PCM INSPECTION [WITHOUT WU-TWC]

id0140008025d3

  Note
  • PIDs for the following parts are not available for this model. Go to the appropriate part inspection page.
    ― CMP sensor (See CAMSHAFT POSITION (CMP) SENSOR INSPECTION.)
    ― Main relay (See RELAY INSPECTION.)

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

am2zzw00004570

2. Turn the ignition switch to the ON position.

3. Inspect the monitor items.

  • If the monitor item condition/specification (reference) is not within the specification, inspect “Inspection item(s)”.

  Note
  • The PID/DATA MONITOR function monitors the calculated value of the input/output signals in the PCM. Therefore, an output device malfunction is not directly indicated as a malfunction of the monitored value for the output device. If a monitored value of an output device is not within specification, inspect the monitored value of the input device related to the output control.
  • The simulation items are as follows.
    ― ACCS
    ― ALTF
    ― ARPMDES
    ― EVAPCP
    ― FAN1
    ― FAN2
    ― FP
    ― FUELPW1
    ― GENVDSD
    ― HTR11
    ― IAC
    ― IMRC
    ― IMTV
    ― INJ_1, INJ_2, INJ_3, INJ_4
    ― test
    ― VT DUTY1

PID/DATA monitor table (reference)

Monitor item (definition) | Unit/Condition | Condition/Specification (Reference) | Inspection item(s) | PCM terminal
--- | --- | --- | --- | ---
A/CL V (Refrigerant pressure switch (Low, high)) | V | • A/C is not operating: Approx. 5 V • A/C is operating: 1.0 V or less | • Refrigerant pressure switch (Low, high) | 1Q
A/CT (Evaporator temperature) | °C, °F | • Evaporator temperature is 20°C {68°F}: 20°C {68°F} | • Evaporator temperature sensor | 1AD
A/CT V (Evaporator temperature (Voltage)) | V | • Evaporator temperature is 20°C {68°F}: 2.5 V | • Evaporator temperature sensor | 1AD
ACCS (A/C relay) | On/Off | • A/C is operating: On • A/C is not operating: Off | • Inspect the following monitor items: ― ACSW, ALTT V, ECT, PSP, RPM, TP | 1AL
ACSW (A/C switch) | On/Off | • A/C switch is on: On • A/C switch is off: Off | • A/C switch | 1Q
ALTF (Generator field coil control duty value) | % | • Ignition switch is ON: 0% • Idling, E/L is operating: Duty value increases. | • Inspect the following monitor items: ― ALTT V, VPWR, IAT, RPM • Generator | 2AN
ALTT V (Generator output voltage) | V | • Ignition switch is ON: Approx. 1.0 V or less • Idling (No electrical load): Approx. 14.9 V (This is an internal calculation value and differs from the terminal voltage.) | • Inspect the following monitor items: ― ALTF, VPWR, IAT, RPM • Generator | 2AR
ARPMDES (Target engine speed) | RPM | • No load: 700 RPM • A/C is operating (A/C pressure switch (Middle) is on): 750 RPM • E/L is operating: 750 RPM • P/S is operating: 750 RPM | • Inspect the following monitor items: ― A/CL V, ACCS, ACSW, ALTT V, ECT, IAT, MAF, PSP, test, TP, CPP/PNP, RPM • IAC valve | —
BOO (Brake switch) | On/Off | • Brake pedal is depressed: On • Brake pedal is released: Off | • Brake switch | 1V
CPP*1 (Clutch pedal position) | On/Off | • Clutch pedal is depressed: On • Clutch pedal is released: Off | • Clutch switch | 1P
