOR VOLTAGE TOO LOW. . . . . . . . .82P0113-INTAKE AIR TEMPERATURE (IAT) SENSOR VOLTAGE TOO HIGH . . . . . . . .84P0116-ENGINE COOLANT TEMPERATURE (ECT) SENSOR RATIONALITY . . . . . . .86P0117-ENGINE COOLANT TEMPERATURE (ECT) SENSOR VOLTAGETOO LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87P0118-ENGINE COOLANT TEMPERATURE (ECT) SENSOR VOLTAGETOO HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89P0128-THERMOSTAT RATIONALITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91P0148-HIGH PRESSURE COMMON RAIL (HPCR) CHECKSUM . . . . . . . . . . . . . . . . .92P0169-WATER IN FUEL (WIF) LIGHT ON TOO LONG . . . . . . . . . . . . . . . . . . . . . . . . .95P0192-FUEL PRESSURE SENSOR VOLTAGE TOO LOW . . . . . . . . . . . . . . . . . . . . . .96P0193-FUEL PRESSURE SENSOR VOLTAGE TOO HIGH. . . . . . . . . . . . . . . . . . . . . .99P0201-INJECTOR #1 CONTROL CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101P0202-INJECTOR #2 CONTROL CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101P0203-INJECTOR #3 CONTROL CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101P0204-INJECTOR #4 CONTROL CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101P0205-INJECTOR #5 CONTROL CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101P0206-INJECTOR #6 CONTROL CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101

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P0217-DECREASED ENGINE PERFORMANCE DUE TO ENGINE OVERHEATCONDITION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104P0219-CRANKSHAFT POSITION SENSOR OVER SPEED SIGNAL . . . . . . . . . . . . .105P0234-TURBO BOOST LIMIT EXCEEDED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106P0236-MAP SENSOR TOO HIGH TOO LONG. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107P0237-MAP SENSOR VOLTAGE TOO LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108P0238-MAP SENSOR VOLTAGE TOO HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111P0251-CP3 PUMP REGULATOR CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114P0300-MULTIPLE CYLINDER MISFIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116P0301-CYLINDER # 1 MISFIRE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116P0302-CYLINDER # 2 MISFIRE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116P0303-CYLINDER # 3 MISFIRE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116P0304-CYLINDER # 4 MISFIRE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116P0305-CYLINDER # 5 MISFIRE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116P0306-CYLINDER # 6 MISFIRE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116P0335-CRANKSHAFT POSITION (CKP) LOST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120P0336-CRANKSHAFT POSITION (CKP) SENSOR SIGNAL . . . . . . . . . . . . . . . . . . . .123P0337-CRANKSHAFT POSITION (CKP) SENSOR VOLTAGE TOO LOW . . . . . . . . .126P0338-CRANKSHAFT POSITION (CKP) SENSOR VOLTAGE TOO HIGH. . . . . . . . .128P0340-CAMSHAFT POSITION (CMP) LOST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129P0341-CAMSHAFT POSITION (CMP) SENSOR SIGNAL . . . . . . . . . . . . . . . . . . . . . .132P0381-WAIT TO START LAMP INOPERATIVE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135P0461-FUEL LEVEL UNIT NO CHANGE OVER TIME. . . . . . . . . . . . . . . . . . . . . . . . .138P0462-LOW VOLTAGE DETECTED AT THE FUEL LEVEL SENSOR. . . . . . . . . . . . .140P0463-HIGH VOLTAGE DETECTED AT THE FUEL LEVEL SENSOR . . . . . . . . . . . .142P0477-LOW VOLTAGE ON THE ENGINE BRAKE DRIVER . . . . . . . . . . . . . . . . . . . .143P0478-HIGH VOLTAGE ON THE ENGINE BRAKE DRIVER . . . . . . . . . . . . . . . . . . . .145P0480-FAN CLUTCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .147P0483-FAN SPEED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .149P0500-NO VEHICLE SPEED SENSOR SIGNAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152P0514-BAT TEMPERATURE SENSOR RATIONALITY . . . . . . . . . . . . . . . . . . . . . . . .154P0516-LOW VOLTAGE AT THE BAT TEMP SENSOR . . . . . . . . . . . . . . . . . . . . . . . . .155P0521-OIL PRESSURE SWITCH RATIONALITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . .159P0524-OIL PRESSURE TOO LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .161P0533-A/C SENDING UNIT VOLTS TOO HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .165P0541-LOW VOLTAGE ON THE #1 INTAKE AIR HEATER RELAY. . . . . . . . . . . . . . .167P2607-LOW VOLTAGE AT THE #2 INTAKE AIR HEATER RELAY . . . . . . . . . . . . . . .167P0542-HIGH VOLTAGE ON THE #1 INTAKE AIR HEATER RELAY . . . . . . . . . . . . . .169P2608-HIGH VOLTAGE AT THE #2 INTAKE AIR HEATER RELAY . . . . . . . . . . . . . . .169P0562-BATTERY VOLTAGE LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .171P0563-BATTERY VOLTAGE HIGH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .173P0572-LOW VOLTAGE DETECTED AT THE BRAKE SWITCH . . . . . . . . . . . . . . . . . .175P0573-HIGH VOLTAGE DETECTED AT THE BRAKE SWITCH . . . . . . . . . . . . . . . . .176P0580-LOW VOLTAGE DETECTED AT THE CRUISE CONTROL SWITCH. . . . . . . .177P0581-HIGH VOLTAGE DETECTED AT THE CRUISE CONTROL SWITCH . . . . . . .179P0602-CHECKSUM ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .182P0604-ECM SOFTWARE ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .183P0606-ECM HARDWARE ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .184P0607-ECM INTERNAL FAILURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .185P0622-GENERATOR FIELD NOT SWITCHING PROPERLY . . . . . . . . . . . . . . . . . . . .186P0628-LOW VOLTAGE DETECTED AT THE FUEL LIFT PUMP . . . . . . . . . . . . . . . . .188P0629-HIGH VOLTAGE DETECTED AT THE FUEL LIFT PUMP. . . . . . . . . . . . . . . . .190P0630-VIN NOT ENTERED ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .192

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P0633-SKIM SECRET KEY NOT ENTERED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .193P0642-LOW VOLTAGE AT THE #2 SENSOR SUPPLY CIRCUIT . . . . . . . . . . . . . . . .194P0646-LOW VOLTAGE DETECTED AT THE A/C CLUTCH RELAY . . . . . . . . . . . . . .196P0647-HIGH VOLTAGE DETECTED AT THE A/C CLUTCH RELAY . . . . . . . . . . . . . .198P0652-LOW VOLTAGE AT THE #1 SENSOR SUPPLY CIRCUIT . . . . . . . . . . . . . . . .200P0653-HIGH VOLTAGE AT THE #1 SENSOR SUPPLY CIRCUIT . . . . . . . . . . . . . . . .201P0698-ACCELERATOR POSITION SENSOR (APP) SUPPLY VOLTAGE TOOLOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .202P0699-ACCELERATOR POSITION SENSOR (APP) SUPPLY VOLTAGE TOOHIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205P0700-TRANSMISSION MESSAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .208P1652-J1850 SHORT TO GROUND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .209P2121-APP VOLTS DO NOT AGREE WITH IDLE VALIDATION SIGNAL. . . . . . . . . .210P2122-LOW VOLTAGE AT THE APP SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .213P2123-HIGH VOLTAGE AT THE APP SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .219P2127-LOW VOLTAGE AT THE THROTTLE VALIDATION SWITCH. . . . . . . . . . . . . .223P2128-HIGH VOLTAGE AT THE THROTTLE VALIDATION SWITCH . . . . . . . . . . . . .227P2146-BANK 1 (CYLINDERS 1-3) SHORTED HIGH OR LOW . . . . . . . . . . . . . . . . . .231P2149-BANK 2 (CYLINDERS 4-6) SHORTED HIGH OR LOW . . . . . . . . . . . . . . . . . .235P2266-WATER IN FUEL (WIF) SENSOR VOLTAGE TOO LOW . . . . . . . . . . . . . . . . .239P2269-WATER IN FUEL (WIF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .241P2502-CHARGING SYSTEM ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .242P2503-CHARGING SYSTEM LOW ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .244P2504-CHARGING SYSTEM HIGH ERROR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .246P2509-POWERDOWN DATA LOST ERROR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .248*CHECKING PRESSURE LIMITING VALVE ON THE FUEL RAIL FOR INTERNALLEAKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .250*CHECKING THE ACCELERATOR PEDAL SENSOR CALIBRATION. . . . . . . . . . . . .251*CHECKING THE ECM POWER AND GROUNDS. . . . . . . . . . . . . . . . . . . . . . . . . . . .252*CHECKING THE PCM POWER AND GROUNDS. . . . . . . . . . . . . . . . . . . . . . . . . . . .253*ENGINE DIFFICULT TO START OR WILL NOT START (EXHAUST SMOKE) . . . . .254*ENGINE DIFFICULT TO START OR WILL NOT START (NO EXHAUST SMOKEWHILE CRANKING) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .255*ENGINE SPEED SURGES IN PTO OR CRUISE CONTROL . . . . . . . . . . . . . . . . . . .256*ENGINE SPEED SURGES LOW OR HIGH IDLE . . . . . . . . . . . . . . . . . . . . . . . . . . . .257*ENGINE SPEED SURGES UNDER LOAD OR IN OPERATING RANGE . . . . . . . . .258*FUEL HEATER THERMOSTAT TEST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .259*FUEL LIFT PUMP FLOW AND INLET RESTRICTION TEST . . . . . . . . . . . . . . . . . . .260*EXCESSIVE INJECTOR RETURN FLOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .261*FUEL SYSTEM VACUUM TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .262*HIGH PRESSURE FUEL PUMP PERFORMANCE TEST. . . . . . . . . . . . . . . . . . . . . .263*INJECTOR RETURN FLOW TEST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .264*INTAKE AIR SYSTEM PRESSURE TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .265

