2004 - RX8 - Workshop Manual - Engine · Report a problem with this article 2004 - RX8 - Workshop Manual - Engine PCM INSPECTION Not Using the WDS or Equivalent NOTE: The PCM terminal

4/26/2018 PCM Inspection • 2004 Mazda RX-8 • MotoLogic

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2004 RX-8

Report a problem with this article2004 - RX8 - Workshop Manual - EnginePCM INSPECTIONNot Using the WDS or Equivalent

NOTE:

The PCM terminal voltage can vary with conditions when measuring and changes due toage deterioration on the vehicle, causing false diagnosis. Therefore a comprehensiveinspection of the input and output systems, and the PCM is necessary to determine wherethe malfunction occurs.

PCM terminal voltage table (Reference)

TerminalSignalname

Connected to Measurement conditionVoltage

(V)Inspection item(s)

1A — — — — —

1BThrottlecontrol (+)

Throttle body(Throttle valveactuator)

(See Inspection Using AnOscilloscope (Reference).)

Throttlevalveactuator

Relatedwiringharnesses

1CThrottlecontrol (–)

Throttle body(Throttle valveactuator)

(SeeInspection Using AnOscilloscope (Reference).)

Throttlevalveactuator


1DSSVswitch

SSV switch

Idlingafterwarm-up

The SSV actuatorrod is completelypulled out.

1.0 orless

SSVswitch

RelatedwiringharnessesThe SSV actuator

rod is pulled in.B+

https://www.motologic.com/support?car=2004_rx-8



1E — — — — —

1FKnocksensor (–)

Knock sensor Under any condition1.0 orless

Knocksensor


1G Shield — — — —

1H — — — — —

1I — — — — —

1J

Throttlevalveopeningangle No.1

Throttle body(TP sensor)

Ignitionswitchat ON

When theaccelerator pedalis depressed.

3.825—

4.095TP sensor


When theaccelerator pedalis released.

0.4—0.8

1K — — — — —

1LSSVcontrol

SSV solenoidvalve

High engine speed andhigh load after warm-up

1.0 orless

SSVsolenoidvalve

RelatedwiringharnessesIdling B+

1M

Throttlevalveopeningangle No.2


Ignitionswitchat ON


4.033—

4.303TP sensor



1.18—1.78

1N — — — — —

1OAIRcontrol

AIR solenoidvalve

During the specified periodafter cold start

1.0 orless

AIRsolenoidvalve

RelatedwiringharnessesIdling after warm-up B+

1P — — — — —

1QTP sensorpowersupply


Under any conditionApprox.

5.0

TP sensor


1R — — — — —

1S APV APV motor Under any condition Approx.



positionsensorpowersupply

(APV positionsensor)

5.0 APVpositionsensor


— — — — —

1TKnocksensor (+)

Knock sensor Idling after warm-upApprox.

2.45

Knocksensor


1USensorGND

ECT sensor,rear HO2S,metering oilpump switch,APV positionsensor

Under any condition1.0 orless


1V

FrontHO2Sheatercontrol

Front HO2Sheater


FrontHO2S


1WVDIcontrol

VDI solenoidvalve

High engine speed afterwarm-up

1.0 orless

VDIsolenoidvalve


1X — — — — —

1Y — — — — —

1Z — — — — —

2A

RearHO2Sheatercontrol

Rear HO2Sheater

Idling after warm-up1.0 orless

RearHO2S

RelatedwiringharnessesHigh load B+

2BFrontHO2S

Front HO2S Idling after warm-upApprox.

2.8

FrontHO2S


2C Front Front HO2S Idling after warm-up Approx.

*3

*4



HO2S 2.4 FrontHO2S


2D

Fuelinjector(RS)control

Fuel injector(RS)


Fuelinjector


2EOilpressureswitch

Oil pressureswitch

Idling

The engine oilpressure is at thespecified or more.

B+ Oilpressureswitch


The engine oilpressure is lessthan the specified.

1.0 orless

2FTP sensorGND



TP sensor


2G

Fuelinjector(FS)control

Fuel injector(FS)


Fuelinjector


2H Shield — — — —

2IField coilcontrol

Generator (Dterminal)


Generator


2J

Fuelinjector(RP1)control

Fuel injector(RP1)


Fuelinjector


2K ECTsensor

ECT sensor Ignitionswitchat ON

ECT 0 °C {32 °F}Approx.