CPP/PNP*1 (Shift lever position) | Drive/Neutral | • Neutral: Neutral • Other than neutral: Drive | • Neutral switch | 1AB
DTCCNT (Number of DTC detected) | — | • Number of DTCs output | — | —
ECT (Engine coolant temperature) | °C, °F | • ECT is 20°C {68°F}: 20°C {68°F} • ECT is 60°C {140°F}: 60°C {140°F} • ECT is 80°C {176°F}: 80°C {176°F} | • ECT sensor | 2J
V | • ECT is 20°C {68°F}: Approx. 3.0 V • ECT is 60°C {140°F}: Approx. 1.4 V • ECT is 80°C {176°F}: Approx. 0.9 V
EVAPCP (Purge solenoid valve duty value) | % | • Ignition switch is ON: 0% • Idling: 10% | • Inspect the following monitor items: ― VPWR, ECT, O2S11, MAF, RPM, test, TP | 2AV
FAN1 (Fan relay No.1 control) | On/Off | • During test mode CTP: Off WOT: On | • Inspect the following monitor items: ― ECT, test, TP | 1AT
FAN2 (Fan relay No.2 control) | On/Off | • During test mode CTP: Off WOT: On | • Inspect the following monitor items: ― ECT, test, TP | 1I
FP (Fuel pump relay) | On/Off | • Ignition switch is ON: Off • Idling or cranking: On | • Fuel pump relay | *41AC
*51AH
FUELPW (Fuel injector duration) | ms | • Idling: Approx. 3.0 ms | • Inspect the following monitor items: ― MAF, IAT, RPM, ECT, O2S11, TP, TR, PSP, VSS, ACSW, BOO, VPWR | 2B, 2C, 2D, 2H
FUELSYS (Fuel system status) | OL_Drive/ OL/ CL_Fault/ OL_Fault/ CL | • Idling after completely warmed up: CL • Deceleration with CTP: OL | • Inspect the following monitor items: ― MAF, IAT, RPM, ECT, O2S11,TP, TR, PSP, VSS, ACSW, BOO, VPWR | —
GEAR*2 | (See PID/DATA MONITOR INSPECTION [FN4A-EL].)
GENVDSD (Generator voltage desired) | V | • Idling (no electrical load): Approx. 14.9 V (This is an internal calculation value and differs from the terminal voltage.) | • Inspect the following monitor items: ― ALTF, VPWR, IAT, RPM • Generator | —
HTR11 (HO2S heater control) | On/Off | • Ignition switch is ON: Off • Engine speed is 4,300 rpm or less: On | • Inspect the following monitor items: ― ECT, MAF, RPM, TP, VPWR | 2AM
IAC (IAC valve control) | % | • Ignition switch is ON: 0% • Idling (ECT is 90°C {194°F}, no load condition): Approx. 23% | • Inspect the following monitor items: ― A/CL V, ACSW, ALTT V, ECT, PSP, test, TP, RPM | 2X, 2AB
IAT (Intake air temperature) | V | • IAT is 20°C {68°F}: Approx. 2.5 V • IAT is 30°C {86°F}: Approx. 1.8 V | • IAT sensor | 2AQ
°C, °F | • IAT is 20°C {68°F}: 20°C {68°F} • IAT is 30°C {86°F}: 30°C {86°F}
IMRC (VTCS) | On/Off | • Cold start and 3,250 rpm or less: On • Hot start or 3,250 rpm or more: Off | • Inspect the following monitor items: ― TP, RPM, ECT | 2AF, 2AJ
IMTV*3 (VIS) | On/Off | • Engine speed is less than 4,100 rpm: On • Engine speed is 4,100 rpm or more: Off | • Inspect the following monitor items: ― TP, RPM, ECT | 2AO, 2AS
INGEAR (Gears are engaged.) | On/Off | • Clutch pedal is released: On • Clutch pedal is depressed: Off • Other than neutral: On • Neutral: Off | • Clutch switch • Neutral switch | *11P, 1AB
• Other than P and N positions: On • P or N position: Off | • TR switch | *2—
IVS (CTP condition) | Idle/Off Idle | • Idling: Idle • Other than idling: Off Idle | • Inspect the following monitor item: ― TP | 2AA
KNOCKR (Knocking retard) | ° | • Ignition switch is at the ON position: 0° • Idling: 0° | • Knock sensor | 2BA
