Stratus airbags

�AIR BAG RESTRAINT SYSTEM - EXCEPT COUPE

�1996 Dodge Stratus

1996 ACCESSORIES/SAFETY EQUIPMENT Chrysler Corp. & Mitsubishi Air Bag Restraint System

Chrysler Corp.; Cirrus & Sebring Convertible Dodge; Stratus Plymouth; Breeze

* PLEASE READ THIS FIRST *

WARNING: To avoid injury from accidental air bag deployment, read and carefully follow all WARNINGS and SERVICE PRECAUTIONS.

DESCRIPTION & OPERATION

The Supplemental Restraint System (SRS) is designed to workin conjunction with seat belts. SRS is a dual system consisting ofdriver-side and passenger-side air bags. SRS provides increasedaccident protection for driver and front passenger by deploying airbags in a front-end collision. The air bag(s) deploy in about 1/10thof a second after front impact sensors close. System consists of an AIR BAG warning light, clockspring,driver-side air bag module, passenger-side air bag module and air bagcontrol module (ACM) containing an impact sensor. See Fig. 1. The ACM monitors system, stores fault codes (messages), andprovides information to AIR BAG warning light and ACM data linkconnector. A fault code is stored when AIR BAG warning light isactivated for more than 10 seconds. An impact sensor is located inside of ACM. Impact sensor isan accelerometer that senses deceleration. When an impact is severeenough to require air bag protection, deceleration pulses are sent toa microprocessor located within the ACM. The ACM then sends a signalthat completes the electrical circuit through driver and passenger-side air bags. This causes inflators to be actuated, producing a largequantity of nitrogen gas and inflating air bags.

Fig. 1: Locating Restraint System ComponentsCourtesy of Chrysler Corp.

AIR BAG WARNING LIGHT

Whenever ignition switch is in RUN or START position, AIR BAGwarning light on instrument panel will glow for 6-8 seconds and thenturn off. This signifies ACM has performed a system self-check andfound SRS to be functioning properly. If AIR BAG warning light glowsfor 10 seconds or more, stays on at all times, or does not come on, asystem malfunction exists.

AIR BAG MODULES

The driver-side air bag module is mounted on front face ofsteering wheel. The passenger-side air bag module is located above theglove box and is mounted to instrument panel. On both air bag modules,the module’s inflator assembly produces nitrogen gas to fill air bag.When a small amount of current from ACM is applied, initiator assemblystarts a thermal reaction that spreads an ignitor charge. Surrounding ignitor charge, is a pellet-filled canister,which produces nitrogen gas. Gas pressure builds and discharges frominflator through a diffuser and screen assembly, forcing steeringwheel cover and instrument panel cover to burst along their seamsuntil air bags are fully inflated. Once air bags are fully inflated,gas escapes through vents located on back of bag.

AIR BAG CONTROL MODULE (ACM)

ACM is located under center console, between gear shifter andemergency brake lever. An impact sensor (safing sensor) is an integralpart of ACM. The ACM monitors critical input and output circuitswithin air bag system, ensuring they are operating correctly. Somecircuits are tested continuously; others are checked only undercertain conditions. The ACM provides information about air bag systemthrough AIR BAG warning light and ACM data link connector. A faultcode (message) is stored whenever AIR BAG warning light stays on for12 seconds or more. ACM contains a capacitor which acts as a back-up powersupply. In the event that battery power is lost during a front endcollision, back-up power supply is able to deploy air bags for up to 2minutes after disconnection.

ACM DATA LINK CONNECTOR

ACM data link connector (also known as DRB connector) islocated under lower left side of instrument panel. Data link connectoris used to access SRS on-board diagnostics.

CLOCKSPRING

Clockspring connects air bag module to steering columnwiring, completing SRS circuit. Inside clockspring is a flat, ribbon-like tape of conductive material, which winds and unwinds withsteering wheel movement. Clockspring is most fragile part of air bagsystem. Clockspring must be centered properly to allow 2 1/2 steeringwheel turns in either direction. Failure to align clockspring properlymay cause binding or premature clockspring failure.

SHORTING BAR

Shorting bar is a device internal to initiator’s (squib)connectors that automatically shorts squib terminals when connector isdisconnected.

SYSTEM OPERATION CHECK

CAUTION: When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES in GENERAL INFORMATION before disconnecting battery.

NOTE: For DRB usage, see ENTERING ON-BOARD DIAGNOSTICS under DIAGNOSIS & TESTING.

1) Disconnect negative battery cable, and tape cable end.Connect DRB to ACM data link connector. ACM data link connector islocated under lower left side of instrument panel. Install latestversion of proper DRB cartridge. 2) Turn ignition on. Exit vehicle with DRB. After ensuring noone is inside vehicle, reconnect negative battery cable. 3) Using DRB, read and record active fault codes. Read andrecord any stored fault codes. Erase stored fault codes if there areno active fault codes. If problem remains, fault codes will not erase.Turn ignition off. 4) Turn ignition on again and observe AIR BAG warning light.AIR BAG warning light should come on for 6-8 seconds, then go out,indicating system is functioning properly. If AIR BAG warning lighteither fails to illuminate, or comes on and stays on, a systemmalfunction exists. Perform self-diagnostics. See DIAGNOSIS & TESTING.