DRIVEABILITY - GASINTERMITTENT CONDITION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .266P0031-O2 SENSOR 1/1 HEATER CIRCUIT LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . .267P0032-O2 SENSOR 1/1 HEATER CIRCUIT HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . .267P0037-O2 SENSOR 1/2 HEATER CIRCUIT LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . .267P0038-O2 SENSOR 1/2 HEATER CIRCUIT HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . .267P0051-O2 SENSOR 2/1 HEATER CIRCUIT LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . .267P0052-O2 SENSOR 2/1 HEATER CIRCUIT HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . .267P0071-AMBIENT/BATTERY TEMP SENSOR PERFORMANCE . . . . . . . . . . . . . . . . .270

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P0107-MAP SENSOR VOLTAGE TOO LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .273P0108-MAP SENSOR VOLTAGE TOO HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .275P0111-INTAKE AIR TEMP PERFORMANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .277P0112-INTAKE AIR TEMP SENSOR VOLTAGE TOO LOW . . . . . . . . . . . . . . . . . . . . .279P0113-INTAKE AIR TEMP SENSOR VOLTAGE TOO HIGH . . . . . . . . . . . . . . . . . . . .281P0117-ENGINE COOLANT TEMP SENSOR VOLTAGE TOO LOW . . . . . . . . . . . . . .283P0118-ENGINE COOLANT TEMP SENSOR VOLTAGE TOO HIGH . . . . . . . . . . . . . .285P0121-TP SENSOR VOLTAGE DOES NOT AGREE WITH MAP . . . . . . . . . . . . . . . .287P0122-THROTTLE POSITION SENSOR #1 VOLTAGE TOO LOW. . . . . . . . . . . . . . .292P0123-THROTTLE POSITION SENSOR #1 VOLTAGE TOO HIGH . . . . . . . . . . . . . .295P0125-CLOSED LOOP TEMP NOT REACHED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .298P0131-O2 SENSOR 1/1 CIRCUIT VOLTAGE TOO LOW . . . . . . . . . . . . . . . . . . . . . . .300P0137-O2 SENSOR 1/2 CIRCUIT VOLTAGE TOO LOW . . . . . . . . . . . . . . . . . . . . . . .300P0151-O2 SENSOR 2/1 CIRCUIT VOLTAGE TOO LOW . . . . . . . . . . . . . . . . . . . . . . .300P0157-O2 SENSOR 2/2 CIRCUIT VOLTAGE TOO LOW . . . . . . . . . . . . . . . . . . . . . . .300P0132-O2 SENSOR 1/1 CIRCUIT VOLTAGE TOO HIGH . . . . . . . . . . . . . . . . . . . . . .303P0138-O2 SENSOR 1/2 CIRCUIT VOLTAGE TOO HIGH . . . . . . . . . . . . . . . . . . . . . .303P0152-O2 SENSOR 2/1 CIRCUIT VOLTAGE TOO HIGH . . . . . . . . . . . . . . . . . . . . . .303P0158-O2 SENSOR 2/2 CIRCUIT VOLTAGE TOO HIGH . . . . . . . . . . . . . . . . . . . . . .303P0133-O2 SENSOR 1/1 SLOW RESPONSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .307P0139-O2 SENSOR 1/2 SLOW RESPONSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .307P0153-O2 SENSOR 2/1 SLOW RESPONSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .307P0159-O2 SENSOR 2/2 SLOW RESPONSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .307P0135-O2 SENSOR 1/1 HEATER FAILURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .310P0141-O2 SENSOR 1/2 HEATER FAILURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .310P0155-O2 SENSOR 2/1 HEATER FAILURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .310P0161-O2 SENSOR 2/2 HEATER FAILURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .310P0136-O2 SENSOR 1/2 HEATER CIRCUIT MALFUNCTION . . . . . . . . . . . . . . . . . . .313P0171-1/1 FUEL SYSTEM LEAN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .315P0174-2/1 FUEL SYSTEM LEAN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .315P0172-1/1 FUEL SYSTEM RICH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .320P0175-2/1 FUEL SYSTEM RICH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .320P0201-INJECTOR #1 CONTROL CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .325P0202-INJECTOR #2 CONTROL CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .325P0203-INJECTOR #3 CONTROL CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .325P0204-INJECTOR #4 CONTROL CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .325P0205-INJECTOR #5 CONTROL CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .325P0206-INJECTOR #6 CONTROL CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .325P0207-INJECTOR #7 CONTROL CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .325P0208-INJECTOR #8 CONTROL CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .325P0209-INJECTOR #9 CONTROL CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .325P0210-INJECTOR #10 CONTROL CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .325P0300-MULTIPLE CYLINDER MIS-FIRE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .329P0301-CYLINDER #1 MISFIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .329P0302-CYLINDER #2 MISFIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .329P0303-CYLINDER #3 MISFIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .329P0304-CYLINDER #4 MISFIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .329P0305-CYLINDER #5 MISFIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .329P0306-CYLINDER #6 MISFIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .329P0307-CYLINDER #7 MISFIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .329P0308-CYLINDER #8 MISFIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .329P0309-CYLINDER #9 MISFIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .329P0310-CYLINDER #10 MISFIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .329

