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Engine Control System (Aj): Other Mazda 6 GH

Testing & Diagnostics 17 illustrations ~1799 words

Freeze Frame Data Monitor Table

  1. Retrieve the following FFD. NOTE: FFD is a snapshot of the conditions that are present when DTC or PENDING CODE is stored. Once FFD is stored, this data will remain in PCM memory even if another emission related DTC or PENDING CODE is stored additionally, except for Misfire or Fuel System related DTC or PENDING CODE. Once Misfire or Fuel System related DTC or PENDING CODE is stored, it will overwrite any previous data and the FFD will not be further overwritten. When DTC associated with the FFD is erased or PCM is reset, new FFD can be stored.
Support itemCondition/Unit
DTC that caused required FFD storage
Fuel system loop statusRefer to list below
Engine load calculated value%
Engine coolant temperature°C°F
Short fuel trim%
Long fuel trim%
Engine speedRPM
Vehicle speedKm/hMph
Spark advanceBTDC
Intake air temperature°C°F
Mass air flowG/s
Throttle position (sensor No.1)%
Time since engine startSec.
Desired EGR valve opening angle%
Desired purge solenoid valve control duty%
Fuel level%
Number of warm-ups since DTCs cleared
Distance travelled since DTCs clearedKmMiles
Barometric pressureKPa
Estimated catalyst converter temperature°C°F
PCM power supply voltageV
Absolute load value%
Relative throttle position%
Throttle position (sensor No.2)%
Accelerator pedal position (sensor No.1)%
Accelerator pedal position (sensor No.2)%
Desired throttle valve opening angle%
Desired Equivalence Ratio
Ambient air temperatureDeg.C

FREEZE FRAME DATA MONITOR

Meaning of fuel system loop status

  1. The following information is displayed on the tester. Feedback stops: ECT is lower than the determined feedback zone. Feedback operating: HO2S being used for feedback is normal. Feedback stops: Open loop due to driving condition Feedback stops: Open loop due to detected system fault Feedback operating: Malfunction occurred in HO2S (rear) system