SERVICE PRECAUTIONS

These precautions should be observed when working with airbag systems:

* Disable air bag system before servicing any air bag system or steering column component. Failure to do this could result in accidental air bag deployment and possible personal injury. See DISABLING & ACTIVATING AIR BAG SYSTEM. * Back-up power supply maintains deployment voltage for about 2 minutes after battery is disconnected. When disabling air bag system, always wait at least 2 minutes after disconnecting battery cables to resume procedure. * After repairs, ensure AIR BAG warning light works properly and no system faults are indicated. See SYSTEM OPERATION CHECK. * Always wear safety glasses when servicing or handling an air bag. * All SRS component fasteners are specially coated and are designed with a specific function. Never replace SRS component fasteners with other than original equipment parts. * Air bag module must be stored in its original special container until used for service. It must be stored in a clean, dry, place, away from sources of extreme heat, sparks and high electrical energy. * When placing a live air bag on a bench or other surface, always face air bag and trim cover up, away from surface. This will reduce motion of module if accidentally deployed. * After deployment, air bag surface may contain deposits of sodium hydroxide, which irritates skin. Always wear safety glasses, rubber gloves, and long-sleeved shirt during clean-up and wash hands using mild soap and water. Follow correct disposal procedures. See DISPOSAL PROCEDURES. * Because of critical system operating requirements, DO NOT attempt to service any air bag components. Corrections are only made by replacing defective part.

* Electrical sources should never be allowed near inflator on back of air bag module. * When carrying a live air bag module, trim cover should be pointed away from your body to minimize injury in case of deployment. * When testing voltage or continuity at Air Bag Control Module (ACM), use wire side (not terminal end) of connector. * DO NOT probe a wire through insulator, as this will damage it and eventually cause failure. * Replace clockspring whenever driver-side air bag deploys. * When performing electrical tests, prevent accidental shorting of terminals. Such shorts can damage fuses or components and may cause a second fault code to set, making diagnosis of original problem more difficult. * When diagnosing air bag system, use DRB volt/ohm meter unless instructed to use an external volt/ohm meter. NEVER use an analog volt/ohm meter or test light in place of a digital volt/ohm meter. * When using DRB to diagnose an air bag system problem, operate DRB from outside of vehicle. DO NOT sit inside of vehicle. * Never use an ohm meter to measure resistance of air bag module. Accidental air bag deployment may occur, causing personal injury. * If air bag system is not fully functional for any reason, vehicle should not be driven until system is repaired and again becomes operational. DO NOT remove bulbs, modules, sensors, or other components or in any way disable system from operating normally. If air bag system is not functional, park vehicle until it is repaired and functions properly. * When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES in GENERAL INFORMATION before disconnecting battery.

DISABLING & ACTIVATING AIR BAG SYSTEM

WARNING: Wait at least 2 minutes after disconnecting negative battery cable before servicing air bag system. System reserve capacitor, integral to ACM, maintains air bag system voltage for about 2 minutes after battery is disconnected. Servicing air bag system before 2 minutes may cause accidental air bag deployment and possible personal injury.


1) To disable air bag system for repairs, ensure ignitionswitch is in OFF position. Disconnect negative battery cable andinsulate cable end with electrical tape. Wait at least 2 minutes afterdisconnecting negative battery cable before servicing air bag system. 2) To activate air bag system, reconnect negative batterycable. Turn ignition on. Observe AIR BAG warning light. Warning lightshould come on for 6-8 seconds and then go out, indicating system isfunctioning properly. If warning light fails to glow or glows andstays on, a system malfunction exists. See SYSTEM OPERATION CHECK.

DISPOSAL PROCEDURES

DEPLOYED AIR BAG

WARNING: Vehicle interior will contain sodium hydroxide powder, a by-product of air bag deployment. Since this powder can irritate skin, eyes, nose, or throat, be sure to wear safety glasses, rubber gloves, and long-sleeved shirt during clean-up.

1) Take measures to avoid breathing powder produced duringair bag deployment. Place a piece of tape over air bag vent hole toprevent additional powder spillage. Remove driver-side air bag moduleand passenger-side air bag module (if equipped). Use vacuum cleaner toremove residual powder from A/C-heater outlets and vehicle interior. 2) Turn the blower motor to low for a few minutes and exitthe vehicle. Turn blower off. Vacuum any other powder expelled fromthe plenum. Vacuum interior a second time to recover all powder. Avoidkneeling or sitting on uncleaned surfaces. Dispose of deployed airbags as any other part.

POST-COLLISION INSPECTION

When a vehicle has been involved in a collision, certaincomponents of the passive restraint system must be inspected orreplaced. See PASSIVE RESTRAINT SYSTEM INSPECTION article in theGENERAL INFORMATION section for post-collision inspection information.

REMOVAL & INSTALLATION


WARNING: Failure to follow air bag service precautions may result in air bag deployment and personal injury. See SERVICE PRECAUTIONS. After component replacement, ensure proper system operation. See SYSTEM OPERATION CHECK.


CLOCKSPRING

WARNING: If air bag(s) have deployed, vehicle interior will contain sodium hydroxide powder, a by-product of air bag deployment. Since this powder can irritate skin, eyes, nose, and throat, wear safety glasses, rubber gloves, and long-sleeved shirt during clean-up. See DEPLOYED AIR BAG under DISPOSAL PROCEDURES.

Removal 1) If replacing a deployed air bag, clockspring must bereplaced. Before proceeding, see SERVICE PRECAUTIONS. Disableair bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM. 2) Position wheels in straight-ahead position. Clockspring islocated behind steering wheel. See Fig. 2 and 3. Remove leftinstrument panel end cover. Remove instrument panel center bezel andhood. Remove knee bolster.

Fig. 2: Identifying ClockspringCourtesy of Chrysler Corp.