LINEDES*2 | (See PID/DATA MONITOR INSPECTION [FN4A-EL].)
LOAD (Engine load (charging efficiency)) | % | • Idling (After warm-up): Approx. 19% | • DTC inspection | —
LONGFT1 (Long term fuel trim) | % | • Idling (After warm-up): Approx. –14—+14% | • DTC inspection | —
LPS*2 | (See PID/DATA MONITOR INSPECTION [FN4A-EL])
MAF (Mass air flow) | g/s | • Ignition switch is ON: Approx. 0 g/s • Idling: Approx. 2.7 g/s | • MAF sensor | 2AU
V | • Ignition switch is ON: Approx. 0.7 V • Idling: Approx. 1.3 V
MIL (Malfunction indicator lamp) | On/Off | • Ignition switch is ON: On • Idling: Off | • DTC inspection | —
MIL_DIS (Distance travelled since MIL illuminated) | km, mile | • Distance travelled MIL illuminated | — | —
O2S11 (HO2S voltage) | V | • Ignition switch is ON: 1.0 V or less • Idling (After warm-up): Alternates between 0 and 1.0 V • Acceleration (After warm-up): Alternates between 0.5 and 1.0 V • Deceleration (After warm-up): Alternates between 0 and 0.5 V | • HO2S | 2AI
Rich/Lean | • Acceleration (After warm-up): Rich • Deceleration (After warm-up): Lean
PSP (PSP switch) | High/Low | • Steering wheel is in straight ahead position: Low • Steering wheel is fully turned: High | • PSP switch | 2AC
RFCFLAG (Readiness function code) | Learnt/Not Learnt | • Idling (After running PCM adaptive memory procedure drive mode): Learnt • Right after the negative battery cable is disconnected (Before running PCM adaptive memory procedure drive mode): Not Learnt | • Perform “AFTER REPAIR PROCEDURE”. | —
RPM (Engine speed) | RPM | • Idling (No load): 650—750 RPM | • CKP sensor | 2P
SHRTFT1 (Short term fuel trim) | % | • Idling (After warm-up): –3—+25% | • DTC inspection | —
SPARKADV (Ignition timing) | ° (BTDC) | • During test mode: BTDC 9—11° (BTDC) • Idling: BTDC 6—18° (BTDC) | • Inspect the following monitor items: ― ACSW, ALTT V, VPWR, ECT, KNOCKR, test, TP, RPM, VSS | 2BB
SSA/SS1*2 | (See PID/DATA MONITOR INSPECTION [FN4A-EL].)
SSB/SS2*2 | (See PID/DATA MONITOR INSPECTION [FN4A-EL].)
SSC/SS3*2 | (See PID/DATA MONITOR INSPECTION [FN4A-EL].)
TCS*2 | (See PID/DATA MONITOR INSPECTION [FN4A-EL].)
test (Test mode) | On/Off | • During test mode: On • Other than test mode: Off | — | —
TFT*2 | (See PID/DATA MONITOR INSPECTION [FN4A-EL].)
TFTV*2 | (See PID/DATA MONITOR INSPECTION [FN4A-EL].)
THOP*2 | (See PID/DATA MONITOR INSPECTION [FN4A-EL].)
TP (TP) | % | • CTP: 0% • WOT:100% | • TP sensor | 2AA
V | • CTP: 0.3—1.0 V • WOT: 3.1—4.5 V
TP REL (Throttle position signal (relative value)) | % | • CTP: 0% • WOT: 100% | • TP sensor | 2AA
TPCT (TP sensor voltage at CTP) | V | • 0.3—1.0 V | • TP sensor | 2AA
TR*2 | (See PID/DATA MONITOR INSPECTION [FN4A-EL].)
TR_SENS*2 | (See PID/DATA MONITOR INSPECTION [FN4A-EL].)
TSS*2 | (See PID/DATA MONITOR INSPECTION [FN4A-EL].)
VPWR (Battery positive voltage) | V | • Ignition switch is ON: B+ • Idling: B+ | • Battery • Main relay | 1AX, 1BF, 1BG
VSS (Vehicle speed) | KPH, MPH | • Vehicle is stopped: 0 KPH {0 MPH} • Vehicle speed is 25 km/h: 25 KPH {16 MPH} | • VSS | *11AA, 1AE
*21AY, 1BC
VT DUTY1 (OCV control) | % | • Idling: Approx. 10% | • Inspect the following monitor items: ― ECT, MAF, TP, RPM, VSS | 2AK, 2AG