Scheme 118

Scheme 118: Terminal Voltage Table (Reference)
Scheme 118: Terminal Voltage Table (Reference)
TerminalSignalConnected toMeasurement conditionVoltage (V)Inspection item
1AB+Main relayIG SW OFF after 5 minBelow 1.0Main relay Related wiring harness
IG SW ONB+
1BB+Main relayIG SW OFF after 5 min1.0 or lessMain relay Related wiring harness
IG SW ONB+
1C
1DGroundBody groundUnder any condition1.0 or lessRelated wiring harness
1EBack-up power supplyBattery (positive terminal)Under any conditionB+Battery Related wiring harness
1F
1G
1H
1IImmobilizer systemCoil antennaBecause this terminal is for communication, good/no good judgment by terminal voltage is not possible.Related wiring harness
IJImmobilizer systemCoil antennaBecause this terminal is for communication, good/no good judgment by terminal voltage is not possible.Related wiring harness
1K
1L
1MSecurity light controlInstrument cluster (Security light)While the security light is illuminated1.0 or lessInstrument cluster Related wiring harness
Except aboveB+
1N (1) , (3)Vehicle speed outputInstrument cluster (Speedometer)Because this terminal is for communication, good/no good judgment by terminal voltage is not possible.Instrument cluster Related wiring harness
1O
1PMAF/IAT sensor groundMAF/IAT sensorIG SW ON1.0 or lessMAF/IAT sensor Related wiring harness
Idle1.0 or less.
1QCAN (H)Instrument cluster, ABS/TCS HU/CM, TCM, TPMS control moduleBecause this terminal is for CAN, good/no good judgment by terminal voltage is not possible.Related wiring harness
1RCAN (L)Instrument cluster, ABS/TCS HU/CM, TCM, TPMS control moduleBecause this terminal is for CAN, good/no good judgment by terminal voltage is not possible.Related wiring harness
1S
1TAPP sensor ground (No. 2)APP sensor No. 2IG SW ON1.0 or lessAPP sensor Related wiring harness
1UFan controlFan control moduleInspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).Fan control module Related wiring harness
1VFuel pump controlFuel pump relayIG SW ONB+Fuel pump relay Related wiring harness
Cranking1.0 or less
Idle
1W
1XAPP sensor ground (No. 1)APP sensor No. 1IG SW ON1.0 or lessAPP sensor Related wiring harness
1YEVAP system leak detection pump (pump)EVAP system leak detection pumpIG SW ONB+EVAP system leak detection pump Related wiring harnesses
IdleB+
1ZBattery voltage input controlMain relayIG SW OFF1.0 or lessMain relay Related wiring harness
IG SW ONB+
1AA
1AB (1)Clutch operationCPP switchClutch pedal depressed1.0 or lessCPP switch Related wiring harness
Clutch pedal releasedB+
1ACDrive-by-wire relay controlDrive-by-wire relayIG SW ON1.0 or lessDrive-by-wire relay Related wiring harness
1ADStarter cut control (1)Starter relayCrankingClutch pedal depressed1.0 or lessStarter relay Related wiring harness
Clutch pedal releasedB+
Starter cut control (2)Starter relayCrankingP or N position1.0 or less
Except aboveB+
1AE
1AFBrake No.2Brake switchBrake pedal depressedB+Brake switch Related wiring harness
Brake pedal released1.0 or less
1AGBattery voltage inputIgnition switchIG SW OFF1.0 or lessIgnition switch Related wiring harness
IG SW ONB+
1AHRefrigerant pressure signal (medium)Refrigerant pressure switch (medium)IdleRefrigerant pressure is 2.06 MPa or more1.0 or lessRefrigerant pressure switch (medium) Related wiring harness
Refrigerant pressure is 1.77 MPa or lessB+
1AI
1AJBrake No.1Brake switchBrake pedal depressedB+Brake switch Related wiring harness
Brake pedal released1.0 or less
1AKIntake air amountMAF sensorEngine speed is 2,500 RPM.Approx. 1.9MAF/IAT sensor Related wiring harness
Idle (after warm up) (no electrical load, A/C off, P/S off)Approx. 1.3
1ALAtmospheric pressureEGR boost sensorIG SW ON (at sea level)Approx. 4.1EGR boost sensor Related wiring harness
1AM
1ANA/C signalRefrigerant pressure switch (high, low), A/C switchIdleA/C switch offB+A/C switch Refrigerant pressure switch (high, low) Related wiring harness
A/C switch and pressure switch on1.0 or less
1AOAPP sensor (No. 1)APP sensor No. 1IG SW ONAPP closed1.55-1.62APP sensor Related wiring harness
APP open3.49-4.09
1APAPP sensor (No. 2)APP sensor No. 2IG SW ONAPP closed1.01-1.07APP sensor Related wiring harness
APP open2.94-3.54
1AQ