Fig. 3: Removing Driver-Side Air Bag Module (Typical) Courtesy of Chrysler Corp.

3) Remove upper and lower steering column shrouds. Removedriver-side air bag module and steering wheel. See

DRIVER-SIDE AIR BAG MODULE & STEERING WHEEL. Disconnect clockspringconnectors. 4) Remove multi-function switch. Disconnect natural 3-way andYellow 2-way connectors from back side of clockspring. Liftclockspring locking tab to remove clockspring assembly from steeringshaft. Clockspring cannot be repaired and must be replaced if faulty.

Installation 1) Ensure steering wheel and road wheels are in the straightahead position. Install multi-function switch. Position clockspringonto steering shaft and push down on rotor until clockspring is fullyseated on steering column. 2) If clockspring centering adjustment is disturbed, adjustclockspring. See CLOCKSPRING CENTERING under ADJUSTMENTS beforeinstalling steering wheel. 3) Connect clockspring wiring connectors. Ensure wiring isrouted properly. Install steering column shrouds. Install steeringwheel, ensuring flats on steering wheel hub align with formations oninside of clockspring. 4) Connect horn and speed control wires, and install speedcontrol switches. Connect air bag wire (squib wire) to air bag module.Install air bag module. 5) Tighten air bag module screws to specification. DO NOTconnect negative battery cable yet. Perform system operation check toensure air bag system is functioning properly. SeeSYSTEM OPERATION CHECK.

DRIVER-SIDE AIR BAG MODULE & STEERING WHEEL

WARNING: If air bag has deployed, vehicle interior will contain sodium hydroxide powder, a by-product of air bag deployment. Since this powder can irritate skin, eyes, nose and throat, wear safety glasses, rubber gloves and long-sleeved shirt during clean-up. See DEPLOYED AIR BAG under DISPOSAL PROCEDURES.

NOTE: Clockspring must be replaced whenever replacing a deployed driver-side air bag. See CLOCKSPRING under REMOVAL & INSTALLATION.

Removal 1) Before proceeding, see SERVICE PRECAUTIONS. Disableair bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM. 2) Driver-side air bag module is mounted on face of steeringwheel. See Fig. 3. Position wheels in straight ahead position. Removecruise control switches (if equipped) and covers from steering wheelback shroud, and disconnect wires. 3) Remove air bag module retaining bolts/nuts from rear ofsteering wheel. Lift air bag module from steering wheel, anddisconnect electrical wire by lifting secondary latch anddisconnecting connector from module. Remove air bag module. Removespeed control switch screws from back of steering wheel. Pull pods outand disconnect wires. Disconnect horn wire. Using Puller (C3428B),remove steering wheel.

Installation 1) If replacing a deployed air bag module, replaceclockspring. See CLOCKSPRING under REMOVAL & INSTALLATION.Position steering wheel on steering column. Ensure flats on steeringwheel hub fit formations on inside of clockspring. 2) To install, reverse removal procedure. Ensure wires do notget pinched under steering wheel. Tighten all fasteners tospecifications. See TORQUE SPECIFICATIONS.

AIR BAG CONTROL MODULE (ACM)

WARNING: ACM contains safing sensor, which enables SRS to activate air bag. To prevent air bag deployment, DO NOT connect ACM electrically to system if vehicle battery is connected.

Removal 1) Before proceeding, follow air bag service precautions.See SERVICE PRECAUTIONS. Disable air bag system.See DISABLING & ACTIVATING AIR BAG SYSTEM. 2) ACM is located under center console, between gear shifterand emergency brake lever. On vehicles equipped with a manualtransmission, remove the shifter knob and boot. 3) Remove 4 console attaching screws. Remove 4 floor shiftermounting nuts and remove center console. See Fig. 4.

Fig. 4: Removing ACMCourtesy of Chrysler Corp.

4) Disconnect ACM connectors. Remove ACM mounting nuts, andremove ACM from vehicle.

Installation 1) Install ACM with arrow pointing toward front of vehicle.Install module screws, and tighten to specification. SeeTORQUE SPECIFICATIONS. Connect electrical connectors. 2) To complete installation, reverse removal procedure. DONOT connect negative battery cable at this time. Perform systemoperation check to ensure system is functioning properly. SeeSYSTEM OPERATION CHECK.

PASSENGER-SIDE AIR BAG MODULE

WARNING: If air bag has deployed, vehicle interior will contain sodium hydroxide powder, a by-product of air bag deployment. Since this powder can irritate skin, eyes, nose, and throat, wear safety glasses, rubber gloves, and long-sleeved shirt during clean-up. See DEPLOYED AIR BAG under DISPOSAL PROCEDURES.

Removal (Non-Deployed Module) 1) Before proceeding, see SERVICE PRECAUTIONS.Disable air bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM. 2) Passenger-side air bag module is located above glove boxand is mounted to instrument panel retainer. 3) Open glove box and push sides inward to allow door tofully open. Working through glove box opening, disconnect air bagmodule and remove 4 nuts and 2 screws retaining module. See Fig. 5.

Fig. 5: Removing Passenger-Side Air Bag ModuleCourtesy of Chrysler Corp.

Installation (Non-Deployed Module) To install, reverse removal procedure. DO NOT connect

negative battery cable at this time. Ensure system is functioningproperly. See SYSTEM OPERATION CHECK.