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P0320-NO CRANK REFERENCE SIGNAL AT PCM. . . . . . . . . . . . . . . . . . . . . . . . . . .337P0325-KNOCK SENSOR #1 CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .341P0330-KNOCK SENSOR #2 CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .341P0340-NO CAM REFERENCE SIGNAL AT PCM . . . . . . . . . . . . . . . . . . . . . . . . . . . . .344P0351-IGNITION COIL #1 PRIMARY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .348P0352-IGNITION COIL #2 PRIMARY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .348P0353-IGNITION COIL #3 PRIMARY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .348P0354-IGNITION COIL #4 PRIMARY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .348P0355-IGNITION COIL #5 PRIMARY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .348P0351-IGNITION COIL #1 PRIMARY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .351P0352-IGNITION COIL #2 PRIMARY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .351P0353-IGNITION COIL #3 PRIMARY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .351P0354-IGNITION COIL #4 PRIMARY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .351P0355-IGNITION COIL #5 PRIMARY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .351P0356-IGNITION COIL #6 PRIMARY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .351P0420-1/1 CATALYTIC CONVERTER EFFICIENCY. . . . . . . . . . . . . . . . . . . . . . . . . . .355P0432-2/1 CATALYTIC CONVERTER EFFICIENCY. . . . . . . . . . . . . . . . . . . . . . . . . . .355P0441-EVAP PURGE FLOW MONITOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .357P0442-EVAP LEAK MONITOR MEDIUM (0.040) LEAK DETECTED. . . . . . . . . . . . . .359P0455-EVAP LEAK MONITOR LARGE LEAK DETECTED . . . . . . . . . . . . . . . . . . . . .359P0456-EVAP LEAK MONITOR SMALL (.020) LEAK DETECTED . . . . . . . . . . . . . . . .359P0443-EVAP PURGE SOLENOID CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .362P0460-FUEL LEVEL SENDING UNIT NO CHANGE OVER MILES. . . . . . . . . . . . . . .364P0461-FUEL LEVEL SENDING UNIT NO CHANGE OVER TIME . . . . . . . . . . . . . . . .364P0462-FUEL LEVEL SENDING UNIT VOLTS TOO LOW. . . . . . . . . . . . . . . . . . . . . . .365P0463-FUEL LEVEL SENDING UNIT VOLTS TOO HIGH . . . . . . . . . . . . . . . . . . . . . .367P0500-NO VEHICLE SPEED SIGNAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .369P0505-IDLE AIR CONTROL MOTOR CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .371P0523-OIL PRESSURE CIRCUIT HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .373P0551-POWER STEERING SWITCH FAILURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .375P0601-PCM INTERNAL CONTROLLER FAILURE . . . . . . . . . . . . . . . . . . . . . . . . . . . .377P0622-GENERATOR FIELD NOT SWITCHING PROPERLY . . . . . . . . . . . . . . . . . . . .378P0645-A/C CLUTCH RELAY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .380P0700-TRANSMISSION CONTROL SYSTEM (MIL REQUEST) . . . . . . . . . . . . . . . . .382P1195-O2 SENSOR 1/1 SLOW DURING CATALYST MONITOR . . . . . . . . . . . . . . . .383P1196-O2 SENSOR 2/1 SLOW DURING CATALYST MONITOR . . . . . . . . . . . . . . . .383P1281-ENGINE IS COLD TOO LONG. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .385P1282-FUEL PUMP/SYSTEM RELAY CONTROL CIRCUIT . . . . . . . . . . . . . . . . . . . .386P1294-TARGET IDLE NOT REACHED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .388P1296-NO 5-VOLTS TO MAP SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .390P1297-NO CHANGE IN MAP FROM START TO RUN. . . . . . . . . . . . . . . . . . . . . . . . .392P1299-VACUUM LEAK FOUND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .395P1388-AUTO SHUTDOWN RELAY CONTROL CIRCUIT. . . . . . . . . . . . . . . . . . . . . . .396P1389-NO ASD RELAY OUTPUT VOLTAGE AT PCM . . . . . . . . . . . . . . . . . . . . . . . . .398P1391-INTERMITTENT LOSS OF CMP OR CKP. . . . . . . . . . . . . . . . . . . . . . . . . . . . .400P1398-MIS-FIRE ADAPTIVE NUMERATOR AT LIMIT . . . . . . . . . . . . . . . . . . . . . . . . .404P1486-EVAP LEAK MONITOR PINCHED HOSE FOUND . . . . . . . . . . . . . . . . . . . . . .407P1491-COOLING FAN RELAY CONTROL CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . .409P1492-AMBIENT/BATTERY TEMPERATURE SENSOR VOLTAGE TOO HIGH . . . . .411P1493-AMBIENT/BATTERY TEMPERATURE SENSOR VOLTAGE TOO LOW . . . . .413P1494-LEAK DETECTION PUMP SWITCH OR MECHANICAL FAULT . . . . . . . . . . .415P1495-LEAK DETECTION PUMP SOLENOID CIRCUIT . . . . . . . . . . . . . . . . . . . . . . .417P1594-CHARGING SYSTEM VOLTAGE TOO HIGH . . . . . . . . . . . . . . . . . . . . . . . . . .419

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P1595-SPEED CONTROL SOLENOID CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . .421P1683-SPD CTRL PWR RELAY; OR S/C 12V DRIVER CKT . . . . . . . . . . . . . . . . . . .421P1596-SPEED CONTROL SWITCH ALWAYS HIGH . . . . . . . . . . . . . . . . . . . . . . . . . .425P1597-SPEED CONTROL SWITCH ALWAYS LOW . . . . . . . . . . . . . . . . . . . . . . . . . . .428P1598-A/C PRESSURE SENSOR VOLTAGE TOO HIGH . . . . . . . . . . . . . . . . . . . . . .430P1599-A/C PRESSURE SENSOR VOLTAGE TOO LOW. . . . . . . . . . . . . . . . . . . . . . .432P1682-CHARGING SYSTEM VOLTAGE TOO LOW. . . . . . . . . . . . . . . . . . . . . . . . . . .434P1685-WRONG OR INVALID KEY MSG RECEIVED FROM SKIM. . . . . . . . . . . . . . .437P1686-NO SKIM BUS MESSAGE RECEIVED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .439P1687-NO CLUSTER BUS MESSAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .441P1696-PCM FAILURE EEPROM WRITE DENIED . . . . . . . . . . . . . . . . . . . . . . . . . . . .442P1698-NO BUS MESSAGE FROM TCM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .443P1899- TRS PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .445*BRAKE SWITCH SENSE STATUS DOES NOT CHANGE ON DRBIIIT . . . . . . . . . . .447*CHECKING A/C SYSTEM OPERATION WITH NO DTCS . . . . . . . . . . . . . . . . . . . . .450*CHECKING CHARGING SYSTEM OPERATION WITH NO DTCS . . . . . . . . . . . . . .453*CHECKING CONDENSER FAN OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .456*CHECKING THE PCM POWER AND GROUNDS. . . . . . . . . . . . . . . . . . . . . . . . . . . .458

DRIVEABILITY - NGCINTERMITTENT CONDITION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .459P0016-CRANKSHAFT/CAMSHAFT TIMING MISALIGNMENT . . . . . . . . . . . . . . . . . .460P0031-O2 SENSOR 1/1 HEATER CIRCUIT LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . .464P0037-O2 SENSOR 1/2 HEATER CIRCUIT LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . .464P0051-O2 SENSOR 2/1 HEATER CIRCUIT LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . .464P0057-O2 SENSOR 2/2 HEATER CIRCUIT LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . .464P0032-O2 SENSOR 1/1 HEATER CIRCUIT HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . .467P0038-O2 SENSOR 1/2 HEATER CIRCUIT HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . .467P0052-O2 SENSOR 2/1 HEATER CIRCUIT HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . .467P0058-O2 SENSOR 2/2 HEATER CIRCUIT HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . .467P0068-MAP SENSOR/TP SENSOR CORRELATION - VACUUM LEAKDETECTED (4.7L). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .470P0068-MAP SENSOR/TP SENSOR CORRELATION - VACUUM LEAKDETECTED (5.7L). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .476P2172-HIGH AIR FLOW/VACUUM LEAK DETECTED (INSTANTANEOUSACCUMULATION) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .476P2173-HIGH AIRFLOW/VACUUM LEAK DETECTED (SLOW ACCUMULATION) . . .476P0070-AMBIENT TEMPERATURE SENSOR STUCK . . . . . . . . . . . . . . . . . . . . . . . . .482P0071-AMBIENT TEMPERATURE SENSOR PERFORMANCE . . . . . . . . . . . . . . . . .482P0072-AMBIENT TEMPERATURE SENSOR CIRCUIT LOW . . . . . . . . . . . . . . . . . . .485P0073-AMBIENT TEMPERATURE SENSOR CIRCUIT HIGH . . . . . . . . . . . . . . . . . . .487P0106-MAP SENSOR PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .489P0107-MAP SENSOR CIRCUIT LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .492P0108-MAP SENSOR CIRCUIT HIGH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .494P0110-INTAKE AIR TEMPERATURE SENSOR STUCK. . . . . . . . . . . . . . . . . . . . . . . .496P0111-INTAKE AIR TEMPERATURE SENSOR PERFORMANCE. . . . . . . . . . . . . . . .496P0112-INTAKE AIR TEMPERATURE SENSOR CIRCUIT LOW. . . . . . . . . . . . . . . . . .499P0113-INTAKE AIR TEMPERATURE SENSOR CIRCUIT HIGH . . . . . . . . . . . . . . . . .501P0116-ENGINE COOLANT TEMPERATURE CIRCUIT PERFORMANCE. . . . . . . . . .503P0117-ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT LOW . . . . . . . . . . .506P0118-ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT HIGH . . . . . . . . . . .508P0121-THROTTLE POSITION SENSOR #1 PERFORMANCE (4.7L) . . . . . . . . . . . . .510P0121-THROTTLE POSITION SENSOR #1 PERFORMANCE (5.7L) . . . . . . . . . . . . .514