1ARAPP sensor voltage (No. 1)APP sensor No. 1IG SW ONApprox. 5.0APP sensor Related wiring harness
1ASCruise control switchCruise control switchIG SW ONON/OFF switch pressed inApprox. 0Cruise control switch Related wiring harness
CANCEL switch pressed inApprox. 1.2
SET/COAST switch pressed inApprox. 3.2
RES/ACCEL switch pressed inApprox. 4.2
OthersApprox. 5.0
1ATIntake air temperatureIAT sensorIG SW ONIAT 20°C{68°F}2.4-2.6IAT sensor Related wiring harness
IAT 30°C{86°F}1.7-1.9
1AU
1AVAPP sensor voltage (No. 2)APP sensor No. 2IG SW ONApprox. 5.0APP sensor Related wiring harness
1AWA/C controlA/C relayA/Con1.0 or lessA/C relay Related wiring harness
A/C offB+
1AXEGR boost sensor solenoid valveEGR boost sensor solenoid valveIdle (after warm up)B+EGR boost sensor solenoid valve Related wiring harness
1AY
1AZConstant voltage (VREF)EGR boost sensorIG ONApprox. 5.0EGR boost sensor Related wiring harness
1BAEVAP system leak detection pump (solenoid)EVAP system leak detection pumpIdleB+EVAP system leak detection pump Related wiring harness
1BBVAD controlVAD control solenoid valveIdle (after warm up)Engine speed below 6,300 RPMB+VAD control solenoid valve Related wiring harness
Engine speed above 6,300 RPM1.0 or less
1BC
1BDEGR boost sensor groundEGR boost sensorUnder any condition1.0 or lessEGR boost sensor Related wiring harness
1BEDrive-by-wire relay powerDrive-by-wire relayIG SW OFFB+Drive-by-wire relay Related wiring harness
IG SW ON1.0 or less
1BFPurge controlPurge solenoid valveInspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).Purge solenoid valve Related wiring harness
1BG
1BHIAT sensor groundIAT sensorUnder any condition1.0 or lessMAF/IAT sensor Related wiring harness
2AThrottle actuator control (+)Throttle actuatorIG SW ONAPP CLOSED1.0 or lessThrottle actuator Related wiring harness
APP OPENApprox. 1.4
2BThrottle actuator control (-)Throttle actuatorIG SW ONAPP CLOSEDApprox. 3.1Throttle actuator Related wiring harness
APP OPEN1.0 or less
2CGroundBody groundUnder any condition1.0 or lessRelated wiring harness
2DGroundBody groundUnder any condition1.0 or lessRelated wiring harness
2EFuel injection (#4)Fuel injector No.4Inspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).Fuel injector No.4 Related wiring harness
2FFuel injection (#5)Fuel injector No.5Inspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).Fuel injector No.5 Related wiring harness
2GFuel injection (#6)Fuel injector No.6Inspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).Fuel injector No.6 Related wiring harness
2HGroundBody groundUnder any condition1.0 or lessRelated wiring harness
21Fuel injection (#1)Fuel injector No.1Inspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).Fuel injector No.1 Related wiring harness
2JFuel injection (#2)Fuel injector No.2Inspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).Fuel injector No.2 Related wiring harness
2KFuel injection (#3)Fuel injector No.3Inspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).Fuel injector No.3 Related wiring harness
2LGroundBody groundUnder any condition1.0 or lessRelated wiring harness
2MOCV controlOCV No.1IG SW ONB+OCV Related wiring harness
2NOCV controlOCV No.2IG SW ONB+OCV Related wiring harness
20EGR valve #4 coil controlEGR valveIG SW ON1.0 or lessEGR valve Related wiring harness
Idle1.0 or less
2P
2QEGR valve #1 coil controlEGR valveIG SW ON1.0 or lessEGR valve Related wiring harness
Idle1.0 or less
2REGR valve #2 coil controlEGR valveIG SW ONB+EGR valve Related wiring harness
IdleB+
2SEGR valve #3 coil controlEGR valveIG SW ONB+EGR valve Related wiring harness
IdleB+
2TPSPPSP switchIdleSteering wheel neutralB+PSP switch Related wiring harness
While steering wheel is turned1.0 or less
2U
2V (1) , (3)VSS (+)VSSVerify that the voltage changes when the engine is started and the front wheel is being driven.VSS Related wiring harness
2W (1) , (3)VSS (-)VSSVerify that the voltage changes when the engine is started and the front wheel is being driven.VSS Related wiring harness
2X (1)Neutral positionNeutral switchIG SW ONShift lever is at neutral position1.0 or lessNeutral switch Related wiring harness
Shift lever is not at neutral positionB+
2YCKP (+)CKP sensorInspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).CKP sensor Related wiring harness