4.0 ECTsensor



3.1

ECT 40 °C {104°F}

Approx.2.1



ECT 60 °C {140°F}

Approx.1.4

ECT 80 °C {176°F}

Approx.0.9

ECT 100 °C {212°F}

Approx.0.5

2L — — — — —

2M

Fuelinjector(FP1)control

Fuel injector(FP1)


Fuelinjector


2NMeteringoil pumpswitch

Metering oilpump(Metering oilpump switch)

Idling

Only when themetering oil pumpis commanded tomaximum position

B+

Meteringoil pumpswitch

RelatedwiringharnessesExcept above

1.0 orless

2O

Neutralswitch

Neutral switch Idling

Neutral1.0 orless

Neutralswitch

RelatedwiringharnessesExcept above B+

— — — — —

2P

Purgesolenoidvalvecontrol

Purge solenoidvalve


Purgesolenoidvalve


2QRearHO2S

Rear HO2S Idling after warm-up0.5—1.0

RearHO2S


2ROil-levelswitch

Oil-level switchIgnitionswitchat ON

The engine oilamount is morethan the L mark onthe dipstick.

1.0 orless

Oil-levelswitch

RelatedwiringharnessesThe engine oil

amount is low.B+

2S — — — — —

*1

*2



2T Generatoroutputvoltage

Generator(Terminal P)


Generator


2U

Eccentricshaftpositionsensor (+)

Eccentric shaftposition sensor


Eccentricshaftpositionsensor


2VMeteringoil pumpcontrol 3

Metering oilpump


Meteringoil pump


2WMeteringoil pumpcontrol 1

Metering oilpump


Meteringoil pump


2X

Eccentricshaftpositionsensor (–)

Eccentric shaftposition sensor


Eccentricshaftpositionsensor


2YMeteringoil pumpcontrol 4

Metering oilpump


Meteringoil pump


2ZIgnitioncoil (L/R)control

Ignition coil(See Inspection Using AnOscilloscope (Reference).)

Ignitioncoil


2AA Ignitioncoil (L/F)control

Ignition coil (See Inspection Using AnOscilloscope (Reference).) Ignition

coil

Relatedwiring



harnesses

2ABMeteringoil pumpcontrol 2

Metering oilpump


Meteringoil pump


2ACIgnitioncoil (T/R)control


Ignitioncoil


2ADIgnitioncoil (T/F)control


Ignitioncoil


3A

Fuelinjector(FP2)control

Fuel injector(FP2)


Fuelinjector


— — — — —

3B

APVopeningangle

APV motor(APV positionsensor)

High engine speed1.5 orless

APVpositionsensor


Idling1.5 ormore

— — — — —

3C — — — — —

3D

Fuelinjector(RP2)control

Fuel injector(RP2)


Fuelinjector


— — — — —

3E — — — — —

3F — — — — —

3G APVmotor

APV motor (See Inspection Using AnOscilloscope (Reference).) APV motor

*3

*4

*3

*4

*3

*4



control(+)


— — — — —

3H — — — — —

3I — — — — —

3J

APVmotorcontrol(–)

APV motor(See Inspection Using AnOscilloscope (Reference).)

APV motor


— — — — —

3K — — — — —

3L — — — — —

3M — — — — —

3N — — — — —

3O — — — — —

3P — — — — —

3Q — — — — —

3R — — — — —

3S — — — — —

3T — — — — —

3U — — — — —

3 V — — — — —

3W — — — — —

3X — — — — —

3Y — — — — —

3Z — — — — —

4A GND GND Under any condition1.0 orless


4B — — — — —

4CDrive-by-wire relaycontrol

Drive-by-wirerelay

Ignitionswitchat ON

When the drive-by-wire systemhas a malfunction.

1.0 orless

Drive-by-wire relay


4D EVAP leakdetection

EVAP leakdetection pump

Ignition switch at ON B+EVAP leak

*3

*4

*3

*4



pump(solenoid)

detectionpump


4EMain relaycontrol

Main relayIgnitionswitchat ON

No malfunction1.0 orless

Main relay

RelatedwiringharnessesMalfunctioning B+

4F

Clutchswitch

Clutch switchIgnitionswitchat ON

The clutch pedal isdepressed.