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P0221-THROTTLE POSITION SENSOR #2 PERFORMANCE . . . . . . . . . . . . . . . . . .514P2135-THROTTLE POSITION SENSOR #1 AND #2 VOLTAGE CORRELATION . . .514P0122-THROTTLE POSITION SENSOR #1 LOW (4.7L) . . . . . . . . . . . . . . . . . . . . . . .518P0122-THROTTLE POSITION SENSOR #1 LOW (5.7L) . . . . . . . . . . . . . . . . . . . . . . .521P0123-THROTTLE POSITION SENSOR #1 HIGH (4.7L) . . . . . . . . . . . . . . . . . . . . . .524P0123-THROTTLE POSITION SENSOR #1 HIGH (5.7L) . . . . . . . . . . . . . . . . . . . . . .527P0125-INSUFFICIENT COOLANT TEMP FOR CLOSED-LOOP FUEL CONTROL . .530P0128-THERMOSTAT RATIONALITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .532P0129-BAROMETRIC PRESSURE OUT-OF-RANGE . . . . . . . . . . . . . . . . . . . . . . . . .537P0131-O2 SENSOR 1/1 CIRCUIT LOW VOLTAGE . . . . . . . . . . . . . . . . . . . . . . . . . . .540P0137-O2 SENSOR 1/2 CIRCUIT LOW VOLTAGE . . . . . . . . . . . . . . . . . . . . . . . . . . .540P0151-O2 SENSOR 2/1 CIRCUIT LOW VOLTAGE . . . . . . . . . . . . . . . . . . . . . . . . . . .540P0157-O2 SENSOR 2/2 CIRCUIT LOW VOLTAGE . . . . . . . . . . . . . . . . . . . . . . . . . . .540P0132-O2 SENSOR 1/1 CIRCUIT HIGH VOLTAGE . . . . . . . . . . . . . . . . . . . . . . . . . . .543P0138-O2 SENSOR 1/2 CIRCUIT HIGH VOLTAGE . . . . . . . . . . . . . . . . . . . . . . . . . . .543P0152-O2 SENSOR 2/1 CIRCUIT HIGH VOLTAGE . . . . . . . . . . . . . . . . . . . . . . . . . . .543P0158-O2 SENSOR 2/2 CIRCUIT HIGH VOLTAGE . . . . . . . . . . . . . . . . . . . . . . . . . . .543P0133-O2 SENSOR 1/1 SLOW RESPONSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .546P0139-O2 SENSOR 1/2 SLOW RESPONSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .546P0153-O2 SENSOR 2/1 SLOW RESPONSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .546P0159-O2 SENSOR 2/2 SLOW RESPONSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .546P0135-O2 SENSOR 1/1 HEATER PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . .549P0141-O2 SENSOR 1/2 HEATER PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . .549P0155-O2 SENSOR 2/1 HEATER PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . .549P0161-O2 SENSOR 2/2 HEATER PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . .549P0171-FUEL SYSTEM 1/1 LEAN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .552P0174-FUEL SYSTEM 2/1 LEAN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .552P0172-FUEL SYSTEM 1/1 RICH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .558P0175-FUEL SYSTEM 2/1 RICH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .558P0201-FUEL INJECTOR #1 CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .563P0202-FUEL INJECTOR #2 CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .563P0203-FUEL INJECTOR #3 CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .563P0204-FUEL INJECTOR #4 CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .563P0205-FUEL INJECTOR #5 CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .563P0206-FUEL INJECTOR #6 CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .563P0207-FUEL INJECTOR #7 CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .563P0208-FUEL INJECTOR #8 CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .563P0222-THROTTLE POSITION SENSOR #2 LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . .567P0223-THROTTLE POSITION SENSOR #2 HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . .570P0300-MULTIPLE CYLINDER MISFIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .572P0301-CYLINDER #1 MISFIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .572P0302-CYLINDER #2 MISFIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .572P0303-CYLINDER #3 MISFIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .572P0304-CYLINDER #4 MISFIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .572P0305-CYLINDER #5 MISFIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .572P0306-CYLINDER #6 MISFIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .572P0307-CYLINDER #7 MISFIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .572P0308-CYLINDER #8 MISFIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .572P0315-NO CRANK SENSOR LEARNED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .580P0325-KNOCK SENSOR #1 CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .582P0330-KNOCK SENSOR #2 CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .582P0335-CRANKSHAFT POSITION SENSOR CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . .585P0339-CRANKSHAFT POSITION SENSOR INTERMITTENT . . . . . . . . . . . . . . . . . . .589

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P0340-CAMSHAFT POSITION SENSOR CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . .593P0344-CAMSHAFT POSITION SENSOR INTERMITTENT . . . . . . . . . . . . . . . . . . . . .597P0351-IGNITION COIL #1 PRIMARY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .601P0352-IGNITION COIL #2 PRIMARY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .601P0353-IGNITION COIL #3 PRIMARY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .601P0354-IGNITION COIL #4 PRIMARY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .601P0355-IGNITION COIL #5 PRIMARY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .601P0356-IGNITION COIL #6 PRIMARY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .601P0357-IGNITION COIL #7 PRIMARY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .601P0358-IGNITION COIL #8 PRIMARY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .601P0420-CATALYTIC 1/1 EFFICIENCY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .605P0432-CATALYTIC 2/1 EFFICIENCY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .605P0440-GENERAL EVAP SYSTEM FAILURE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .607P0441-EVAP PURGE SYSTEM PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . .612P0442 SYSTEM MEDIUM LEAK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .614P0455-EVAP SYSTEM LARGE LEAK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .614P0443-EVAP PURGE SOLENOID CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .618P0452-NVLD PRESSURE SWITCH STUCK CLOSED. . . . . . . . . . . . . . . . . . . . . . . . .620P0453-NVLD PRESSURE SWITCH STUCK OPEN . . . . . . . . . . . . . . . . . . . . . . . . . . .623P0456-EVAP SYSTEM SMALL LEAK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .625P0461-FUEL LEVEL SENSOR #1 PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . .627P0462-FUEL LEVEL SENSOR #1 LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .629P0463-FUEL LEVEL SENSOR #1 HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .631P0480-LOW SPEED FAN CONTROL RELAY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . .633P0498-NVLD CANISTER VENT VALVE SOLENOID CIRCUIT LOW. . . . . . . . . . . . . .635P0499-NVLD CANISTER VENT VALVE SOLENOID CIRCUIT HIGH . . . . . . . . . . . . .637P0501-VEHICLE SPEED SIGNAL #1 PERFORMANCE. . . . . . . . . . . . . . . . . . . . . . . .639P0503-VEHICLE SPEED SIGNAL #1 ERRATIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .639P0506-IDLE SPEED PERFORMANCE LOWER THAN EXCEPTED . . . . . . . . . . . . . .641P0507-IDLE SPEED PERFORMANCE HIGHER THAN EXCEPTED . . . . . . . . . . . . .643P0508-IAC VALVE SIGNAL CIRCUIT LOW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .645P0509-IAC VALVE SIGNAL CIRCUIT HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .647P0513-INVALID SKIM KEY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .649P0516-BATTERY TEMPERATURE SENSOR LOW . . . . . . . . . . . . . . . . . . . . . . . . . . .651P0517-BATTERY TEMPERATURE SENSOR HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . .653P0522-OIL PRESSURE CIRCUIT LOW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .655P0523-OIL PRESSURE CIRCUIT HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .655P0532-A/C PRESSURE SENSOR LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .658P0533-A/C PRESSURE SENSOR HIGH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .660P0551-POWER STEERING SWITCH PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . .662P0562-BATTERY VOLTAGE LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .664P0563-BATTERY VOLTAGE HIGH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .667P0571-BRAKE SWITCH #1 PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .669P0572-BRAKE SWITCH #1 CIRCUIT LOW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .671P0573-BRAKE SWITCH #1 CIRCUIT HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .673P0579-SPEED CONTROL SWITCH #1 PERFORMANCE (4.7L). . . . . . . . . . . . . . . . .675P0579-SPEED CONTROL SWITCH #1 PERFORMANCE (5.7L). . . . . . . . . . . . . . . . .678P0580-SPEED CONTROL SWITCH #1 LOW (4.7L). . . . . . . . . . . . . . . . . . . . . . . . . . .681P0580-SPEED CONTROL SWITCH #1 LOW (5.7L). . . . . . . . . . . . . . . . . . . . . . . . . . .683P0581-SPEED CONTROL SWITCH #1 HIGH (4.7L) . . . . . . . . . . . . . . . . . . . . . . . . . .686P0581-SPEED CONTROL SWITCH #1 HIGH (5.7L) . . . . . . . . . . . . . . . . . . . . . . . . . .689P0582-SPEED CONTROL VACUUM SOLENOID CIRCUIT . . . . . . . . . . . . . . . . . . . . .692P0585-SPEED CONTROL SWITCH #1 AND #2 CORRELATION . . . . . . . . . . . . . . . .694