*1 :MTX
*2 :ATX
*3 :ZY
*4 :With immobilizer system
*5 :Without immobilizer system

Without Using WDS or Equivalent

  Caution
  • The PCM terminal voltages vary with change in measuring conditions and vehicle conditions. Always carry out a total inspection of the input systems, output systems, and PCM to determine the cause of trouble. Otherwise, a wrong diagnosis will be made.

am2zzw00004571

Terminal voltage table (Reference)

Terminal | Signal | Connected to | Test condition | Voltage (V) | Inspection item(s)
--- | --- | --- | --- | --- | ---
1A | — | — | — | — | —
1B | — | — | — | — | —
1C | — | — | — | — | —
1D | — | — | — | — | —
1E | — | — | — | — | —
1F | — | — | — | — | —
1G*1 | GND | Input/turbine speed sensor shield wire | Under any condition | 1.0 or less | • Related harness
1H | — | — | — | — | —
1I | Electric fan control | Cooling fan relay No. 2 | Test mode is on*2 | CTP | B+ | • Cooling fan relay No.2 • Related harness
WOT | 1.0 or less
1J | — | — | — | — | —
1K*1 | Input/turbine speed sensor (–) | Input/turbine speed sensor | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Input/turbine speed sensor • Related harness
1L | — | — | — | — | —
1M | — | — | — | — | —
1N | GND | Evaporator temperature sensor | Under any condition | 1.0 or less | • Related harness
1O*1 | Input/turbine speed sensor (+) | Input/turbine speed sensor | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Input/turbine speed sensor • Related harness
1P*3 | Clutch switch | Clutch switch | Ignition switch is ON | Clutch pedal depressed | 1.0 or less | • Clutch switch • Related harness
Clutch pedal released | Approx. 6.3
1Q | A/C operation | A/C switch, refrigerant pressure switch (Low, high) | Ignition switch is ON | A/C switch is off | Approx. 5.0 | • A/C switch • Refrigerant pressure switch (Low, high) • Related harness
A/C switch and fan switch are on | 1.0 or less
1R | — | — | — | — | —
1S | CAN_L | Instrument cluster, ABS HU/CM, DLC-2 | Because this terminal is for CAN, good/no good determination of terminal voltage is not possible. | —
1T | — | — | — | — | —
1U | Refrigerant pressure (Middle) | Refrigerant pressure switch (Middle) | Idle | Refrigerant pressure is 1.52 MPa {15.5 kgf/cm2, 221 psi} or more | 1.0 or less | • Refrigerant pressure switch (Middle) • Related harness
Refrigerant pressure is 12.3 MPa {125 kgf/cm2, 1783 psi} or less | B+
1V | Brake switch | Brake switch | Brake pedal depressed | B+ | • Brake switch • Related harness
Brake pedal released | 1.0 or less
1W | CAN_H | Instrument cluster, ABS HU/CM, DLC-2 | Because this terminal is for CAN, good/no good determination of terminal voltage is not possible. | —
1X*1 | Selector lever position | TR switch | Ignition switch is ON | P position | Approx. 4.6 | • TR switch • Related harness
R position | Approx. 3.9
N position | Approx. 3.2
D range | Approx. 2.5
S range | Approx. 1.7
L range | Approx. 0.94
1Y | — | — | — | — | —
1Z | Vehicle speed output | Car-navigation unit | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Car-navigation unit • Related harness
1AA*3 | Vehicle speed (–) | VSS | Under any condition | 1.0 or less | • VSS • Related harness
1AB*3 | Neutral switch | Neutral switch | Ignition switch is ON | Neutral | 1.0 or less | • Neutral switch • Related harness
Except above | Approx. 6.3
1AC*6 | Fuel pump control | Fuel pump relay | Ignition switch is ON | B+ | • Fuel pump relay • Related harness
Cranking | 1.0 or less
Idle
1AD | Evaporator temperature | Evaporator temperature sensor | Ignition switch is ON | Evaporator temperature is 20 °C {68 °F} | Approx. 2.5 | • Evaporator temperature sensor • Related harness
1AE*3 | Vehicle speed (+) | VSS | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • VSS • Related harness
1AF*1 | Pressure control solenoid (+) | Pressure control solenoid | Idle | B+ | • Pressure control solenoid • Related harness
1AG*6 | Security light control | Instrument cluster (security light) | Security light illuminates | 1.0 or less | • Instrument cluster • Related harness
Security light does not illuminate | B+
1AH*7 | Fuel pump control | Fuel pump relay | Ignition switch is ON | B+ | • Fuel pump relay • Related harness
Cranking | 1.0 or less
Idle
1AI | — | — | — | — | —
1AJ*1 | Shift solenoid D | Shift solenoid D | P or N position | B+ | • Shift solenoid D • Related harness
Except above | 1.0 or less
1AK*6 | Starter relay control | Starter relay | Cranking | 1.0 or less | • Starter relay • Related harness