2ZCKP (-)CKP sensorInspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).CKP sensor Related wiring harness
2AACMP (+)CMP sensor (left bank)Inspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).CMP sensor Related wiring harness
2ABCMP (-)CMP sensor (left bank)Inspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).CMP sensor Related wiring harness
2ACKnock (+)KSIG SW ON (Use digital voltmeter. Low voltage may be detected with analog type voltmeter).1.0 or lessKS Related wiring harness
2ADCMP (+)CMP sensor (right bank)Inspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).CMP sensor Related wiring harness
2AECMP (-)CMP sensor (right bank)Inspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).CMP sensor Related wiring harness
2AFKnock (-)KSIG SW ON (Use digital voltmeter. Low voltage may be detected with analog type voltmeter).1.0 or lessKS Related wiring harness
2AGRear HO2S (Right bank)HO2S (RR)Idle (after warm up)0-1.0HO2S(RR) Related wiring harness
Acceleration0.5-1.0
Deceleration0-0.5
2AHRear HO2S (left bank)HO2S (LR)Idle (after warm up)Approx. 0.6HO2S(LR) Related wiring harness
2AITP (No. 2)TP sensor No. 2IG SW ONAPP closed0.75-1.8TP sensor Related wiring harness
APP openApprox. 4.4
2AJECT sensor groundECT senorUnder any condition1.0 or lessECT sensor Related wiring harness
2AKFront HO2S (Right bank)HO2S (RF)Idle (after warm up)0-1.0HO2S (RF) Related wiring harness
Acceleration0.5-1.0
Deceleration0-0.5
2ALFront HO2S (left bank)HO2S (LF)Idle (after warm up)Approx. 0.6HO2S (LF) Related wiring harness
2AMTP(No. 1)TP sensor No. 1IG SW ONAPP closed3.8-4.35TP sensor Related wiring harness
APP openApprox. 1.1
2ANTP sensor groundTP sensorUnder any condition1.0 or lessTP sensor Related wiring harness
2AORear HO2S heater control (left bank)HO2S (LR) heaterInspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).HO2S (LR) Related wiring harness
2APField coil controlGeneratorInspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).Generator Related wiring harness
2AQECTECT sensorIG SW ONECT is 20°C{68°F}2.9-3.1ECT sensor Related wiring harness
After warm-up0.2-1.0
2ARConstant voltage (VREF)TP sensorIG SW ONApprox. 5.0TP sensor Related wiring harness
2ASFront HO2S heater control (left bank)HO2S (LF) heaterInspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).HO2S (LF) Related wiring harness
2ATRear HO2S heater control (right bank)HO2S (RR) heaterInspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).HO2S (RR) Related wiring harness
2AUGenerator output voltageGeneratorInspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).Generator Related wiring harness
2AVHO2S (RF) groundHO2S (RF)Under any condition1.0 or lessHO2S(RF) Related wiring harness
2AWFront HO2S heater control (right bank)HO2S (RF) heaterInspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).HO2S (RF) Related wiring harness
2AXHO2S (LF) groundHO2S (LF)Under any condition1.0 or lessHO2S(LF) Related wiring harness
2AYHO2S (RR) groundHO2S (RR)Under any condition1.0 or lessHO2S(RR) Related wiring harness
2AZGroundBody groundUnder any condition1.0 or lessRelated wiring harness
2BAHO2S (LR) groundHO2S (LR)Under any condition1.0 or lessHO2S(LR) Related wiring harness
2BBIGT4Ignition coil (No.4 cylinder)Inspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).Ignition coil Related wiring harness
2BCIGT5Ignition coil (No.5 cylinder)Inspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).Ignition coil Related wiring harness
2BDIGT6Ignition coil (No.6 cylinder)Inspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).Ignition coil Related wiring harness
2BEIGT1Ignition coil (No.1 cylinders)Inspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).Ignition coil Related wiring harness
2BFIGT2Ignition coil (No.2 cylinder)Inspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).Ignition coil Related wiring harness
2BGIGT3Ignition coil (No.3 cylinder)Inspect using the wave profile. (See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) ).Ignition coil Related wiring harness
2BHGroundBody groundUnder any condition1.0 or lessRelated wiring harness
(1) MTX (2) ATX (3) Without ABS HU/CM
(1)MTX
(2)ATX
(3)Without ABS HU/CM