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P0586-SPEED CONTROL VENT SOLENOID CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . .698P0591-SPEED CONTROL SWITCH #2 PERFORMANCE . . . . . . . . . . . . . . . . . . . . . .700P0592-SPEED CONTROL SWITCH #2 LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .703P0593-SPEED CONTROL SWITCH #2 HIGH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .705P0594-SPEED CONTROL SERVO POWER CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . .708P0600-SERIAL COMMUNICATION LINK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .711P0601-INTERNAL MEMORY CHECKSUM INVALID. . . . . . . . . . . . . . . . . . . . . . . . . . .711P0606-ECM/PCM PROCESSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .711P0622-GENERATOR FIELD CONTROL CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . .712P0627-FUEL PUMP RELAY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .714P0630-VIN NOT PROGRAMMED IN PCM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .716P0632-ODOMETER NOT PROGRAMMED IN PCM. . . . . . . . . . . . . . . . . . . . . . . . . . .717P0633-SKIM KEY NOT PROGRAMMED IN PCM. . . . . . . . . . . . . . . . . . . . . . . . . . . . .718P0642-PRIMARY 5-VOLT SUPPLY LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .719P0643-PRIMARY 5-VOLT SUPPLY HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .721P0645-A/C CLUTCH RELAY CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .722P0652-AUXILIARY 5-VOLT SUPPLY LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .724P0653-AUXILIARY 5-VOLT SUPPLY HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .726P0685-ASD RELAY CONTROL CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .727P0688-ASD RELAY SENSE CIRCUIT LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .729P0700-TRANSMISSION CONTROL SYSTEM (MIL REQUEST) . . . . . . . . . . . . . . . . .732P0703-BRAKE SWITCH #2 PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .733P0850-PARK/NEUTRAL SWITCH PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . .736P1115-GENERAL TEMPERATURE RATIONALITY . . . . . . . . . . . . . . . . . . . . . . . . . . . .738P1501-VSS 1/2 CORRELATION - DRIVE WHEELS. . . . . . . . . . . . . . . . . . . . . . . . . . .740P1502-VSS 1/2 CORRELATION - NON DRIVE WHEELS . . . . . . . . . . . . . . . . . . . . . .740P1572-BRAKE PEDAL STUCK ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .743P1573-BRAKE PEDAL STUCK OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .745P1593-SPEED CONTROL SWITCH #1 AND #2 STUCK (5.7L). . . . . . . . . . . . . . . . . .747P1602-PCM NOT PROGRAMMED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .750P1603-PCM INTERNAL DAUL-PORT RAM COMMUNICATION . . . . . . . . . . . . . . . . .751P1604-PCM INTERNAL DAUL-PORT RAM READ/WRITE INTEGRITY FAILURE . . .751P1607-PCM INTERNAL SHUTDOWN TIMER RATIONALITY . . . . . . . . . . . . . . . . . . .751P1618-PRIMARY 5-VOLT SUPPLY ERRATIC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .753P1628-AUXILIARY 5-VOLT SUPPLY ERRATIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .756P1686-NO SKIM BUS MESSAGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .759P1687-NO CLUSTER BUS MESSAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .761P1695-NO BODY BUS MESSAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .762P1696-PCM FAILURE EEPROM WRITE DENIED . . . . . . . . . . . . . . . . . . . . . . . . . . . .764P1697-PCM FAILURE SRI MILES NOT STORED . . . . . . . . . . . . . . . . . . . . . . . . . . . .764P1698-NO BUS MESSAGE FROM TRANS CONTROL MODULE . . . . . . . . . . . . . . .766P2100-ELECTRONIC THROTTLE CONTROL MOTOR CIRCUIT . . . . . . . . . . . . . . . .768P2118-ELECTRONIC THROTTLE CONTROL MOTOR CURRENTPERFORMANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .768P2101-ELECTRONIC THROTTLE CONTROL MOTOR PERFORMANCE . . . . . . . . .772P2106-ETC SYSTEM - FORCED LIMITED POWER . . . . . . . . . . . . . . . . . . . . . . . . . .774P2107-ELECTRONIC THROTTLE CONTROL MODULE PROCESSOR. . . . . . . . . . .775P2108-ELECTRONIC THROTTLE CONTROL MODULE PERFORMANCE . . . . . . . .775P2110-ELECTRONIC THROTTLE CONTROL - FORCED LIMIT RPM . . . . . . . . . . . .776P2111-ELECTRONIC THROTTLE CONTROL - UNABLE TO CLOSE. . . . . . . . . . . . .779P2112-ELECTRONIC THROTTLE CONTROL - UNABLE TO OPEN. . . . . . . . . . . . . .782P2115-ACCELERATOR PEDAL POSITION SENSOR #1 MINIMUM STOPPERFORMANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .785

x


P2116-ACCELERATOR PEDAL POSITION SENSOR #2 MINIMUM STOPPERFORMANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .785P2166-ACCELERATOR PEDAL POSITION SENSOR #1 MAXIMUM STOPPERFORMANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .785P2167-ACCELERATOR PEDAL POSITION SENSOR #2 MAXIMUM STOPPERFORMANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .785P2122-ACCELERATOR PEDAL POSITION SENSOR # 1 LOW . . . . . . . . . . . . . . . . .787P2123-ACCELERATOR PEDAL POSITION SENSOR #1 HIGH . . . . . . . . . . . . . . . . .790P2127-ACCELERATOR PEDAL POSITION SENSOR #2 LOW. . . . . . . . . . . . . . . . . .793P2128-ACCELERATOR PEDAL POSITION SENSOR #2 HIGH . . . . . . . . . . . . . . . . .796P2138-ACCELERATOR PEDAL POSITION SENSOR #1 AND #2 VOLTAGECORRELATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .799P2161-VEHICLE SPEED SIGNAL #2 ERRATIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .801P2174-LOW AIRFLOW/RESTRICTION DETECTED (INSTANT ACCUMULATION) . .803P2175-LOW AIRFLOW/RESTRICTION DETECTED (SLOW ACCUMULATION) . . . .803P2181-COOLING SYSTEM PERFORMACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .809P2299-BRAKE SWITCH POSITION / APPS INCOMPATIBLE . . . . . . . . . . . . . . . . . . .813P2302-IGNITION COIL #1 SECONDARY CIRCUIT- INSUFFICIENT IONIZATION. . .815P2305-IGNITION COIL #2 SECONDARY CIRCUIT- INSUFFICIENT IONIZATION. . .815P2308-IGNITION COIL #3 SECONDARY CIRCUIT- INSUFFICIENT IONIZATION. . .815P2311-IGNITION COIL #4 SECONDARY CIRCUIT- INSUFFICIENT IONIZATION. . .815P2314-IGNITION COIL #5 SECONDARY CIRCUIT- INSUFFICIENT IONIZATION. . .815P2317-IGNITION COIL #6 SECONDARY CIRCUIT- INSUFFICIENT IONIZATION. . .815P2320-IGNITION COIL #7 SECONDARY CIRCUIT- INSUFFICIENT IONIZATION. . .815P2323-IGNITION COIL #8 SECONDARY CIRCUIT- INSUFFICIENT IONIZATION. . .815P2503-CHARGING SYSTEM OUTPUT LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .818*CHECKING A/C OPERATION WITH NO DTCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .821*CHECKING PCM POWERS AND GROUNDS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .824

SENTRY KEY IMMOBILIZERANTENNA FAILURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .825COP FAILURE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .825EEPROM FAILURE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .825INTERNAL FAULT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .825RAM FAILURE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .825SERIAL LINK INTERNAL FAULT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .825STACK OVERFLOW FAILURE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .825PCM STATUS FAILURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .827SERIAL LINK EXTERNAL FAULT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .827ROLLING CODE FAILURE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .829VIN MISMATCH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .829TRANSPONDER COMMUNICATION FAILURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .831TRANSPONDER CYCLIC REDUNDANCY CHECK (CRC) FAILURE . . . . . . . . . . . . .831TRANSPONDER ID MISMATCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .831TRANSPONDER RESPONSE MISMATCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .831