1.0 orless

Clutchswitch


— — — — —

4G — — — — —

4H

EVAP leakdetectionpump(pump)

EVAP leakdetection pump

Ignition switch at ON B+EVAP leakdetectionpump


Idling B+

4I — — — — —

4J GND GND Under any condition1.0 orless


4K

BAROsensorpowersupply

BARO sensor Under any conditionApprox.

5.0

BAROsensor


4L — — — — —

4MFuel pumpspeedcontrol

Fuel pumpspeed controlrelay

High engine speed andhigh load

1.0 orless

Fuel pumpspeedcontrolrelay


4N — — — — —

4O AIR pump AIR pump relay During the specified period 1.0 or

*1

*2



control after sold start less AIR pumprelay

RelatedwiringharnessesIdling after warm-up B+

4P

Brakeswitch

Brake switch

When the brake pedal isdepressed.

B+ Brakeswitch

RelatedwiringharnessesExcept above

1.0 orless

— — — — —

4Q IG1 Ignition relay

Ignition switch at ON B+ Ignitionrelay


Except above1.0 orless

4R — — — — —

4S CAN_L —

Because this terminal is forcommunication, good/nogood judgment by terminalvoltage is not possible.

—Relatedwiringharnesses

4TCoolantlevelswitch

Coolant levelswitch

Ignitionswitchat ON

Engine coolantlevel in the coolantreserve tank ismore than the Lmark.

B+ Coolantlevelswitch


Engine coolantlevel in the coolantreserve tank is atthe L mark or less.

1.0 orless

4USensorGND

MAF sensor,BARO sensor



4V CAN_H —

Because this terminal is forcommunication, good/nogood judgment by terminalvoltage is not possible.

—Relatedwiringharnesses

4WA/Ccontrol

Refrigerantpressure switch(high pressureand lowpressure)

Idling

A/C switch off B+Refrigerantpressureswitch


A/C switch and fanswitch on

1.0 orless

4X APP APP sensor Under any condition Approx.

*7

*8



sensor 2powersupply

5.0 APPsensor


4Y

APPsensor 1powersupply

APP sensor Under any conditionApprox.

5.0

APPsensor


4Z A/C load

Refrigerantpressure switch(mediumpressure)

Idling

Refrigerantpressure is 1.11MPa {11.3kgf/cm , 161 psi}or less.

B+ Refrigerantpressureswitch


Refrigerantpressure is 1.60MPa {16.3kgf/cm , 232 psi}or more.

1.0 orless

5AStarterrelay

Starter relay

Ignition switch is turned toSTART using keyregistered in immobilizersystem

1.0 orless Starter

relay


Ignition switch is turned toSTART using key notregistered in immobilizersystem

B+

5B — — — — —

5CAPPsensor 2

APP sensorIgnitionswitchat ON


3.23—3.38

APPsensor



1.005—

1.105

5D GND GND Under any condition1.0 orless


5E — — — — —

5FAPPsensor 1

APP sensorIgnitionswitchat ON


3.78—3.93

APPsensor



1.555—

1.655

5G — — — — —

2

2



5H Drive-by-wire relaycontrol

Drive-by-wirerelay

Ignitionswitchat ON

There is amalfunction in thedrive-by-wiresystem.

1.0 orless

Drive-by-wire relay


Except above B+

5I — — — — —

5J

Backuppowersupply(KAM)

Battery Under any condition B+

Battery


5K IAT sensorMAF/IATsensor

Ignitionswitchat ON

IAT 0 °C {32 °F}Approx.