CONNECTOR TERMINAL VOLTAGE REFERENCE

PCM terminals

  1. No.1 cylinders: 2BE (+) - body ground (-)
  2. No.2 cylinders: 2BF (+) - body ground (-)
  3. No.3 cylinders: 2BG (+) - body ground (-)
  4. No.4 cylinders: 2BB (+) - body ground (-)
  5. No.5 cylinders: 2BC (+) - body ground (-)
  6. No.6 cylinders: 2BD (+) - body ground (-)

Oscilloscope setting

  1. 5 V/DIV (Y), 20 ms/DIV (X), DC range

Scheme 119

Scheme 119: Vehicle condition
Scheme 119: Vehicle condition
  1. Idle after warm up (no load)
  1. 1BF (+) - body ground (-)
  1. 2.5 V/DIV (Y), 20 ms/DIV (X), DC range

Scheme 120

Scheme 120: Vehicle condition
Scheme 120: Vehicle condition
  1. Idle after warm up (no load, during purge control)
  1. 2Y (+)-body ground (-)
  1. 2 V/DIV (Y), 10 ms/DIV (X), DC range

Scheme 121

Scheme 121: Vehicle condition
Scheme 121: Vehicle condition
  1. Idle after warm up (no load) (-)
  1. 2Z (+)-body ground (-)
  1. 5 V/DIV (Y), 5 ms/DIV (X), DC range

Scheme 122

Scheme 122: Vehicle condition
Scheme 122: Vehicle condition
  1. Idle after warm up (no load)
  1. 2AU (+)-body ground (-)
  1. 5V/DIV (Y), 5ms/DIV (X), DC range

Scheme 123

Scheme 123: Vehicle condition
Scheme 123: Vehicle condition
  1. Idle after warm up (no load)
  1. 1U (+)-body ground (-)
  1. 2 V/DIV (Y), 0.2ms/DIV (X), DC range

Scheme 124

Scheme 124: Vehicle condition
Scheme 124: Vehicle condition
  1. Idle after warm up (no load)
  1. 2AP (+)-body ground (-)
  1. 0.5V/DIV (Y), 5ms/DIV (X), DC range

Scheme 125

Scheme 125: Vehicle condition
Scheme 125: Vehicle condition
  1. Idle after warm up (no load)
  1. CMP sensor (left bank): 2AA (+)-body ground (-)
  2. CMP sensor (right bank): 2AD (+)-body ground (-)
  1. 1 V/DIV (Y), 20 ms/DIV (X), DC range

Scheme 126

Scheme 126: Vehicle condition
Scheme 126: Vehicle condition
  1. Idle after warm up (no load) (-)
  1. CMP sensor (left bank): 2AB (+)-body ground (-)
  2. CMP sensor (right bank): 2AE (+)-body ground (-)
  1. 1 V/DIV (Y), 20 ms/DIV (X), DC range

Scheme 127

Scheme 127: Vehicle condition
Scheme 127: Vehicle condition
  1. Idle after warm up (no load)
  1. No.1: 21 (+) - body ground (-)
  2. No.2: 2J (+) - body ground (-)
  3. No.3: 2K (+) - body ground (-)
  4. No.4: 2E (+) - body ground (-)
  5. No.5: 2F (+) - body ground (-)
  6. No.6: 2G (+) - body ground (-)
  1. 2.5 V/DIV (Y), 10 ms/DIV (X), DC range

Scheme 128

Scheme 128: Vehicle condition
Scheme 128: Vehicle condition
  1. Idle after warm up (no load)
  1. Front HO2S (right bank): 2AK (+)-body ground (-)
  2. Front HO2S (left bank): 2AL (+)-body ground (-)
  3. Rear HO2S;(right bank): 2AG (+)-body ground (-)
  4. Rear HO2S (left bank): 2AH (+)-body ground (-)
  1. 0.5V/DIV (Y), 500ms/DIV (X), DC range

Scheme 129

Scheme 129: Vehicle condition
Scheme 129: Vehicle condition
  1. Idle after warm up (no load)
  1. Front HO2S heater (right bank): 2AW (+)-body ground (-)
  2. Front HO2S heater (left bank): 2AS (+)-body ground (-)
  3. Rear HO2S heater (right bank): 2AT (+)-body ground (-)
  4. Rear HO2S heater (left bank): 2AO (+)-body ground (-)
  1. 5V/DIV (Y), 500ms/DIV (X), DC range

Scheme 130

Scheme 130: Vehicle condition
Scheme 130: Vehicle condition
  1. Idle after warm up (no load)

PCM CONFIGURATION [AJ]

  1. Connect the M-MDS to the DLC-2.
  2. After the vehicle is identified, select the following items from the initial screen of the M-MDS. When using the IDS (laptop PC) Select the "Module Programming". When using the PDS (Pocket PC) Select "Programming". Select "Module Programming".
  3. Then, select the "Programmable Module Installation", "PCM" from the screen menu.
  4. Select "PCM" and performance procedures according to the directions on the M-MDS screen.
  5. Retrieve DTC's by the M-MDS, then verify that there in no DTC present. If DTC is present, perform applicable DTC inspection. (See «DTC TABLE [AJ]»(ref-288776-S26157273642008062500000) ).

