#
PCM INSPECTION [L8, LF, L3]

id0140a5802500

## Using SST (WDS or equivalent)

  Note

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

  - CMP sensor
  - Main relay

1. Connect the SST (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 Action column.

  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 out of specification, inspect the monitored value of the input device related to the output control.
  • For input/output signals except those of the monitoring items, use a voltmeter to measure the PCM terminal voltage.
  • The simulation items that are used in the ENGINE CONTROL SYSTEM OPERATION INSPECTION are as follows.

  - ACCS, ALTF, EVAPCP, FAN1, FAN2, FAN3, FP, HTR11, HTR12, IAC, IASV, IMRC, IMTV, VT DUTY1

PID/DATA monitor table (reference)

Monitor item (Definition) | Unit/Condition | Condition/Specification (Reference) | Action | PCM terminal
--- | --- | --- | --- | ---
AC_REQ (A/C request signal) | ON/OFF | A/C switch and fan switch ON at ignition switch ON: On A/C switch OFF at ignition switch ON: Off | Inspect A/C switch. | 1AU
ACCS (A/C relay) | ON/OFF | Ignition switch ON: OFF A/C switch ON and fan switch ON at idle: ON | Inspect following PIDs: RPM, TP, ECT, ACSW, TR. Inspect A/C relay. | 1I
ALTF (Generator field coil control duty value) | % | Ignition switch ON: 0% Idle: 0-100% Just after A/C switch ON and fan switch ON at idle: Duty value rises | Inspect following PIDs: IAT, ECT, RPM, VPWR, ALTT V. Inspect generator. | 2AI
ALTT V (Generator output voltage) | V | Ignition switch ON: 0 V Idle: Approx. 14.9 V*1 (E/L not operating) | Inspect generator. | 2AJ
APP (Accelerator pedal position) | % | APP released: 0% APP open: 100% | Inspect following PIDs: APP1, APP2. Inspect accelerator pedal position sensor. | 1AO 1AP
APP 1 (Accelerator pedal position sensor 1) | % | APP released: 31.0-32.4% APP open: 69.8-81.8% | Inspect accelerator pedal position sensor. | 1AO
V | APP released: 1.55-1.62 V APP depressed: 3.49-4.09 V
APP 2 (Accelerator pedal position sensor 2) | % | APP released: 20.2-21.4% APP depressed: 58.8-70.8% | Inspect accelerator pedal position sensor. | 1AP
V | APP released: 1.01-1.07 V APP depressed: 2.94-3.54 V
ARPMDES (Target engine speed) | RPM | L8 No load: 700 rpm E/L operating: 700 rpm P/S operating: 750 rpm A/C ON: 750 rpm LF ATX No load: 700 rpm E/L operating: 700 rpm P/S operating: 700 rpm A/C ON: 750 rpm*2, 700 rpm*3 LF MTX, L3 No load: 650 rpm E/L operating: 700 rpm P/S operating: 700 rpm A/C ON: 750 rpm | Inspect following PIDs: IAT, RPM, MAP, ECT, MAF, TP, INGEAR, ACSW, TR, PSP, ALTT V. Inspect IAC valve. Inspect CKP sensor. | -
B+ (Battery positive voltage) | V | Ignition switch ON: B+ | Inspect main relay. Inspect battery. | 1BA
BOO (Brake switch) | ON/OFF | Brake pedal depressed: ON Brake pedal released: OFF | Inspect brake switch. | 1AB 1AF
BPA (Brake pressure applied switch) | ON/OFF | Brake pedal depressed: ON Brake pedal released: OFF | Inspect brake switch. | -
CATT11_DSD (Desired catalyst temperature bank one, sensor one) | °C | Indicate the estimated catalytic converter temperature | Perform applicable DTC troubleshooting. (See DTC TABLE [L8, LF, L3]) | -
CHRGLP (Generator warning light) | ON/OFF | Ignition switch ON: ON Idle: OFF | Perform applicable DTC troubleshooting. (See DTC TABLE [L8, LF, L3].) | -
COLP (Refrigerant pressure switch (middle)) | ON/OFF | Refrigerant pressure switch (middle) ON *1 at idle: ON Refrigerant pressure switch (middle) OFF*2 at idle: OFF | Inspect refrigerant pressure switch. | 1J