3.4

IAT sensor



2.4


1.5


0.9


0.5

IAT 100 °C {212°F}

Approx.0.3

5L — — — — —

5M — — — — —

5NMAFsensor

MAF sensor

MT

Idling1.16—1.23

MAFsensor


2,500 rpm1.49—1.64

AT

Idling1.21—1.29

2,500 rpm1.54—1.67

5O GND GND Under any condition1.0 orless


5PFuel pumprelaycontrol

Fuel pumprelay

Engine runs.1.0 orless Fuel pump

relay


Engine stops. B+

5Q — — — — —

5R GND GND Under any condition 1.0 or



less Relatedwiringharnesses

5SBAROsensor

BARO sensorIgnitionswitchat ON

Altitude:0 m {0 ft}3.8—4.2*

BAROsensor


Altitude:305 m{1,000 ft}

3.6—4.0*


3.5—3.9*


3.4—3.7*

Altitude:1,219 m{4,000 ft}

3.2—3.6*


3.1—3.5*


3.0—3.4*


2.9—3.3*

5T GND GND Under any condition1.0 orless


5UMAFsensorGND

MAF sensor Under any condition1.0 orless

MAFsensor


5V

Cruisecontrolswitch

Cruise controlswitch

Ignitionswitchat ON

CRUISE MAINswitch pressed in

Approx.0

Cruisecontrolswitch


CANCEL switchpressed in

0.25—0.26

SET/COASTswitch pressed in

1.16—1.20

RES/ACCELswitch pressed in

2.47—2.53

Except aboveApprox.

5

— — — — —

5W ECT (A/Cunit)

A/C unit Ignitionswitchat ON


4.0 A/C unit



3.1

ECT 40 °C {104 Approx.

9

9

9

9

9

9

9

9

*5

*6



°F} 2.1

ECT 60 °C {140°F}

Approx.1.4

ECT 80 °C {176°F}

Approx.0.9

ECT 100 °C {212°F}

Approx.0.5

5XElectricalfan control

Cooling fanrelay

The cooling fan isoperating.

1.0 orless

Coolingfan relay


5Y — — — — —

5Z

VFADcontrol

VFAD solenoidvalve

High engine speed1.0 orless

VFADsolenoidvalve


— — — — —

5AA A/C relay A/C relayIgnitionswitchat ON

A/C switch on andfan switch at 1st orhigher

1.0 orless

A/C relay


Except above B+

5ABAPPsensorGND 2

APP sensor Under any condition1.0 orless

APPsensor


5ACPowersupply

Main relay Under any condition B+

Main relay


5ADElectricalfan control

Cooling fanrelay

The cooling fan is operatingat high speed.

1.0 orless

Coolingfan relay


5AE APPsensorGND 1

APP sensor Under any condition 1.0 orless APP

sensor

*3

*4




5AFPowersupply

Main relay Under any condition B+

Main relay


MT

AT

13B-MSP (High Power)

13B-MSP (Standard Power)

With cruise control system

Without cruise control system

With cruise control system and DSC

Without cruise control system and DSC

The voltage may vary excessively depending on the weather or battery conditions.

Inspection Using An Oscilloscope (Reference)

NOTE:

The duty ratio for the wave pattern can vary with the control conditions. Thereforedetermine comprehensively where the malfunction occurs among the input systems, outputsystems, and the PCM.

Throttle control (+)

Terminal connected: 1B (+)—Negative battery terminal

Oscilloscope setting: 5 V/DIV (Y): 0.4 ms/DIV (X), DC range

Measurement condition: Ignition switch at ON

Throttle control (–)

*1

*2

*3

*4

*5

*6

*7

*8

*9



Terminal connected1C (+)—Negative battery terminal

Oscilloscope setting: 5 V/DIV (Y): 1 ms/DIV (X), DC range

Measurement condition: As soon as the accelerator pedal is fully released from the fullydepressed position while the ignition switch is at ON (engine off).

Front HO2S heater control

Terminal connected:1V (+)—Negative battery terminal


Measurement condition: Idling after warm-up (no load)

Fuel injector (FS, RS) control

Terminal connected:

FS: 2G (+)—Negative battery terminal

RS: 2D (+)—Negative battery terminal


Measurement condition: Racing after warm-up (no load)

Field coil control (Generator)

Terminal connected: 2I (+)—Negative battery terminal

Oscilloscope setting: 0.5 V/DIV (Y): 1 ms/DIV (X), DC range




Fuel injector (FP1, RP1) control

Terminal connected:

FP1: 2M (+)—Negative battery terminal

RP1: 2J (+)—Negative battery terminal



Terminal connected:

FP1: 2M (+)—Negative battery terminal

RP1: 2J (+)—Negative battery terminal


Measurement condition: Cranking while the engine is cold. (ECT: Approx. 20 °C {68 °F})

Purge control

Terminal connected:2P (+)—Negative battery terminal



NOTE:



Purge control might not be activated depending on the engineconditions.