STARTING*5.7L INTERMITTENT NO CRANK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .834*CHECKING FUEL DELIVERY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .835*CHECKING HARD START (FUEL SYSTEM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .837*ENGINE CRANKS BUT DOES NOT START . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .839*FUEL PRESSURE LEAK DOWN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .841*NO CRANK CONDITION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .842

xi


*NO RESPONSE FROM PCM WITH A NO START CONDITION . . . . . . . . . . . . . . . .845*START AND STALL CONDITION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .849

TRANSFER CASE - ELECTRONIC12 VOLT OVER VOLTAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85112 VOLT UNDER VOLTAGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8522WD/AWD INDICATOR OPEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8542WD/AWD INDICATOR SHORT TO GROUND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8574WD HI INDICATOR OPEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8594WD HI INDICATOR SHORT TO GROUND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8614WD LO INDICATOR OPEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8634WD LO INDICATOR SHORT TO GROUND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8655 VOLT OVER VOLTAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8675 VOLT UNDER VOLTAGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .869INTERNAL ERROR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .871MISSING BRAKE INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .872MISSING ENGINE RPM INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .873MISSING IGNITION MESSAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .874MISSING LAMP DIMMING MESSAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .875MISSING SPEED DIFFERENCE MESSAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .876MISSING TRANSFER CASE TYPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .878MISSING TRANSMISSION POSITION INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .879MISSING TRANSMISSION TYPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .881MISSING VEHICLE SPEED INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .882NEUTRAL INDICATOR OPEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .884NEUTRAL INDICATOR SHORT TO GROUND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .887SELECTOR SWITCH/TRANSFER CASE - MISMATCH . . . . . . . . . . . . . . . . . . . . . . . .889TRANSFER CASE MODE SENSOR ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .893TRANSFER CASE SELECTOR SWITCH ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . .896

TRANSFER CASE - MECHANICALP0836-4WD MUX SWITCH STUCK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .899P0837-4WD MUX SWITCH PERFORMANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .902P0838-4WD MODE SENSOR LOW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .904P0839-4WD MODE SENSOR HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .906

TRANSMISSION - NGCP0122-THROTTLE POSITION SENSOR LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .908P0123-THROTTLE POSITION SENSOR HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .910P0124-THROTTLE POSITION SENSOR INTERMITTENT. . . . . . . . . . . . . . . . . . . . . .912P0218-HIGH TEMPERATURE OPERATION ACTIVATED . . . . . . . . . . . . . . . . . . . . . .915P0562-LOW BATTERY VOLTAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .917P0604-INTERNAL TCM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .922P0605-INTERNAL TCM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .923P0613-INTERNAL TCM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .924P0706-CHECK SHIFTER SIGNAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .925P0711-TRANSMISSION TEMPERATURE SENSOR PERFORMANCE. . . . . . . . . . . .934P0712-TRANSMISSION TEMPERATURE SENSOR LOW. . . . . . . . . . . . . . . . . . . . . .937P0713-TRANSMISSION TEMPERATURE SENSOR HIGH . . . . . . . . . . . . . . . . . . . . .940P0714-TRANSMISSION TEMPERATURE SENSOR INTERMITTENT . . . . . . . . . . . .944P0715-INPUT SPEED SENSOR ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .947P0720-OUTPUT SPEED SENSOR ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .952P0725-ENGINE SPEED SENSOR CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .957

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P0731-GEAR RATIO ERROR IN 1ST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .959P0732-GEAR RATIO ERROR IN 2ND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .961P0733-GEAR RATIO ERROR IN 3RD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .964P0734-GEAR RATIO ERROR IN 4TH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .967P0735-GEAR RATIO ERROR 4TH PRIME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .969P0736-GEAR RATIO ERROR IN REVERSE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .971P0740-TORQUE CONVERTER CLUTCH CONTROL CIRCUIT. . . . . . . . . . . . . . . . . .973P0750-LR SOLENOID CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .975P0755-2C SOLENOID CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .980P0760-OD SOLENOID CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .985P0765-UD SOLENOID CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .990P0770-4C SOLENOID CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .995P0841-LR PRESSURE SWITCH SENSE CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . .1000P0845-2C HYDRAULIC PRESSURE TEST FAILURE . . . . . . . . . . . . . . . . . . . . . . . .1005P0846-2C PRESSURE SWITCH SENSE CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . .1012P0868-LINE PRESSURE LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1016P0869-LINE PRESSURE HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1021P0870-OD HYDRAULIC PRESSURE TEST FAILURE . . . . . . . . . . . . . . . . . . . . . . . .1026P0871-OD PRESSURE SWITCH SENSE CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . .1033P0875-UD HYDRAULIC PRESSURE TEST FAILURE . . . . . . . . . . . . . . . . . . . . . . . .1037P0876-UD PRESSURE SWITCH SENSE CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . .1044P0884-POWER UP AT SPEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1049P0888-RELAY OUTPUT ALWAYS OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1051P0890-SWITCHED BATTERY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1056P0891-TRANSMISSION RELAY ALWAYS ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1058P0932-LINE PRESSURE SENSOR CIRCUIT FAULT. . . . . . . . . . . . . . . . . . . . . . . . .1061P0934-LINE PRESSURE SENSOR LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1064P0935-LINE PRESSURE SENSOR HIGH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1067P0944-LOSS OF PRIME. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1071P0987-4C HYDRAULIC PRESSURE TEST FAILURE . . . . . . . . . . . . . . . . . . . . . . . .1074P0988-4C PRESSURE SWITCH SENSE CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . .1081P1684-BATTERY WAS DISCONNECTED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1086P1694-BUS COMMUNICATION WITH ENGINE MODULE . . . . . . . . . . . . . . . . . . . .1088P1715-RESTRICTED PORT IN T3 RANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1090P1736-GEAR RATIO ERROR IN 2ND PRIME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1092P1775-SOLENOID SWITCH VALVE LATCHED IN TCC POSITION . . . . . . . . . . . . .1094P1776-SOLENOID SWITCH VALVE LATCHED IN LR POSITION. . . . . . . . . . . . . . .1099P1790-FAULT IMMEDIATELY AFTER SHIFT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1104P1793-TRD LINK COMMUNICATION ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1106P1794-SPEED SENSOR GROUND ERROR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1108P2700-INADEQUATE ELEMENT VOLUME LR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1111P2701-INADEQUATE ELEMENT VOLUME 2C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1113P2702-INADEQUATE ELEMENT VOLUME OD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1115P2703- INADEQUATE ELEMENT VOLUME UD . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1117P2704-INADEQUATE ELEMENT VOLUME 4C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1119P2706-MS SOLENOID CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1121*BACKUP LAMPS COME ON WHILE SHIFTER IS NOT IN REVERSE POSITION.1126*BACKUP LAMPS INOPERATIVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1127*BUMP FELT SHORTLY AFTER STOP WITH NO DTCS PRESENT . . . . . . . . . . . .1129*BUMP FELT WHILE COASTING IN NEUTRAL WITH NO DTCS PRESENT . . . . .1130*POOR SHIFT QUALITY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1131*TRANSMISSION NOISY WITH NO DTCS PRESENT . . . . . . . . . . . . . . . . . . . . . . .1132*TRANSMISSION SHIFTS EARLY WITH NO DTCS . . . . . . . . . . . . . . . . . . . . . . . . .1134

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*TRANSMISSION SHIFTS ROUGH AFTER PCM REPLACEMENT ORREFLASH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1135*TRANSMISSION SIMULATOR WILL NOT POWER UP . . . . . . . . . . . . . . . . . . . . . .1136*VEHICLE IS SLUGGISH WITH NO DTCS PRESENT . . . . . . . . . . . . . . . . . . . . . . .1137