Removal (Deployed Module) 1) Before proceeding, see SERVICE PRECAUTIONS.Disable air bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM. 2) Passenger-side air bag module is located above glove boxand is mounted to instrument panel retainer. 3) Take measures to avoid breathing powder, produced duringair bag deployment. Place a piece of tape over air bag vent hole toprevent additional powder spillage. Use vacuum cleaner to removeresidual powder from A/C-heater outlets and vehicle interior. 4) Turn blower motor to low for a few minutes and exitvehicle. Turn blower off. Vacuum any other powder expelled fromplenum. Vacuum interior a second time to recover all powder. Avoidkneeling or sitting on uncleaned surfaces. 5) Open glove box, and push sides inward to allow door tofully open. Working through glove box opening, disconnect air bagmodule and remove 6 module retainers.

ADJUSTMENTS

CLOCKSPRING CENTERING

CAUTION: If rotating part of clockspring is not positioned properly with steering column and front wheels, clockspring failure may result. Use following procedure to center clockspring.

1) Before proceeding, see SERVICE PRECAUTIONS.Disable air bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM. 2) With steering wheel removed, depress 2 locking pins onclockspring. Rotate clockspring until Yellow appears in the centeringwindow. See Fig. 2. If clockspring is properly centered, arrow onrotor will point to centering window. Release locking pins. 3) DO NOT connect negative battery cable at this time.Perform system operation check to ensure system is functioningproperly. See SYSTEM OPERATION CHECK.

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS TABLE��

Application Ft. Lbs. (N.m)

Steering Wheel Nut ............................... 45 (61)

INCH Lbs. (N.m)

Air Bag Control Module Screws/Nuts ....... 125-170 (14-19)Driver-Side Air Bag Module Screws ........... 80-90 (9-10)Passenger-Side Air Bag Module Nuts .............. 100 (11)Passenger-Side Air Bag Module Screws .............. 20 (2)��

DIAGNOSIS & TESTING


WARNING: Always follow air bag service precautions to avoid air bag deployment and possible personal injury. See

SERVICE PRECAUTIONS. After component replacement, ensure proper system operation. See SYSTEM OPERATION CHECK.


NOTE: Although other readout boxes are available, manufacturer recommends using Diagnostic Readout Box (DRB) tester to access SRS on-board diagnostics. Following diagnosis and testing procedures are designed for use with DRB.

SELF-DIAGNOSTIC SYSTEM

SRS is monitored by Air Bag Control Module (ACM). ACMcontains safing sensor, an integral sensor in circuitry of system,which is used to fire air bag modules. ACM monitors critical input and output circuits within airbag system, ensuring they operate correctly. Some circuits are testedcontinuously; others are checked under certain circumstances. ACMprovides information about air bag system, through AIR BAG warninglight and DRB. Each circuit monitored by ACM has a corresponding faultcode (message) assigned to it. For a description of fault codes, seeDIAGNOSTIC FAULT CODES (MESSAGES).

Active Codes Active codes are hard codes and are accessed through DRB. Ifa malfunction is detected, AIR BAG warning light remains on untilservice is performed. Active fault codes are stored in ACM memoryafter ignition switch is cycled. Active fault messages automaticallyerase when fault is corrected.

Stored Codes Stored codes are intermittent codes and are accessed throughDRB. If code is intermittent, AIR BAG warning light glows for 12seconds or more and then goes out. Intermittent fault codes are storedin ACM memory, along with number of times code was active and numberof key cycles fault was in memory. Minimum time stored for any code isone minute. Stored codes will not automatically erase. DRB is requiredto erase codes.

Erase Stored Codes Erase stored codes feature is also useful as a diagnostictool. It is impossible to erase a stored code until cause of code iscorrected.

Intermittent Codes If fault code is intermittent and malfunction is not present,problem may not be located while performing diagnostic tests. In thiscase, stored code can only suggest an area to inspect. If SAFINGSENSOR OPEN, SAFING SENSOR SHORT, INTERNAL DIAGNOSTIC #1, #2, #3, or#4, LOW STORED ENERGY PASSENGER or LOW STORED ENERGY DRIVER faultcodes set intermittently, ACM should be replaced. If any other intermittent codes set, check for loose orcorroded connections, damaged components, and damaged wiring. If noobvious problems are found, erase stored codes. With ignition on,wiggle wiring harness and connectors. Recheck for codes periodicallyas you work through system. This procedure may uncover a difficultproblem to locate.

PRETEST INSPECTION & DIAGNOSTIC PROCEDURE

Following precautions and procedures must be followed:

* Always follow air bag service precautions to avoid air bag deployment and possible personal injury. See SERVICE PRECAUTIONS. * After component replacement, ensure proper system operation. See SYSTEM OPERATION CHECK. * When testing voltage or continuity at ACM, use terminal side (not wire end) of connector. DO NOT probe wire through insulation. * Always check if any TECH SERVICE BULLETINS (TSBs) apply to vehicle. * When using diagnostic charts, DO NOT skip any steps in chart or incorrect diagnosis may result. Always start at TEST 1A - TESTING SYSTEM FUNCTION. Starting with any other test may result in incorrect diagnosis. Always perform TEST VER-1 - VERIFICATION TEST after repairs are made. For a description of fault codes, see DIAGNOSTIC FAULT CODES (MESSAGES). * Always use most current diagnostic program cartridge available to prevent erroneous codes or test results. * When using diagnostic charts, use DRB volt meter unless instructed to use an external volt meter. Never use a test light in place of a volt meter. * When performing electrical tests, prevent accidental shorting of terminals. Such shorts can damage fuses or components and may cause a second code to be set, making diagnosis of original problem more difficult. * Vehicle must have a fully-charged battery and functional charging system. * Each time a connector is disconnected, inspect it to ensure it is in good condition. Always focus on circuit being tested. Dirt, water and corrosion, are most common problems in connectors. * Always disconnect DRB after use. * Always disconnect DRB before charging battery.