Generator output voltage

Terminal connected: 2T (+)—Negative battery terminal



Eccentric shaft position sensor

Terminal connected: 2U (+)—Negative battery terminal



Metering oil pump control 1

Terminal connected: 2W (+)—Negative battery terminal


Measurement condition: Just after the ignition switch is off after warm-up (no load)




Terminal connected: 2AB (+)—Negative battery terminal




Terminal connected: 2V (+)—Negative battery terminal




Terminal connected: 2Y (+)—Negative battery terminal



Ignition coil (L/F, L/R, T/F, T/R)

Terminal connected:



L/F: 2AA (+)—Negative battery terminal

L/R: 2Z (+)—Negative battery terminal

T/F: 2AD (+)—Negative battery terminal

T/R: 2AC (+)—Negative battery terminal



Fuel injector (FP2, RF2) control

Terminal connected:

FP2: 3A (+)—Negative battery terminal

RP2: 3D (+)—Negative battery terminal


Measurement condition: Racing after warm-up (no load)

APV motor control (+)

Terminal connected: 3G (+)—Negative battery terminal


Measurement condition: Engine speed 6,250 rpm or more after warm-up (approx. 2 s afterthe APV remains open)

APV motor control (–)



Terminal connected: 3J (+)—Negative battery terminal


Measurement condition: Within 20 s from 2 s after the accelerator is released from theengine speed at 6,250 rpm or more after warm-up.

Using the WDS or Equivalent

NOTE:

PIDs for the following parts are not available on this model. Go to the appropriate partinspection page.

Main relay (See RELAY INSPECTION.)

1. Connect the WDS or equivalent to the DLC-2.

2. Turn the ignition switch to ON position.

3. Measure the PID value.

If PID value is not within the specification, follow the instructions in Actioncolumn.

NOTE:

The PID/DATA MONITOR function monitors the calculated value of theinput/output signals in the PCM. Therefore, an output device malfunction is notdirectly indicated as a malfunction of the monitored value for the output device. Ifa monitored value of an output device is out of specification, inspect themonitored value of the input device related to the output control.

For input/output signals except those of the monitoring items, use a voltmeter tomeasure the PCM terminal voltage.

The simulation items that are used in the ENGINE CONTROL SYSTEMOPERATION INSPECTION are as follows.

ACCS, AIP RLY, ALTF, APV, ARPMDES, DEI, ETC_DSD,EVAPCP, FAN1, FAN2, FP, FPRR, FUELPW, GENVDSD,HTR11, HTR12, IASV, MOP POS, PACNTV, SSV, test

PID/DATA monitor table (reference)

Monitor item(Definition)

Unit/Condition Condition/Specification (Reference) Inspection item(s)

ACCS (A/Crelay)

On/Off

Ignition switch ON: Off

A/C switch ON and fanswitch ON at idling: On

The following PIDs

ECT, IVS,PCM_T, RPM,TP, VSS

A/C relay

AIP RLY (AIRpump relay)

On/Off

During the specified periodafter cold: On

Idling after warm-up: Off

The following PIDs

CATT11_DSD,ECT, IAT

AIR pump relay



ALTF(Generatorfield coilcontrol dutyvalue)

%Ignition switch ON: 0%

Just after A/C switch ON andfan switch ON at idling: Dutyvalue rises

The following PIDs

ALTT V, B+,ECT, IAT, IVS,PCM_T, RPM,VSS

ALTT V(Generatoroutputvoltage)

V

Ignition switch ON: 0 V

Idling: Approx. 14.9 V (E/Lnot operating)

Generator.

APP(Acceleratorpedalposition)

%

Accelerator pedal released:0%

Accelerator pedaldepressed: 100%

The following PIDs

APP1, APP2

APP sensor

APP1(Acceleratorpedalposition)

%

Accelerator pedal released:31.1—33.1%

Accelerator pedaldepressed: 75.6—78.6%

APP sensor

V

Accelerator pedal released:1.555—1.655 V

Accelerator pedaldepressed: 3.78—3.93 V

APP2(Acceleratorpedalposition)

%

Accelerator pedal released:20.1—22.1%

Accelerator pedaldepressed: 64.6—67.6%

APP sensor

V

Accelerator pedal released:1.005—1.105 V

Accelerator pedaldepressed: 3.23—3.38 V

APV (APVmotor)

Opening/Closing

High engine speed afterwarm-up: Opening

Except above: Closing

The following PIDs

APV_POS,BARO, ECT,IAT, MAF,RPM, TP

APV motor

APV_POS(APV positionsensor)