1AL | A/C cut-off control | A/C relay | A/C is operating | 1.0 or less | • A/C relay • Related harness
A/C is not operating | B+
1AN*1 | GND | TFT sensor, TR switch | Under any condition | 1.0 or less | • Related harness
1AO*6 | Immobilizer system communication | Coil | Because this terminal is for communication, good/no good determination of terminal voltage is not possible. | —
1AP | — | — | — | — | —
1AQ*1 | HOLD switch | HOLD switch | Ignition switch is ON | HOLD switch pushed | 1.0 or less | • HOLD switch • Related harness
HOLD switch released | B+
1AR*1 | Shift solenoid E | Shift solenoid E | During TCC operation | B+ | • Shift solenoid E • Related harness
Except above | 1.0 or less
1AS*6 | Immobilizer system communication | Coil | Because this terminal is for communication, good/no good determination of terminal voltage is not possible. | —
1AT | Electric fan control | Cooling fan relay No. 1 | Test mode is on*2 | CTP | B+ | • Cooling fan relay No.1 • Related harness
WOT | 1.0 or less
1AU*1 | ATF temperature | TFT sensor | Ignition switch is ON | TFT is 20 °C {68 °F} | Approx. 3.3 | • TFT sensor • Related harness
TFT is 40 °C {104 °F} | Approx. 2.4
TFT is 60 °C {140 °F} | Approx. 1.5
1AV*1 | Pressure control solenoid (–) | Pressure control solenoid | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Pressure control solenoid • Related harness
1AW | Main relay | Main relay | Ignition switch is off | 1.0 or less | • Main relay • Related harness
Ignition switch is ON
1AX | Back-up power supply | Battery | Under any condition | B+ | • Battery • Related harness
1AY*1 | Vehicle speed | VSS | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • VSS • Related harness
1AZ*1 | Shift solenoid A | Shift solenoid A | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Shift solenoid A • Related harness
1BA | ECT output | Climate control unit | Ignition switch is ON | ECT is 20 °C {68 °F} | Approx. 3.0 | • Climate control unit • Related harness
ECT is 60 °C {140 °F} | Approx. 1.4
ECT is 80 °C {176 °F} | Approx. 0.9
1BB | Battery voltage | Main relay | Ignition switch is off | 1.0 or less | • Main relay • Battery • Related harness
Ignition switch is ON | B+
1BC*1 | VSS power supply | VSS | Ignition switch is ON | B+ | • Related harness
1BD*1 | Shift solenoid C | Shift solenoid C | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Shift solenoid C • Related harness
1BE | Ignition switch | Ignition switch | Ignition switch is off | 1.0 or less | • Ignition switch • Related harness
Ignition switch is ON | B+
1BF | Battery voltage | Main relay | Ignition switch is off | 1.0 or less | • Main relay • Battery • Related harness
Ignition switch is ON | B+
1BG*1 | Battery voltage | Main relay | Ignition switch is off | 1.0 or less | • Main relay • Battery • Related harness
Ignition switch is ON | B+
1BH*1 | Shift solenoid B | Shift solenoid B | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Shift solenoid B • Related harness
2A | Ignition coil power supply | Ignition coil | Ignition switch is ON | B+ | • Related harness
2B | Fuel injection control | Fuel injector No.1 | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Fuel injector No.1 • Related harness
2C | Fuel injection control | Fuel injector No.2 | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Fuel injector No.2 • Related harness
2D | Fuel injection control | Fuel injector No.3 | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Fuel injector No.3 • Related harness
2E | Fuel injector No.1 power supply | Fuel injector No.1 | Ignition switch is ON | B+ | • Related harness
2F | Fuel injector No.2 power supply | Fuel injector No.2 | Ignition switch is ON | B+ | • Related harness
2G | Fuel injector No.3 power supply | Fuel injector No.3 | Ignition switch is ON | B+ | • Related harness
2H | Fuel injection control | Fuel injector No.4 | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Fuel injector No.4 • Related harness
2I | — | — | — | — | —
2J | ECT | ECT sensor | Ignition switch is ON | ECT is 20 °C {68 °F} | Approx. 3.0 | • ECT sensor • Related harness
ECT is 60 °C {140 °F} | Approx. 1.4
ECT is 80 °C {176 °F} | Approx. 0.9
2K | — | — | — | — | —
2L | Fuel injector No.4 power supply | Fuel injector No.4 | Ignition switch is ON | B+ | • Related harness
2M | ESA control | Ignition coil No.4 | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Ignition coil No.4 • Related harness
2N | — | — | — | — | —
2O | — | — | — | — | —
2P | CKP | CKP sensor | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • CKP sensor • Related harness