Open circuit

  1. Clutch switch terminal B and PCM terminal 1AB
  2. Clutch switch terminal D and body ground

Short circuit

  1. Clutch switch terminal B and power supply
  2. Clutch switch terminal B and body ground
  1. Neutral switch terminal A and PCM terminal 2X
  2. Neutral switch terminal B and body ground
  1. Neutral switch terminal A and power supply
  2. Neutral switch terminal A and body ground
  1. PSP switch terminal A and PCM terminal 2T
  1. PSP switch terminal A and power supply
  2. PSP switch terminal A and body ground
  1. APP sensor terminal A and PCM terminal 1AV
  2. APP sensor terminal B and PCM terminal 1T
  3. APP sensor terminal C and PCM terminal 1AP
  4. APP sensor terminal D and PCM terminal 1AR
  5. APP sensor terminal E and PCM terminal 1X
  6. APP sensor terminal F and PCM terminal 1AO
  1. APP sensor terminal A and power supply
  2. APP sensor terminal A and body around
  3. APP sensor terminal B and power supply
  4. APP sensor terminal C and power supply
  5. APP sensor terminal C and body around
  6. APP sensor terminal D and power supply
  7. APP sensor terminal D and body ground
  8. APP sensor terminal E and power supply
  9. APP sensor terminal F and power supply
  10. APP sensor terminal F and body ground
  1. Throttle body terminal C and PCM terminal 2AI
  2. Throttle body terminal D and PCM terminal 2AR
  3. Throttle body terminal E and PCM terminal 2AN
  4. Throttle body terminal F and PCM terminal 2AM
  1. Throttle body terminal C and power supply
  2. Throttle body terminal C and body ground
  3. Throttle body terminal D and power supply
  4. Throttle body terminal D and body ground
  5. Throttle body terminal E and power supply
  6. Throttle body terminal F and power supply
  7. Throttle body terminal F and body ground
  1. ECT sensor terminal A and PCM terminal 2AQ
  2. ECT sensor terminal B and PCM terminal 2AJ
  1. ECT sensor terminal A and power supply
  2. ECT sensor terminal A and body ground
  3. ECT sensor terminal B and power supply
  1. MAF/IAT sensor terminal D and PCM terminal 1 AT
  2. MAF/IAT sensor terminal E and PCM terminal 1BH
  1. MAF/IAT sensor terminal D and power supply
  2. MAF/IAT sensor terminal D and body ground
  3. MAF/IAT sensor terminal E and power supply

MAF Rate and Load Value

Note. The scan tool shows the MAF rate and load value.

Specification

ItemIntake MAF (g/s)Engine load calculated value (%)
MTXATXMTXATX
Idle (1)3.6-3.83.8-4.0Approx. 16.8Approx. 17.5
Engine speed 2,500 RPM (2)10.5-11.210.6-11.4Approx. 14.6Approx. 15.2
(1) 700-800 RPM (2) No load, N position or P position
(1)700-800 RPM
(2)No load, N position or P position

ITEM SPECIFICATION

Scheme 131

Scheme 131: Circuit Open/Short Inspection
Scheme 131: Circuit Open/Short Inspection

Scheme 132

Scheme 132
Scheme 132
  1. Disconnect the PCM connector. (See «PCM REMOVAL/INSTALLATION [AJ]»(ref-288754-S42604058742008062500000) ).
  2. Inspect the following harnesses for open or short circuit. (Continuity check)
  1. MAF/IAT sensor terminal A and main relay terminal C
  2. MAF/IAT sensor terminal B and PCM terminal 1P
  3. MAF/IAT sensor terminal C and PCM terminal 1AK
  1. MAF/IAT sensor terminal A and body ground
  2. MAF/IAT sensor terminal B and power supply
  3. MAF/IAT sensor terminal C and power supply
  4. MAF/IAT sensor terminal C and body ground
  1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. HO2S (RF) terminal A and PCM terminal 2AK HO2S (RF) terminal B and PCM terminal 2AV HO2S (LF) terminal A and PCM terminal 2AL HO2S (LF) terminal B and PCM terminal 2AX HO2S (RR) terminal A and PCM terminal 2AG HO2S (RR) terminal B and PCM terminal 2AY HO2S (LR) terminal A and PCM terminal 2AH HO2S (LR) terminal B and PCM terminal 2BA
  1. If there is continuity, there is a short circuit. Repair or replace the wiring harness. HO2S (RF) terminal A and power supply HO2S (RF) terminal A and body ground HO2S (RF) terminal B and power supply HO2S (LF) terminal A and power supply HO2S (LF) terminal A and body ground HO2S (LF) terminal B and power supply HO2S (RR) terminal A and power supply HO2S (RR) terminal A and body ground HO2S (RR) terminal B and power supply HO2S (LR) terminal A and power supply HO2S (LR) terminal A and body ground HO2S (LR) terminal B and power supply