DRB KEYPAD FUNCTIONS

YES Or DOWN Arrow & NO Or UP Arrow Keys Keys will move lines on screen up or down, allowingtechnician to choose an item or scroll through all selectionsavailable.

F1 & F2 Keys Used to scroll through sensor displays.

ATM Key Returns technician to previous screen.

ENTER Key Allows technician to select a test or display. Flashing arrowmust be on desired display. Pressing ENTER key in sensor state willchange display from a 3-line display to a 1-line display.

F3 Key Displays a help screen and may be used at any time.

Number Keys Allows technician to choose a display or test by numbercorresponding to test or display.

READ/HOLD Key Freezes any sensor display.

MODE & ATM Keys Pressing MODE and ATM keys at same time causes DRB to resetto copyright screen.

ENTERING ON-BOARD DIAGNOSTICS

1) Before entering on-board diagnostics, refer toPRETEST INSPECTION & DIAGNOSTIC PROCEDURE. Turn ignition off. Attachmost current DRB cartridge. DRB cartridge has ability to check itselfand DRB. It provides a volt/ohm meter and performs any test requiredby air bag system diagnostics. 2) Connect DRB to ACM data link connector. See Fig. 6. ACMdata link connector (also known as DRB connector) is located underlower left side of instrument panel. Ensure all accessories are off.Turn ignition on. All character positions will glow, and copyrightinformation will appear on screen for a few seconds. Display will thenchange to DRB menu. 3) If DRB displays error message, see DRB ERROR MESSAGES.Following modes are accessible from DRB menu: VEHICLES TESTED, HOW TOUSE, CONFIGURE and SELECT SYSTEM.

Fig. 6: Locating DLC To Connect DRBCourtesy of Chrysler Corp.

VEHICLES TESTED Mode Press "1" or ENTER key when VEHICLES TESTED appears on DRB

display. DRB shows vehicles supported by cartridge used. This screenwill be displayed for 5 seconds, then DRB menu will return. To returnto DRB menu sooner, press ATM key.

HOW TO USE Mode Press "2" or DOWN arrow key to display HOW TO USE option.Press ENTER key. DRB will display instructions for use of DRB withcartridge being used.

CONFIGURE Mode Press "3" key or ENTER key when CONFIGURE appears on DRBdisplay. Configure option allows technician to customize DRB display.For example, if metric system is more useful, select METRIC fromappropriate menu. All selections made under CONFIGURE option remainactive until user changes selection.

SELECT SYSTEM Mode This option lists all vehicle systems that can be testedusing DRB. To enter air bag diagnostics, press "6" or DOWN arrow keyto display PASSIVE REST option. Press ENTER key. DRB will displayPASSIVE REST menu. At PASSIVE REST menu, press "1" key (AIR BAG) orpress ENTER key. DRB will display AIR BAG MENU.

AIR BAG Menu AIR BAG MENU displays all diagnostic modes available forvehicle selected. Following AIR BAG MENU modes can be accessed: SYSTEMTESTS, READ CODES (AIR BAG CODES), STATE DISPLAYS (AIR BAG STATE),ACTUATOR TESTS, and ADJUSTMENTS (AIR BAG ADJUSTMENTS).

SYSTEM TESTS Mode This mode is not available.

AIR BAG CODES Mode This mode allows technician to read active and stored faultcodes stored in ACM memory. It also allows stored fault codes to beerased. Follow DRB displays to erase fault codes.

AIR BAG STATE Displays Mode Only option available at AIR BAG STATE displays mode isMODULE INFO display. MODULE INFO display allows technician to read ACMpart number and application.

ACTUATOR TESTS Mode This mode is not available.

AIR BAG ADJUSTMENTS Mode This mode is not available.

NOTE: Because DRB is grounded through engine ACM data link connector, only one volt/ohm meter test lead is required when using volt/ohm meter option. DRB volt/ohm meter should only be used when diagnostic charts require use of this option.

DRB Volt/Ohm Meter Mode 1) To access volt/ohm meter mode of DRB, connect Red volt/ohmmeter test lead to Red port, located on right top side of DRB. 2) To access volt meter, press VOLT/OHM key once. DRB is nowin volt meter mode. Touch test probe to connector or wire to bemeasured. Read voltage on DRB display. When voltage testing iscomplete, press VOLT/OHM key 3 times to exit volt meter mode. 3) To access ohm meter, press VOLT/OHM key twice. DRB is nowin ohm meter mode. Touch test probe to connector or wire to be

measured. Read resistance to circuit ground on DRB display. Whenresistance testing is complete, press VOLT/OHM key twice to exit ohmmeter mode.

DRB ERROR MESSAGES

RAM TEST FAILURE Message Power up DRB again with fingers off keypad. If error messagereturns, replace DRB.

CARTRIDGE ERROR Message Power up DRB again with fingers off keypad. If error messagereturns, replace DRB cartridge.

KEY PAD TEST FAILURE Message Power up DRB again with fingers off keypad. If error messagereturns, replace DRB.

HIGH OR LOW BATTERY Message Check battery voltage. If voltage is 11.7-13.0 volts, replaceDRB. If battery voltage is low, correct condition of vehicle batteryand reconnect DRB.