VHigh engine speed afterwarm-up: 1.5 V or less

APV position sensor

*1

*6

*6



Except above: 1.5 V or more

ARPMDES(Target enginespeed)

RPM

MTNo load after warm-up: 750—850 rpm

ATNo load after warm-up: 760—860 rpm

The following PIDs

ACCS, ALTTV, B+, COLP,ECT, IAT,MAF, RPM,TP

B+ (Batterypositivevoltage)

V Ignition switch ON: B+ Battery

BARO(Barometricpressure)

kPa, Bar, psiIgnition switch ON: Indicatethe atmospheric pressure

BARO sensor

VIgnition switch ON

Altitude0 m {0ft}: 3.8—4.2 V*

Altitude305 m{1,000ft}: 3.6—4.0 V*

Altitude610 m{2,000ft}: 3.5—3.9 V*

Altitude914 m{3,000ft}: 3.4—3.7 V*

Altitude1,219 m{4,000ft}: 3.2—3.6 V*

Altitude1,524 m{5,000ft}: 3.1—3.5 V*

Altitude1,829 m{6,000ft}: 3.0—3.4 V*

4

4

4

4

4

4

4



Altitude2,134 m{7,000ft}: 2.9—3.3 V*

BOO

(Brake switch)On/Off

Brake pedal depressed: On

Brake pedal released: OffBrake switch

CATT11_DSD

(Estimatedcatalyticconvertertemperature)

°C °FIdling after warm-up: Approx.531 °C {988 °F}

The following PIDs

ECT, IAT,LOAD, RPM

CHRGLP(Generatorwarning light)

On/OffIgnition switch ON: On

Idling: OffGenerator warning light

COLP(Refrigerantpressureswitch(middle))

ON/OFF

Refrigerant pressure switch(middle) ON at idling: ON

Refrigerant pressure switch(middle) OFF at idling: OFF

Refrigerant pressure switch

CPP

(Clutch pedalposition)

On/OffClutch pedal depressed: On

Clutch pedal released: OffCPP switch

CPP/PNP(Shift leverposition)

Drive/NeutralNeutral position: Neutral

Except above: DriveNeutral switch

DEI (VDIsolenoidvalve)

On/Off

Idling: Off

High engine speed afterwarm-up: On

The following PID

RPM

VDI solenoid valve

DTCCNT(Number ofDTCdetected)

— — —

ECT (Enginecoolanttemperature)

°C °FIgnition switch at ONposition: Indicate the ECT

ECT sensor

V

ECT 20 °C {68 °F}: approx.3.1 V

ECT 80 °C {176 °F}: approx.0.9 V

4

*2

*3

*5

*5



EQ_RAT11

(Front oxygensensor)

— Idling after warm-up: Approx.1

Front HO2S

ETC_ACT(Electronicthrottle controlactual)

°CTP: 6.3° oρ λεσσ

WOT: Approx. 83°

The following PIDs

TP1, TP2

ETC_DSD(Electronicthrottle controldesired)

°CTP: 6.3° oρ λεσσ

WOT: Approx. 83°The following PIDs

APP

%CTP: 7% oρ λεσσ

WOT: Approx. 100%

EVAPCP(Purgesolenoid valveduty value)

%

Ignition switch ON: 0%

Increase the engine speed:Duty value rises

The following PIDs

BARO, ECT,FUELSYS,IAT, LOAD,MAF, RPM

Purge solenoid valve

FAN1

(Cooling fancontrol)

On/Off

The cooling fan is operating:On

Except above: Off

The following PIDs

COLP, ECT,IAT, PCM_T

Cooling fan relay No.1

FAN2

(Cooling fancontrol)

On/Off

The cooling fan is operatingat high speed: On

Except above: Off

The following PIDs

COLP, ECT,IAT, PCM_T

Cooling fan relay No.2

FLI

(Fuel level)%

Fuel gauge level F: Approx.100%

Fuel gauge level E: Approx.0%

Fuel tank gauge unit

FP (Fuelpump relay)