2Q | ESA control | Ignition coil No.3 | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Ignition coil No.3 • Related harness
2R | — | — | — | — | —
2S | — | — | — | — | —
2T | Input/output device power supply | CKP sensor, CMP sensor, HO2S, purge solenoid valve | Ignition switch is ON | B+ | • Related harness
2U | ESA control | Ignition coil No.2 | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Ignition coil No.2 • Related harness
2V | — | — | — | — | —
2W | Constant voltage (Vref) | TP sensor | Ignition switch is ON | Approx. 5.0 | • TP sensor • Related harness
2X | IAC (+) | IAC valve | Idle | B+ | • IAC valve • Related harness
2Y | ESA control | Ignition coil No.1 | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Ignition coil No.1 • Related harness
2Z | — | — | — | — | —
2AA | TP | TP sensor | Ignition switch is ON | CTP | 0.3—1.0 | • TP sensor • Related harness
WOT | 3.1—4.5
2AB | IAC (–) | IAC valve | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • IAC valve • Related harness
2AC | PSP switch | PSP switch | Idle | Steering wheel at straight ahead position | B+ | • PSP switch • Related harness
While turning steering wheel | 1.0 or less
2AD | — | — | — | — | —
2AE | GND | TP sensor | Under any condition | 1.0 or less | • Related harness
2AF | VTCS (Open) | VTCS shutter valve actuator | Engine is hot | When ignition switch is ON. | B+*5 | • VTCS shutter valve actuator • Related harness
Idle after cold start | When the ECT reaches 60 °C {140 °F}
Except above | 1.0 or less
2AG | Variable valve timing control (–) | OCV | Under any condition | 1.0 or less | • OCV • Related harness
2AH | — | — | — | — | —
2AI | Oxygen concentration | HO2S | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • HO2S • Related harness
2AJ | VTCS (Close) | VTCS shutter valve actuator | Engine is cold | When ignition switch is ON. | B+*5 | • VTCS shutter valve actuator • Related harness
Except above | 1.0 or less
2AK | Variable valve timing control (+) | OCV | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • OCV • Related harness
2AL | — | — | — | — | —
2AM | HO2S heater control | HO2S heater | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • HO2S heater • Related harness
2AN | Generator control | Generator (Terminal D) | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Generator • Related harness
2AO*4 | VIS (Open) | VIS shutter valve actuator | When ignition switch is ON. | 1.0 or less | • VIS shutter valve actuator • Related harness
When the engine speed is increased gradually and reaches 4,100 rpm. | B+*5
Except above | 1.0 or less
2AP | — | — | — | — | —
2AQ | IAT | IAT sensor | Ignition switch is ON | IAT is 20 °C {68 °F} | Approx. 2.5 | • IAT sensor • Related harness
IAT is 30 °C {86 °F} | Approx. 1.8
2AR | Generator output voltage | Generator (terminal P) | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Generator • Related harness
2AS*4 | VIS (Close) | VIS shutter valve actuator | When ignition switch is ON. | B+*5 | • VIS shutter valve actuator • Related harness
When the engine speed is decreased gradually and reaches 4,100 rpm.
Except above | 1.0 or less
2AT | — | — | — | — | —
2AU | MAF | MAF sensor | Ignition switch is ON | Approx. 0.7 | • MAF sensor • Related harness
Idle | Approx. 1.3
2AV | Purge control | Purge solenoid valve | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Purge solenoid valve • Related harness
2AW | — | — | — | — | —
2AX | GND | ECT sensor, HO2S | Under any condition | 1.0 or less | • Related harness
2AY | GND | IAT sensor | Under any condition | 1.0 or less | • Related harness
2AZ | GND | GND | Under any condition | 1.0 or less | • Related harness
2BA | Knocking | Knock sensor | Ignition switch is ON (Use digital type voltmeter, because measurement voltage will be detected less than true voltage when using analog type voltmeter) | Approx. 2.4 | • Knock sensor • Related harness
2BB | CMP | CMP sensor | Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • CMP sensor • Related harness
2BC | GND | MAF sensor | Under any condition | 1.0 or less | • Related harness
2BD | GND | GND | Under any condition | 1.0 or less | • Related harness
2BE | GND | HO2S shield wire | Under any condition | 1.0 or less | • Related harness
2BF | GND | CMP sensor | Under any condition | 1.0 or less | • Related harness
2BG | MAF sensor power supply | MAF sensor | Idle | B+ | • Related harness
2BH | GND | GND | Under any condition | 1.0 or less | • Related harness