DIAGNOSTIC FAULT CODES (MESSAGES)

If any of following ACM diagnostic fault codes appear,replace ACM.

* AECM ACCELEROMETER * AECM INTERNAL DIAGNOSTIC 1 * INTERNAL DIAGNOSTIC 2 * AECM OUTPUT DRIVER * AECM STORED ENERGY

If any of the following ACM diagnostic fault codes appear,perform required test procedure under DIAGNOSTIC CHARTS, starting withTEST 1A - TESTING SYSTEM FUNCTION.

* AECM & CLUSTER CCD MESSAGE MISMATCH * DRIVER-SIDE SQUIB OPEN * DRIVER-SIDE SQUIB SHORTED * DRIVER-SIDE SQUIB TERM SHORTED TO BATTERY * DRIVER-SIDE SQUIB SHORTED TO GROUND * LOSS OF IGNITION RUN ONLY * LOSS OF IGNITION RUN/START * NO CLUSTER CDD BUS MESSAGE * PASSENGER-SIDE SQUIB OPEN * PASSENGER-SIDE SQUIB SHORT * PASSENGER-SIDE SQUIB TERM SHORTED TO BATTERY * PASSENGER-SIDE SQUIB TERM SHORTED TO GROUND * WARNING LAMP CIRCUIT OPEN/SHORTED

AECM & CLUSTER CCD MESSAGE MISMATCH This code is stored as soon as condition is detected.Possible causes are malfunctioning instrument cluster ormalfunctioning ACM.

DRIVER-SIDE SQUIB OPEN This code is stored if condition is active when ignition isturned off. Possible causes are: clockspring open, driver-side air bagmodule open, or loose or poor connection at connector terminals.

DRIVER-SIDE SQUIB SHORT

This code is stored as soon as condition is detected.Possible causes are: clockspring shorted, driver-side air bag moduleshorted, or driver-side air bag line 1 shorted to line 2.

DRIVER-SIDE SQUIB SHORTED TO BATTERY This code is stored as soon as condition is detected.Possible causes are: clockspring shorted, driver-side air bag moduleshorted, driver-side air bag line 1 or 2 shorted to battery.

DRIVER-SIDE SQUIB SHORTED TO GROUND This code is stored as soon as condition is detected.Possible causes are: clockspring shorted, driver-side air bag moduleshorted, or driver-side air bag line 1 or 2 shorted to ground.

LOSS OF IGNITION RUN ONLY This is an active code only. Possible causes are: faultyfuse, open ignition feed circuit, shorted ignition feed circuit, looseor poor connection at connector terminals.

LOSS OF IGNITION RUN/START This code may set because of loose or corroded connections toACM, open ignition run/start circuit, open fuse, ignition run/startcircuit short to ground or faulty ACM.

NO CLUSTER CCD MESSAGE This code becomes active and stored as soon as condition isdetected. Possible causes are: blown fuse, faulty instrument clusteror cluster circuitry, faulty CCD bus line.

PASSENGER-SIDE SQUIB OPEN This code is stored as soon as condition is detected.Possible causes are passenger-side air bag module open or a loose orpoor connection at connector terminals.

PASSENGER-SIDE SQUIB SHORT This code is stored as soon as condition is detected.Possible causes are passenger-side air bag module shorted orpassenger-side air bag line 1 shorted to line 2.

PASSENGER-SIDE SQUIB SHORTED TO BATTERY This code is stored as soon as condition is detected.Possible causes are passenger-side air bag module shorted orpassenger-side air bag line 1 or 2 shorted to battery.

PASSENGER-SIDE SQUIB SHORTED TO GROUND This code is stored as soon as condition is detected.Possible causes are: passenger-side air bag module shorted, passenger-side air bag line 1 or 2 shorted to ground.

WARNING LAMP CIRCUIT OPEN/SHORT This code is stored as soon as condition is detected.Possible causes are: faulty lamp or bulb, faulty cluster printedcircuit, faulty instrument cluster.

DIAGNOSTIC TESTS


NOTE: Many of the diagnostic tests of the air bag restraint system require voltage or resistance checks at various system connector terminals. See Fig. 4.

Fig. 7: Air Bag Restraint System ConnectorsCourtesy of Chrysler Corp.

TEST 1A - TESTING SYSTEM FUNCTION

1) Make sure that battery is fully charged. With DRBselect "Passive Restraints" "Airbag". If DRB displays a blankscreen, go to next step. If DRB displays "No Response", performTEST 10A - PASSENGER SQUIB CIRCUIT OPEN. 2) Read active and stored codes from DRB and record them. Ifcodes INTERNAL DIAGNOSTICS 1, INTERNAL DIAGNOSTICS 2, AECMACCELEROMETER, AECM OUTPUT DRIVER, OR AECM STORED ENERGY are present,perform TEST 15A - ACM REPLACEMENT PROCEDURE. If there are activecodes, perform appropriate test. Using DRB, erase stored codes.

TEST 2A - AECM & CLUSTER CCD MESSAGE MISMATCH.

NOTE: If any other active codes are present, repair those codes before proceeding.

1) Turn ignition on, engine off. Use DRB to read status ofairbag warning lamp:

Lamp On, Cluster Off, ACM Off: Replace Cluster. Lamp On, Cluster Off, ACM On: Replace Cluster. Lamp Off, Cluster On, ACM On: Replace Cluster. Lamp Off, Cluster Off, ACM Off: Perform TEST 15A - ACM REPLACEMENT PROCEDURE. Lamp On, Cluster On, ACM Off: Perform TEST 15A - ACM REPLACEMENT PROCEDURE. Lamp On, Cluster On, ACM Off: Replace Cluster. Lamp Off, Cluster Off, ACM On: Replace Cluster. Lamp Off, Cluster On, ACM Off: Replace Cluster.