TRANSMISSION - REP0711-TRANS TEMP SENSOR, NO TEMP RISE AFTER START. . . . . . . . . . . . . . .1139P0712-TRANS TEMP SENSOR VOLTAGE TOO LOW. . . . . . . . . . . . . . . . . . . . . . . .1142P0713-TRANS TEMP SENSOR VOLTAGE TOO HIGH . . . . . . . . . . . . . . . . . . . . . . .1147P0720-LOW OUTPUT SPEED SENSOR - RPM ABOVE 15 MPH. . . . . . . . . . . . . . .1152P0743-TORQUE CONVERTER CLUTCH SOLENOID/TRANS RELAY CIRCUITS. .1156P0748-PRESSURE SOL CONTROL/TRANS RELAY CIRCUITS . . . . . . . . . . . . . . . .1161P0751-O/D SWITCH PRESSED (LO) MORE THAN 5 MINUTES . . . . . . . . . . . . . . .1165P0753-TRANS 3-4 SHIFT SOL/TRANS RELAY CIRCUITS . . . . . . . . . . . . . . . . . . . .1167P1740-TCC O/D SOL PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1171P1756-GOV PRESS NOT EQUAL TO TARGET @ 15-20 PSI . . . . . . . . . . . . . . . . . .1176P1756-GOV PRESS NOT EQUAL TO TARGET @ 35 - 40 PSI (DIESEL) . . . . . . . .1176P1757-GOV PRESS ABOVE 3 PSI IN GEAR WITH 0 MPH . . . . . . . . . . . . . . . . . . .1183P1762-GOV PRESS SEN OFFSET VOLTS TOO LO OR HIGH . . . . . . . . . . . . . . . .1188P1763-GOVERNOR PRESSURE SENSOR VOLTS TOO HI . . . . . . . . . . . . . . . . . . .1192P1764-GOVERNOR PRESSURE SENSOR VOLTS TOO LOW. . . . . . . . . . . . . . . . .1197P1765-TRANS 12 VOLT SUPPLY RELAY CTRL CIRCUIT . . . . . . . . . . . . . . . . . . . .1200P2638-TORQUE MANAGEMENT FEEDBACK SIGNAL PERFORMANCE(DIESEL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1203

VERIFICATION TESTSVERIFICATION TESTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1206

8.0 COMPONENT LOCATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1223

8.1 CONTROL MODULES AND IPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12238.2 DATA LINK CONNECTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12238.3 SENSORS AND SOLENOIDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12238.4 FUEL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12378.5 SWITCHES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1239

9.0 CONNECTOR PINOUTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1241

4WD SWITCH (MANUAL TRANSFER CASE). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1241A/C COMPRESSOR CLUTCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1241A/C PRESSURE TRANSDUCER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1241A/C PRESSURE TRANSDUCER (DIESEL). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1241ACCELERATOR PEDAL POSITION SENSOR (5.7L/DIESEL M/T NORMALBUILD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1242AMBIENT TEMPERATURE SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1242BATTERY TEMPERATURE SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1242BRAKE LAMP SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1242BRAKE TRANSMISSION SHIFT INTERLOCK SOLENOID . . . . . . . . . . . . . . . . . . . .1243C205. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1243CAMSHAFT POSITION SENSOR (GAS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1243CAPACITOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1243CLOCKSPRING C1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1243CLOCKSPRING C3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1244CLUTCH INTERLOCK BRAKE SWITCH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1244

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COIL ON PLUG NO. 1 (3.7L/4.7L/5.7L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1244COIL ON PLUG NO. 2 (3.7L/4.7L/5.7L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1244COIL ON PLUG NO. 3 (3.7L/4.7L/5.7L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1245COIL ON PLUG NO. 4 (3.7L/4.7L/5.7L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1245COIL ON PLUG NO. 5 (3.7L/4.7L/5.7L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1245COIL ON PLUG NO. 6 (3.7L/4.7L/5.7L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1245COIL ON PLUG NO. 7 (4.7L/5.7L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1246COIL ON PLUG NO. 8 (4.7L/5.7L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1246CONDENSER FAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1246CONTROLLER ANTILOCK BRAKE C1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1246CRANKSHAFT POSITION SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1247DATA LINK CONNECTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1247DATA LINK CONNECTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1247ELECTRIC BRAKE PROVISION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1247ELECTRONIC THROTTLE CONTROL MODULE (5.7L) . . . . . . . . . . . . . . . . . . . . . .1248ENGINE COOLANT TEMPERATURE SENSOR (3.7L/4.7L/5.7L) . . . . . . . . . . . . . . .1248ENGINE COOLANT TEMPERATURE SENSOR (DIESEL) . . . . . . . . . . . . . . . . . . . .1248ENGINE OIL PRESSURE SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1248EVAP/PURGE SOLENOID (EXCEPT NGC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1249EVAP/PURGE SOLENOID (NGC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1249FUEL CONTROL ACTUATOR (DIESEL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1249FUEL HEATER (DIESEL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1249FUEL INJECTOR NO. 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1249FUEL INJECTOR NO. 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1250FUEL INJECTOR NO. 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1250FUEL INJECTOR NO. 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1250FUEL INJECTOR NO. 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1250FUEL INJECTOR NO. 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1251FUEL INJECTOR NO. 7 (4.7L/5.7L/5.9L/8.0L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1251FUEL INJECTOR NO. 8 (4.7L/5.7L/5.9L/8.0L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1251FUEL INJECTOR NO. 9 (8.0L). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1251FUEL INJECTOR NO. 10 (8.0L). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1252FUEL PUMP MODULE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1252FUEL PUMP MOTOR (DIESEL). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1252GENERATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1252GOVERNOR PRESSURE SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1252IDLE AIR CONTROL MOTOR (3.7L/5.9L/8.0L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1253IDLE AIR CONTROL MOTOR (NGC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1253IGNITION COIL (5.9L). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1253IGNITION COIL-LEFT (8.0L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1253IGNITION COIL-RIGHT (8.0L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1254IGNITION SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1254INLET AIR TEMPERATURE/ PRESSURE SENSOR (DIESEL) . . . . . . . . . . . . . . . . .1254INPUT SPEED SENSOR (3.7L/4.7L/5.7L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1255INTAKE AIR TEMPERATURE SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1255INTAKE AIR TEMPERATURE/MANIFOLD ABSOLUTE PRESSURE SENSOR(DIESEL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1255FUSES (IPM). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1257A/C COMPRESSOR CLUTCH RELAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1258AUTO SHUT DOWN RELAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1258CONDENSER FAN RELAY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1258INTEGRATED POWER MODULE (FCM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1259FUEL PUMP RELAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1260

xv


OXYGEN SENSOR DOWNSTREAM RELAY (CALIFORNIA) . . . . . . . . . . . . . . . . . .1260STARTER MOTOR RELAY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1260TRAILER TOW LEFT TURN RELAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1260TRAILER TOW RIGHT TURN RELAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1260TRANSMISSION CONTROL RELAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1260INTEGRATED POWER MODULE C1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1261INTEGRATED POWER MODULE C2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1261INTEGRATED POWER MODULE C3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1262INTEGRATED POWER MODULE C4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1262INTEGRATED POWER MODULE C5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1263INTEGRATED POWER MODULE C6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1263INTEGRATED POWER MODULE C7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1264LEAK DETECTION PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1264LEAK DETECTION PUMP (NGC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1264LINE PRESSURE SENSOR (4.7L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1265MANIFOLD ABSOLUTE PRESSURE SENSOR (3.7L/4.7L/5.7L). . . . . . . . . . . . . . . .1265MANIFOLD ABSOLUTE PRESSURE SENSOR (5.9L/8.0L). . . . . . . . . . . . . . . . . . . .1265OUTPUT SPEED SENSOR (3.7L/4.7L/5.7L). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1265OUTPUT SPEED SENSOR (5.9L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1266OUTPUT SPEED SENSOR (DIESEL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1266OVERDRIVE SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1266OXYGEN SENSOR 1/1 UPSTREAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1266OXYGEN SENSOR 1/2 DOWNSTREAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1267OXYGEN SENSOR 2/1 UPSTREAM (CALIFORNIA 4.7L/CALIFORNIA 5.9L) . . . . .1267OXYGEN SENSOR 2/2 DOWNSTREAM (CALIFORNIA 4.7L/CALIFORNIA 5.9L) . .1267POWER STEERING PRESSURE SWITCH (3.7L/4.7L/5.7L) . . . . . . . . . . . . . . . . . . .1267POWERTRAIN CONTROL MODULE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1268POWERTRAIN CONTROL MODULE C1 (JTEC) . . . . . . . . . . . . . . . . . . . . . . . . . . . .1269POWERTRAIN CONTROL MODULE C1 (NGC). . . . . . . . . . . . . . . . . . . . . . . . . . . . .1270POWERTRAIN CONTROL MODULE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1271POWERTRAIN CONTROL MODULE C2 (JTEC) . . . . . . . . . . . . . . . . . . . . . . . . . . . .1272POWERTRAIN CONTROL MODULE C2 (NGC). . . . . . . . . . . . . . . . . . . . . . . . . . . . .1273POWERTRAIN CONTROL MODULE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1274POWERTRAIN CONTROL MODULE C3 (JTEC) . . . . . . . . . . . . . . . . . . . . . . . . . . . .1275POWERTRAIN CONTROL MODULE C3 (NGC). . . . . . . . . . . . . . . . . . . . . . . . . . . . .1276POWERTRAIN CONTROL MODULE C4 (NGC). . . . . . . . . . . . . . . . . . . . . . . . . . . . .1277SENTRY KEY IMMOBILIZER MODULE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1277SPEED CONTROL SERVO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1278SPEED CONTROL SWITCH-LEFT (ETC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1278SPEED CONTROL SWITCH-LEFT (EXCEPT ETC) . . . . . . . . . . . . . . . . . . . . . . . . . .1278SPEED CONTROL SWITCH-RIGHT (ETC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1278SPEED CONTROL SWITCH-RIGHT (EXCEPT ETC). . . . . . . . . . . . . . . . . . . . . . . . .1278TAIL/STOP/TURN SIGNAL LAMP-LEFT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1279TAIL/STOP/TURN SIGNAL LAMP-RIGHT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1279THROTTLE POSITION SENSOR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1279THROTTLE POSITION SENSOR (DIESEL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1279TRAILER TOW CONNECTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1280TRAILER TOW CONNECTOR-ADD ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1280TRANSMISSION RANGE SENSOR (5.9L/DIESEL) . . . . . . . . . . . . . . . . . . . . . . . . . .1280TRANSMISSION SOLENOID ASSEMBLY (5.9L/8.0L) . . . . . . . . . . . . . . . . . . . . . . . .1280TRANSMISSION SOLENOID/TRS ASSEMBLY (3.7L/4.7L/5.7L) . . . . . . . . . . . . . . . .1281