*1 :ATX
*2 :Turn the test mode on using the WDS simulation test.
*3 :MTX
*4 :ZY
*5 :The voltage changes for a specified time.
*6 :With immobilizer system
*7 :Without immobilizer system

Inspection Using An Oscilloscope (Reference)

Input/turbine speed sensor signal

am2zzw00004572

  PCM terminals

  • 1O (+)—1K (–)

  Oscilloscope setting

  • 2 V/DIV (Y), 2 ms/DIV (X), DC range

  Vehicle condition

  • Idle at P position

Vehicle speed output signal

am2zzw00004573

  PCM terminals

  • 1Z (+)—Negative battery terminal (–)

  Oscilloscope setting

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

  Vehicle condition

  • Vehicle speed is 20 km/h {12 mph}.

Vehicle speed (+) signal (MTX)

am2zzw00004574

  PCM terminals

  • 1AE (+)—Negative battery terminal (–)

  Oscilloscope setting

  • 1 V/DIV (Y), 10 ms/DIV (X), DC range

  Vehicle condition

  • Vehicle speed is 20 km/h {12 mph}.

Pressure control solenoid (–) signal

am2zzw00004785

  PCM terminals

  • 1AV (+)—Negative battery terminal (–)

  Oscilloscope setting

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

  Vehicle condition

  • Idle

Vehicle speed signal (ATX)

am2zzw00004577

  PCM terminals

  • 1AY (+)—Negative battery terminal (–)

  Oscilloscope setting

  • 1 V/DIV (Y), 2.5 ms/DIV (X), DC range

  Vehicle condition

  • Vehicle speed is 32 km/h {20 mph}.