TEST 3A - DRIVER SQUIB CIRCUIT OPEN

WARNING: Disconnect battery and wait 2 minutes before proceeding.

1) Disconnect driver-side air bag module. Connect a jumperbetween driver side air bag line 1 and 2. Turn ignition on. Reconnectbattery. Use DRB to read active codes. If DRB shows DRIVER SQUIBCIRCUIT SHORTED, replace driver-side air bag module. If not, go tonext step. 2) Disconnect clockspring 2-way connector. Connect jumperbetween driver air bag line 1 and 2. Use DRB to read active codes. IfDRB shows DRIVER SQUIB CIRCUIT SHORTED, replace clockspring. If not,go to next step. 3) Disconnect battery and wait 2 minutes before proceeding.Remove jumper. Disconnect ACM 4-way connector. Use Ohmmeter to measuredriver-side air bag line 1 circuit between ACM 4-way connector andclockspring 2-way connector. If resistance is below 5.0 ohms, go tonext step. If not, repair open or high resistance in driver-sideairbag line 1 circuit. 4) Measure driver-side air bag line 2 circuit between ACM 4-way connector and clockspring 2-way connector. If resistance is above5.0 ohms, repair open or high resistance in driver-side airbag line 2circuit. If resistance is below 5.0 ohms, performTEST 15A - ACM REPLACEMENT PROCEDURE.

TEST 4A - DRIVER SQUIB CIRCUIT SHORTED


1) Disconnect driver-side air bag module. Turn ignition on.Reconnect battery. Use DRB to read active codes. If DRB shows DRIVERSQUIB CIRCUIT OPEN, replace driver-side air bag module. If not, go tonext step. 2) Disconnect clockspring 2-way connector. Use DRB to read

active codes. If DRB shows DRIVER SQUIB CIRCUIT OPEN, replaceclockspring. If not, go to next step. 3) Disconnect battery and wait 2 minutes before proceeding.Disconnect ACM 4-way connector. Turn ignition on. Reconnect battery.Use DRB to read active codes. If DRB shows DRIVER SQUIB CIRCUIT OPEN,repair driver-side air bag line 1 short to driver-side air bag line 2.

TEST 5A - DRIVER-SIDE SQUIB SHORTED TO BATTERY


1) Disconnect air bag control module 4-way connector.Disconnect driver air bag module. Turn ignition on, engine off. Usevoltmeter to measure driver-side air bag line 1 or line 2. If voltageis not above 0.5 volts on either circuit, performTEST 15A - ACM REPLACEMENT PROCEDURE. If voltage is above 0.5 volts,disconnect clockspring 2-way connector. 2) Use voltmeter to measure driver-side air bag line 1 orline 2. If voltage is not above 0.5 volts, replace clockspring. Ifvoltage is above 0.5 volts, repair driver-side air bag line 1 or line2 short to voltage.

TEST 6A - DRIVER-SIDE SQUIB TERM SHORTED TO GROUND


1) Disconnect driver-side air bag module. Turn ignition onand then reconnect battery. Use DRB to read active codes. If DRB showsDRIVER SQUIB TERM SHORTED TO GROUND, go to next step. If not, replacedriver-side air bag module. 2) Disconnect clockspring 2-way connector. Use DRB to readactive codes. If DRB shows DRIVER SQUIB TERM SHORTED TO GROUND, go tonext step. If not, replace clockspring. 3) Disconnect battery and wait 2 minutes before proceeding.Disconnect air bag control module 4-way connector. Turn ignition on,then reconnect battery. Use DRB to read active codes. If DRB showsDRIVER SQUIB TERM SHORTED TO GROUND, performTEST 15A - ACM REPLACEMENT PROCEDURE. If not, repair driver-side airbag line 1or 2 for a short to ground.

TEST 7A - LOSS OF IGNITION RUN ONLY

1) Remove and inspect fuse #16. If fuse is not good, go tostep 3). If fuse is good, use a voltmeter to measure ignition switchoutput circuit at Fuse #16. If voltage is below 10.0 volts, repairopen ignition switch output circuit. If voltage is above 10.0 volts,go to next step. 2) Reinstall fuse #16. Disconnect battery and wait 2 minutesbefore proceeding. Disconnect air bag control module 13-way connector.Turn ignition on, then reconnect battery. Use a voltmeter to measurefused ignition switch output run (CAV 2) at ACM. If voltage is above10.0 volts, perform TEST 15A - ACM REPLACEMENT PROCEDURE.If below 10.0 volts, repair open fused ignition switch output run onlycircuit. 3) Turn ignition off. Use ohmmeter to measure fused ignitionswitch output run circuit at fuse #16. If resistance is below 5.0ohms, replace fuse. If above 5.0 ohms, disconnect battery and wait 2minutes before proceeding. 4) Disconnect air bag control module 13-way connector. Turnignition on, then reconnect battery. Use ohmmeter to measure fusedignition output run circuit (CAV 2) at ACM 13-way connector. Ifresistance is below 5.0 ohms, repair fused ignition switch output

circuit for a short to ground. If resistance is below 5.0 ohms,replace fuse. Under both conditions, performTEST 15A - ACM REPLACEMENT PROCEDURE.