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10.0 SCHEMATIC DIAGRAMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1283

10.1 3.7L FEDERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128310.2 3.7L CALIFORNIA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128410.3 4.7L NGCI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128510.4 5.7L NGCII . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128610.5 5.9L FEDERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128710.6 5.9L CALIFORNIA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128810.7 8.0L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128910.8 5.9L DIESEL AUTOMATIC (EARLY). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129010.9 5.9L DIESEL MANUAL TRANS (EARLY). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129110.10 5.9L DIESEL MANUAL TRANS (LATE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129210.11 5.9L DIESEL AUTOMATIC (LATE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129310.12 45/545 RFE TRANSMISSION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1294

11.0 CHARTS AND GRAPHS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1295

11.1 ENGINE VACUUM READINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129511.2 O2 SENSOR CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129611.3 NGC CAM AND CRANK PATTERNS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129711.4 3.7L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129711.5 5.9L GAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129811.6 8.0L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129811.7 PRESSURE SWITCH STATES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129911.8 SHIFT LEVER ERROR CODES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129911.9 TRS SWITCH STATES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130011.10 5.7L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130011.11 5.7L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130111.12 EELD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1301

xvii

NOTES

xviii

ImportantNew for the 2003 DR, the Powertrain Control Module and Transmission Control Module have

been combined into single control module on vehicles equipped with a 4.7L. This new module isthe Next Generation Controller (NGC1). Also new for 2003 DR is 5.7L engine which uses the NextGeneration Control Module 2 (NGC2). The NGC2 controller removes RFE transmission controlsystem and installs Electronic Throttle Control (ETC) module system. ETC utilizes a newelectronically controlled Throttle Body with two new TP Sensors and Accelerator PedalPosition Sensors to control throttle opening. These new control modules for DaimlerChryslerwill be referred to as the Powertrain Control Module (PCM). For 3.7L/5.7L engines, thetransmission control module is a separate controller (EATX). On 5.9L gas and 8.0L gas enginesthe Powertrain Control Module utilizes the JTEC module which includes RE transmissioncontrol information. Also new for 2003 5.9L Electronic fuel Injection 24valve Turbo Diesel witha new Engine control module (ECM) CM845. New Diagnostics procedures and New DTCnumbers are two of the changes you will see which reflect the new combined module technology.The NGC modules will have four color coded connectors C1 (A) through C4 (C), (C1-BLK,C2-GRAY, C3-WHITE, C4-GREEN). Each PCM connector has 38 pins. Two new tools wereintroduced to help diagnose and repair the new PCM (NGC) terminals and harness connectors.The Miller #3638 terminal removal pick must be used to release the connector terminals, orharness and connector damage will occur. Also, the Miller #8815 Pinout Box was introduced. Youmust use the Miller #8815 tool instead of probing the PCM terminals, or harness and connectordamage will occur. There are new Verification tests and module replacement procedures for thenew PCM.

1.0 INTRODUCTION

The procedures contained in this manual includespecifications, instructions, and graphics needed todiagnose the PCM/ECM Powertrain System. Thediagnostics in this manual are based on thefailure condition or symptom being present atthe time of diagnosis. New for the 2003 JTECand NGC engine diagnostics, once a compo-nent has been disconnected or the state of theignition switch has been changed during adiagnostic procedure, it will remain that wayfor the entire test or until you are advisedotherwise.

Please follow the recommendations below whenchoosing your diagnostic path.1. First make sure the DRBIIIt is communicating

with the appropriate modules; i.e., if theDRBIIIt displays a No Response condition, youmust diagnose this first before proceeding.

2. Read DTCs (diagnostic trouble codes) with theDRBIIIt.

3. If no DTCs are present, identify the customercomplaint.

4. Once the DTC or customer complaint is identi-fied, locate the matching test in the Table ofContents and begin to diagnose the symptom.

All component location views are in Section 8.0.All connector pinouts are in Section 9.0. All systemschematic diagrams are in Section 10.0. All chartsand graphs are in section 11.0.

An * placed before the symptom description indi-cates a customer complaint.

When repairs are required, refer to the appropri-ate service manual for the proper removal andrepair procedure.

Diagnostic procedures change every year. Newdiagnostic systems may be added; current systemsmay be enhanced. READ THIS MANUAL BEFORETRYING TO DIAGNOSE A VEHICLE DTC. It isrecommended that you review the entire manual tobecome familiar with all new and enhanced diag-nostic procedures.

After using this book, if you have any commentsor recommendations, please fill out the form at theback of the book and mail it back to us.

1.1 SYSTEM COVERAGE

This diagnostic procedure manual covers Power-train and NGC1 or RE controlled Transmissiondiagnostics for the 2003 Dodge Truck (DR) vehiclesequipped with JTEC, Next Generation ControlModule 1(NGC1) and, Next Generation ControlModule 2 (NGC2). Also including diagnostics for theCummins (CM845) 24-valve turbo diesel enginewith electronic Fuel Injection (ECM).

1.2 SIX-STEP TROUBLE SHOOTINGPROCEDURE

Diagnosis of the Powertrain/Engine Control Mod-ule (PCM)/(ECM) is done in six basic steps: verification of complaint verification of any related symptoms symptom analysis problem isolation

1

GENERAL INFORMATION

repair of isolated problem verification of proper operation

2.0 IDENTIFICATION OFSYSTEM

The Powertrain/Engine Control Module (PCM)/(ECM) monitors and controls: fuel system ignition system charging system speed control system The NGC2 module is only used on trucks with a

5.7L engine. The NGC1 module is only used on trucks with a

4.7L engine and an automatic transmission. The JTEC module is used on trucks with a 3.7L,

5.9L gas and, 8.0L. Cummins CM845 24Valve electronic fuel injec-

tion 5.9L Turbo Diesel engine. The 45RFE/545RFE transmission uses a stand

alone EATX module for the 3.7L and 5.7L engines The 45RFE/545RFE transmission is used with

4.7L engine The RE transmission is used with 5.9L and 8.0L

engines

3.0 SYSTEM DESCRIPTION ANDFUNCTIONAL OPERATION

3.1 GENERAL DESCRIPTION

POWERTRAINThe on-board OBDII diagnostics incorporated

with the PCM are intended to assist the fieldtechnician in repairing vehicle problems by thequickest means.

ELECTRONIC THROTTLE CONTROL5.7L engines are equipped with a NGCII control

module, which controls the Throttle Plate Position,based on torque management (request). This sys-tem has a throttle cable that is attach

Documents

TABLE OF CONTENTS - autocats.wsautocats.ws/manual/dodge/dr/15835-drpw_sgmldiag.pdf · 4.2.2 vehicle preparation for testing ... *no response from pcm (pci bus) - diesel only ... table