Scheme 133

Scheme 133: HO2S heater resistance inspection
Scheme 133: HO2S heater resistance inspection
  1. Disconnect the HO2S connector.
  2. Measure the HO2S resistance between terminals C and D. If not within the specification, replace the HO2S. HO2S heater resistance HO2S (RF, LF) heater: 2-50 ohms HO2S (RR, LR) heater: 2-50 ohms

Scheme 134

Scheme 134: HO2S circuit open/short inspection (heater)
Scheme 134: HO2S circuit open/short inspection (heater)
  1. Disconnect the PCM connector.
  2. Disconnect the HO2S connector.
  3. Inspect the following wiring harnesses for an open or short circuit. (Continuity inspection)
  1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. HO2S (RF) terminal C and ignition switch HO2S (RF) terminal D and PCM terminal 2AW HO2S (LF) terminal C and ignition switch HO2S (LF) terminal D and PCM terminal 2AS HO2S (RR) terminal C and ignition switch HO2S (RR) terminal D and PCM terminal 2AT HO2S (LR) terminal C and ignition switch HO2S (LR) terminal D and PCM terminal 2AO
  1. If there is no continuity, there is a short circuit. Repair or replace the wiring harness. HO2S (RF) terminal C and body ground HO2S (RF) terminal D and power supply HO2S (RF) terminal D and body ground HO2S (LF) terminal C and body ground HO2S (LF) terminal D and power supply HO2S (LF) terminal D and body ground HO2S (RR) terminal C and body ground HO2S (RR) terminal D and power supply HO2S (RR) terminal D and body ground HO2S (LR) terminal C and body ground HO2S (LR) terminal D and power supply HO2S (LR) terminal D and body ground
  1. EGR boost sensor terminal A and PCM terminal 1AL
  2. EGR boost sensor terminal B and PCM terminal 1BD
  3. EGR boost sensor terminal C and PCM terminal 1AZ
  1. EGR boost sensor terminal A and power supply
  2. EGR boost sensor terminal A and body ground
  3. EGR boost sensor terminal B and power supply
  4. EGR boost sensor terminal C and power supply
  5. EGR boost sensor terminal C and body ground
  1. KS terminal B and PCM terminal 2AC
  2. KS terminal A and PCM terminal 2AF
  1. KS terminal A and power supply
  2. KS terminal A and body ground
  3. KS terminal B and power supply
  4. KS terminal B and body ground
  1. CMP sensor (RH) terminal A and PCM terminal 2AD
  2. CMP sensor (RH) terminal B and PCM terminal 2AE
  3. CMP sensor (LH) terminal A and PCM terminal 2AA
  4. CMP sensor (LH) terminal B and PCM terminal 2AB
  1. CMP sensor (RH) terminal A and power supply
  2. CMP sensor (RH) terminal A and body ground
  3. CMP sensor (RH) terminal B and power supply
  4. CMP sensor (RH) terminal B and body ground
  5. CMP sensor (LH) terminal A and power supply
  6. CMP sensor (LH) terminal A and body ground
  7. CMP sensor (LH) terminal B and power supply
  8. CMP sensor (LH) terminal B and body ground
  1. CKP sensor terminal A and PCM terminal 2Z
  2. CKP sensor terminal B and PCM terminal 2Y
  1. CKP sensor terminal A and power supply
  2. CKP sensor terminal A and body ground
  3. CKP sensor terminal B and power supply
  4. CKP sensor terminal B and body ground

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