On/Off

Ignition switch ON: Off

Idling: On

Cranking: On

The following PID

RPM

Fuel pump relay

FPRR (Fuelpump speed

On/OffIgnition switch ON: Off The following PIDs



control relay) Idling: Off

Cranking: On

B+, BARO,ECT, IAT,MAF, O2S11,O2S12, RPM,TP

Fuel pump speed control relay

FUELPW(Fuel injectorduration)

ms

Cranking (before warm-up[ECT: 20 °C {68 °F}]):approx. 48 ms

Cranking after warm-up:approx. 9.6 ms

Idling after warm-up: 2.9—3.5 ms

The following PIDs

APP, B+,BARO, ECT,IAT, KNOCKR,MAF, O2S11,O2S12, RPM,TP, VSS

Fuel injector

FUELSYS

(Fuel systemstatus)

OL/CL/

OL Drive/

OL Fault/

CL Fault

Idling after warm-up: CL

The following PIDs

APP, B+,BARO, ECT,IAT, KNOCKR,MAF, O2S11,O2S12, RPM,TP, VSS

GENVDSD

(Generatorvoltagedesired)

V

Ignition switch ON: 0 V

Idling: Approx. 14.9 V (E/Lnot operating)

The following PIDs

ALTT V, B+,BOO, ECT,IAT, PCM_T,RPM, VSS

HTR11

(Front HO2Sheater)

On/Off Idling after warm-up: On

The following PIDs

B+, ECT, IAT,LOAD, MAF

Front HO2S heater

HTR12

(Rear HO2Sheater)

On/Off Idling after warm-up: On

The following PIDs

B+, ECT, IAT,LOAD, MAF

Rear HO2S heater

IAC (Idle aircontrol)

%Ignition switch ON: Approx.26%

Idling after warm-up: Approx.21%

The following PIDs

ALTT V, APP,ARPMDES,COLP, ECT,

*1



EVAPCP,RPM, VSS

Throttle valve actuator

IASV

(VFADsolenoidvalve)

On/OffHigh engine speed: On

Idling: Off

The following PID

RPM

VFAD solenoid valve

IAT

(Intake airtemperature)

°C °FIgnition switch at ONposition: Indicate the IAT

IAT sensor

V

IAT 20 °C {68 °F}: Approx.2.4 V

IAT 40 °C {104 °F}: Approx.1.5 V

INGEAR (Ingear)

On/Off

MTWhen the followingconditions are satisfied: On

Engineruns

Notneutral

Clutchpedalreleased

Except above: Off

ATWhen the followingconditions are satisfied: On

Engineruns

Drivingrange

Except above: Off

The following PIDs

CPP,CPP/PNP,RPM

IVS (CTPcondition)

Idle/

Off Idle

CTP: Idle

Except above: Off idle

The following PID

APP

KNOCKR(Knockingretard)

°Ignition switch ON: 0 °

Idling: 0 °KS

*6



LOAD(Engine load)

% MTIdling: 18.0—25.0%

Engine speed 2,500 rpm (noload): 13.5—19.5%

ATIdling: 20.0—28.0%

Engine speed 2,500 rpm (noload): 15.0—21.0%

The following PIDs

BARO, IAT,MAF, RPM

LONGFT1(long term fueltrim)

%Idling after warm-up:approx.–12.5—12.5%

The following PIDs

ECT, LOAD,MAF, RPM,SHRTFT

MAF (Massairflow)

g/s

MTIdling after warm-up: 3.8—4.7 g/s

Engine speed 2,500 rpm (noload): 8.7—11.7 g/s

ATIdling after warm-up: 4.4—5.3 g/s

Engine speed 2,500 rpm (noload): 9.5—12.5 g/s

MAF sensor

V

MTIdling after warm-up: 1.16—1.23 V

Engine speed 2,500 rpm (noload): 1.49—1.64 V

ATIdling after warm-up: 1.21—1.29 V

Engine speed 2,500 rpm (noload): 1.54—1.67 V

MIL(Malfunctionindicatorlamp)

On/OffIgnition switch ON: On

Idling: OffMIL

MIL_DIS(Travelleddistance sincethe MILilluminated)

Indicate the travelled distance since the MIL illuminated

MOP_POS(Metering oilpump)

—When the initial set functionis operating: value is

The following PIDs



increased BARO, ECT,IAT,MOP_SW,RPM

Metering oil pump

MOP_SW(Metering oilpump switch)

On/OffWhen the initial set functionis operating: On

Metering oil pump switch

O2S11

(Front oxygensensor)

mAIdling after warm-up: Approx.0 mA

Front HO2S

O2S12

(Rear oxygensensor)