Shift solenoid A signal

am2zzw00004578

  PCM terminals

  • 1AZ (+)—Negative battery terminal (–)

  Oscilloscope setting

  • 5 V/DIV (Y), 5 ms/DIV (X), DC range

  Vehicle condition

  • 4GR

Shift solenoid C signal

am2zzw00004579

  PCM terminals

  • 1BD (+)—Negative battery terminal (–)

  Oscilloscope setting

  • 5 V/DIV (Y), 5 ms/DIV (X), DC range

  Vehicle condition

  • 1GR or 2GR

Shift solenoid B signal

am2zzw00004580

  PCM terminals

  • 1BH (+)—Negative battery terminal (–)

  Oscilloscope setting

  • 5 V/DIV (Y), 5 ms/DIV (X), DC range

  Vehicle condition

  • 1GR (except L range (HOLD))

Fuel injection control signal

am2zzw00004581

  PCM terminals

  • No.1: 2B (+)—Negative battery terminal (–)
  • No.2: 2C (+)—Negative battery terminal (–)
  • No.3: 2D (+)—Negative battery terminal (–)
  • No.4: 2H (+)—Negative battery terminal (–)

  Oscilloscope setting

  • 5 V/DIV (Y), 10 ms/DIV (X), DC range

  Vehicle condition

  • Idle after warm-up

ESA control signal

am2zzw00004582

  PCM terminals

  • No.1: 2Y (+)—Negative battery terminal (–)
  • No.2: 2U (+)—Negative battery terminal (–)
  • No.3: 2Q (+)—Negative battery terminal (–)
  • No.4: 2M (+)—Negative battery terminal (–)

  Oscilloscope setting

  • 0.5 V/DIV (Y), 40 ms/DIV (X), DC range

  Vehicle condition

  • Idle after warm-up

CKP signal

am2zzw00004583

  PCM terminals

  • 2P (+)—Negative battery terminal (–)

  Oscilloscope setting

  • 1 V/DIV (Y), 10 ms/DIV (X), DC range

  Vehicle condition

  • Idle after warm-up

IAC (–) signal

am2zzw00004584

  PCM terminals

  • 2AB (+)—Negative battery terminal (–)

  Oscilloscope setting

  • 2 V/DIV (Y), 2 ms/DIV (X), DC range

  Vehicle condition

  • Idle after warm-up

Oxygen concentration signal

am2zzw00004585

  PCM terminals

  • 2AI (+)—Negative battery terminal (–)

  Oscilloscope setting

  • 0.2 V/DIV (Y), 1 s/DIV (X), DC range

  Vehicle condition

  • Idle after warm-up

Variable valve timing control (+) signal

am2zzw00004586

  PCM terminals

  • 2AK (+)—Negative battery terminal (–)

  Oscilloscope setting

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

  Vehicle condition

  • Idle after warm-up

HO2S heater signal

am2zzw00004587

  PCM terminals

  • 2AM (+)—Negative battery terminal (–)

  Oscilloscope setting

  • 2 V/DIV (Y), 0.1 s/DIV (X), DC range

  Vehicle condition

  • Idle after warm-up

Generator control signal

am2zzw00004588

  PCM terminals

  • 2AN (+)—Negative battery terminal (–)

  Oscilloscope setting

  • 0.5 V/DIV (Y), 1 ms/DIV (X), DC range

  Vehicle condition

  • Idle after warm-up

Generator output voltage signal

am2zzw00004589

  PCM terminals

  • 2AR (+)—Negative battery terminal (–)

  Oscilloscope setting

  • 2 V/DIV (Y), 1 ms/DIV (X), DC range

  Vehicle condition

  • Idle after warm-up

Purge control signal

am2zzw00004590

  PCM terminals

  • 2AV (+)—Negative battery terminal (–)

  Oscilloscope setting

  • 2 V/DIV (Y), 0.1 s/DIV (X), DC range

  Vehicle condition

  • Idle after warm-up

CMP signal

am2zzw00004591

  PCM terminals

  • 2BB (+)—Negative battery terminal (–)

  Oscilloscope setting

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

  Vehicle condition

  • Idle after warm-up