TEST 8A - LOSS OF IGNITION RUN/START

1) Remove and inspect fuse #17. If fuse is not good, go tostep 4). If fuse is good, go to next step. 2) Use voltmeter to measure the ignition switch outputcircuit at fuse # 17. If voltage is below 10.0 volts, repair openignition switch output circuit. If voltage is above 10.0 volts,reinstall fuse #17. Disconnect battery and wait 2 minutes beforeproceeding. 3) Disconnect air bag control module 13 ways connector. Turnignition on, then reconnect battery. Use voltmeter to measure fusedignition switch output run/start circuit (CAV 1) at air bag controlmodule connector. If voltage is below 10.0 volts, repair open fusedignition switch output run/start circuit. If above 10.0 volts, performTEST 15A - ACM REPLACEMENT PROCEDURE. 4) Turn ignition off. Disconnect battery and wait 2 minutesbefore proceeding. Disconnect air bag control module 13-way connector.Use an ohmmeter to measure the fused ignition switch output circuit(CAV 1) at ACM 13-way connector. If resistance is above 5.0 ohms,replace fuse and perform TEST 15A - ACM REPLACEMENT PROCEDURE.If resistance is below 5.0 ohms, repair fused ignition switch outputrun/start circuit for a short to ground, replace fuse and performTEST 15A - ACM REPLACEMENT PROCEDURE.

TEST 9A - NO CLUSTER CCD BUS MESSAGE

1) Turn ignition on. Observe odometer VF Display. If VFdisplays NO BUS or a blank display, perform VEHICLE COMMUNICATION TEST12A. If not, perform TEST 15A - ACM REPLACEMENT PROCEDURE.

TEST 10A - PASSENGER SQUIB CIRCUIT OPEN


1) Disconnect passenger-side air bag module. Connect jumperwire between cavity 1 and 2 of air bag module connector. Turn ignitionon, then reconnect battery. Use DRB to read active codes. If DRB showsPASSENGER SIDE SQUIB SHORT, replace passenger side air bag module. Ifnot, disconnect battery and wait 2 minutes before proceeding. 2) Disconnect air bag control module 4-way connector. Use anohmmeter to measure passenger air bag line 1 between ACM 4-way andpassenger air bag module 2-way connector. If resistance is above 5.0ohms, repair open or high resistance in passenger air bag line 1. 3) If resistance is below 5.0 ohms, measure passenger air bagline 2 between ACM 4-way and passenger-side air bag 2-way connector.If resistance is above 5.0 ohms, repair open or high resistance inpassenger-side air bag line 2. If resistance is below 5.0 ohms,perform TEST 15A - ACM REPLACEMENT PROCEDURE.

TEST 11A - PASSENGER-SIDE SQUIB CIRCUIT SHORTED


1) Disconnect passenger-side air bag module. Turn ignitionon, then reconnect battery. Use DRB to read active codes. If DRB showsPASSENGER SIDE SQUIB OPEN, replace passenger-side air bag module. Ifnot, disconnect battery and wait 2 minutes before proceeding. 2) Disconnect air bag control module 4-way connector.

Disconnect passenger-side air bag line 1 (CAV 1) at ACM 4 wayconnector. Use ohmmeter to measure resistance between passenger airbag line 1 and line 2 at passenger air bag 2-way connector. Ifresistance is above 5.0 ohms, repair passenger-side air bag line 1circuit short to line 2. If resistance is below 5.0 ohms, performTEST 15A - ACM REPLACEMENT PROCEDURE.

TEST 12A - PASSENGER-SIDE SQUIB TERM SHORTED TO BATTERY


Disconnect air bag control module 4-way connector. Disconnectpassenger-side air bag module connector. Turn ignition on, engine off.Use a voltmeter to measure passenger-side air bag line 1 or 2. Ifvoltage is above 0.5 volts, repair passenger-side air bag line 1 orline 2 short to voltage. If voltage is below 0.5 volts, performTEST 15A - ACM REPLACEMENT PROCEDURE.

TEST 13A - PASSENGER-SIDE SQUIB TERM SHORTED TO GROUND


1) Disconnect passenger-side air bag module connector. Turnon ignition, then reconnect battery. Use DRB to read active codes. IfDRB does not show PASS SQUIB SHORTED TO GROUND, replace passenger-sideair bag module. If DRB shows PASS SQUIB SHORTED TO GROUND, disconnectbattery and wait 2 minutes before proceeding. 2) Disconnect air bag control module 4-way connector. Turnignition on, then reconnect battery. Use DRB to read active codes. IfDRB does not show PASS SQUIB SHORTED TO GROUND, repair passenger-sideair bag line 1 or line 2 for a short to ground. If DRB shows PASSSQUIB SHORTED TO GROUND, perform TEST 15A - ACM REPLACEMENT PROCEDURE.

TEST 14A - WARNING LAMP CIRCUIT OPEN/SHORT

Observe air bag warning lamp. Turn ignition off and then turnignition on, engine off. If warning lamp came on, performTEST 15A - ACM REPLACEMENT PROCEDURE. If lamp did not come on,disconnect instrument cluster. Remove and inspect warning bulb. Ifwarning bulb is okay, replace circuit board. If warning lamp is notokay, replace bulb.

TEST 15A - ACM REPLACEMENT PROCEDURE


Replace air bag control module (ACM) See AIR BAG CONTROLMODULE (ACM) under REMOVAL & INSTALLATION.

WIRING DIAGRAMS

Fig. 8: SRS Wiring Diagram (Breeze, Cirrus, Sebring, Convertible,& Stratus)

Documents

Stratus airbags