VIdling after warm-up: 0.1—0.9 V

Rear HO2S

PACNTV (AIRsolenoid valvecontrol)

On/OffAIR pump operating: On

AIR pump not operating: Off

The following PIDs

CATT11_DSD,ECT, IAT

AIR solenoid valve

PCM_T (PCMtemperaturesensor)

V

Ignition switch at ONposition: Indicate the PCMtemperature sensor outputvoltage

PCM

RO2FT1

(Rear oxygensensor fueltrim)

—Idling after warm-up:approx.–0.03—0.03

The following PID

O2S12

RPM (Enginespeed)

RPMEngine runs: Indicate theengine speed

Eccentric shaft position sensor

SC_SET(Cruise setindicator light)

On/Off

Cruise set indicator light ON:On

Cruise set indicator lightOFF: Off

Cruise indicator light

SCCS (Cruisecontrol switch)

VPress ON/OFF: approx. 0 V

Press CANCEL: approx.0.25 V

Press SET/COAST: approx.1.18 V

Press RES/ACCEL: approx.2.50 V

Cruise control switch



Others: approx. 5.0 V

SELTESTDTC

(DTC)Indicate the Number of the DTCs detected by the KOEO/KOER self-test function

SHRTFT1

(Short termfuel trim(front))

%Idling after warm-up:approx.–4—4%

The following PIDs

APP, B+,BARO, ECT,IAT, KNOCKR,LOAD, MAF,O2S11,O2S12, RPM,TP, VSS

SHRTFT12

(Short termfuel trim(rear))

%Idling after warm-up: approx.0%

The following PIDs

APP, B+,BARO, ECT,IAT, KNOCKR,LOAD, MAF,O2S11,O2S12, RPM,TP, VSS

SPARK-L(Ignitiontiming)

°(BTDC)Idling after warm-up: BTDCApprox. –5 °

The following PIDs

APP, ECT, IAT,IVS,KNOCKR,LOAD, MAF,RPM, TP, VSS

Ignition coil (L/F)

SPARK-T(Ignitiontiming)

°(BTDC)Idling after warm-up: BTDCApprox. 10 °

The following PIDs

APP, ECT, IAT,IVS,KNOCKR,LOAD, MAF,RPM, TP, VSS

Ignition coil (T/F)

SSV (SSVsolenoidvalve)

On/Off

High engine speed and highload after warm-up: On

Idling: Off

The following PIDs

BARO, ECT,IAT, MAF,RPM, TP

SSV solenoid valve

Test On/Off —



Test mode: On

Except above: Off

TIRESIZE(Tirerevolution permile)

rev/mile Indicate the tire revolution per a mile

TP (TP) VCTP: Approx. 0.8 V

WOT: Approx. 3.92 V

The following PIDs

TP1, TP2

TP_REL(Relative TP)

%CTP: Approx. 7%

WOT: Approx. 100%

The following PIDs

TP, TP1, TP2

TP1 (TPsensor 1)

%CTP: 8.0—16.0%

WOT: 76.5—81.9%

TP sensor No.1

VCTP: 0.40—0.80 V

WOT: 3.825—4.095 V

TP2 (TPsensor 2)

%CTP: 23.6—35.6%

WOT: 80.66—86.06%

TP sensor No.2

VCTP: 1.18—1.78 V

WOT: 4.033—4.303 V

TPCT

(TP sensorvoltage atCTP)

VIgnition switch ON (CTP):Approx. 0.6 V

TP sensor

VSS (Vehiclespeed)

km/h MPHVehicle running: Indicate thevehicle speed

ABS HU/CM

DSC HU/CM

*Calculated value; differs from terminal voltage

*Refrigerant pressure switch (middle) turns off when the refrigerant pressure is 1.11 MPa {11.3kgf/cm , 161 psi} or less

*Refrigerant pressure switch (middle) turns on when the refrigerant pressure is 1.60 MPa {16.3kgf/cm , 232 psi} or more

*The voltage may vary excessively depending on the weather or battery conditions.

*MT

*13B-MSP (High Power)

1

2

23

24

5

6

Documents

2004 - RX8 - Workshop Manual - Engine · Report a problem with this article 2004 - RX8 - Workshop Manual - Engine PCM INSPECTION Not Using the WDS or Equivalent NOTE: The PCM terminal