CPP*6 (Clutch pedal position) | ON/OFF | Clutch pedal depressed: ON Clutch pedal released: OFF | Inspect clutch pedal position switch. | 1D
CPP/PNP*6 (Shift lever position) | Drive/Neutral | Neutral position: Neutral Others: Drive | Inspect neutral switch. | 1X
DTCCNT (Number of DTC detected) | - | - | Perform applicable DTC troubleshooting. (See DTC TABLE [L8, LF, L3].) | -
ECT (Engine coolant temperature) | °C | °F | ECT 20 °C {68 °F}: 20 °C {68 °F} ECT 60 °C {140 °F}: 60 °C {140 °F} | Inspect ECT sensor. | 2AH
V | ECT 20 °C {68 °F}: 3.04-3.14 V ECT 60 °C {140 °F}: 1.29-1.39 V
EQ_RAT11 (Equivalence ratio (lambda)) | - | Idling after warm-up: Approx. 1 | Perform applicable DTC troubleshooting. (See DTC TABLE [L8, LF, L3].) | 2Z 2AC 2AD
EQ_RAT11_DSD (Desired equivalence ratio (lambda)) | - | Idling after warm-up: Approx. 1 | Perform applicable DTC troubleshooting. (See DTC TABLE [L8, LF, L3].) | 2Z 2AC 2AD
ETC_ACT (Electronic throttle control actual) | ° | Indicate the desired TP by angle | Perform applicable DTC troubleshooting. (See DTC TABLE [L8, LF, L3].) | 2AL 2AK
ETC_DSD (Electronic throttle control desired) | % | Indicate the desired TP by percent | Inspect following PIDs:APP1, APP2, ETC_ACT. Inspect TP sensor. | 1AO 1AP
° | Indicate the desired TP by angle
EVAPCP (Purge solenoid valve duty value) | % | Ignition switch ON: 0% Idle: 0% | Inspect following PIDs: IAT, RPM, ECT, MAF, O2S11, INGEAR, TR, VPWR. | 2C
FAN1 (Cooling fan control) | ON/OFF | ECT below 100 °C {212 °F}: OFF Others: ON | Inspect following PIDs: RPM, TP, ECT, ACSW, COLP, TEST. Inspect cooling fan relay. | 1M
FAN2 (Cooling fan control) | ON/OFF | ECT below 108 °C {226 °F}: OFF A/C operating, refrigerant pressure switch (middle) is OFF, and ECT below 108 °C {226 °F}: OFF Others: ON | Inspect following PIDs: RPM, TP, ECT, ACSW, COLP, TEST. Inspect cooling fan relay. | 1R
FAN3 (Cooling fan control) | ON/OFF | ECT below 100 °C {212 °F}: OFF A/C operating, refrigerant pressure switch (middle) is ON, and ECT below 108 °C {226 °F}: OFF Other: ON | Inspect following PIDs: RPM, TP, ECT, ACSW, COLP, TEST. Inspect cooling fan relay. | 1R
FP (Fuel pump relay) | ON/OFF | Ignition switch ON: OFF Idle: ON Cranking: ON | Inspect following PIDs: RPM. Inspect fuel pump relay. | 1H*7 1Q*8
FUELPW (Fuel injector duration) | ms | Ignition switch ON: 0 ms Idle (after warm up): approx. 2.5 ms | Inspect following PIDs: IAT, MAF, TP, MAP, ECT, RPM, O2S11, O2S12, INGEAR, TR, PSP, ACSW, VPWR, ALTT V. Inspect fuel injector. | 2AZ 2BB 2BC 2BD
FUELSYS (Fuel system status) | Open loop/Closed loop | Ignition switch ON: Open loop Idle (after warm up): Closed loop | Inspect following PIDs: IAT, MAF, TP, MAP, ECT, RPM, O2S11, O2S12, INGEAR, TR, PSP, ACSW, VPWR, ALTT V. Inspect fuel injector. | -
GENVDSD (Generator voltage desired) | V | Ignition switch ON: 0 V Idle: Approx. 14.9 V (E/L not operating) | Perform applicable DTC troubleshooting. (See DTC TABLE [L8, LF, L3].) | -
HTR11 (A/F sensor heater) | ON/OFF | Idle (after warm up): ON⇔OFF | Inspect following PIDs: IAT, MAF, TP, ECT, RPM, ACSW. | 2BG
HTR12 (HO2S heater) | ON/OFF | Ignition switch ON: OFF (HO2S heater not operating) Idle: ON (HO2S heater operating) | Inspect following PIDs: IAT, MAF, ECT, RPM, ACSW. | 2BE
IASV*4 (Variable air duct control solenoid valve) | ON/OFF | ECT is above 70 °C {158 °F}, engine speed is above 5,800 rpm, and TP opening angle is above 50%: ON Others: OFF | Inspect following PIDs: ECT, RPM, TP. Inspect VAD solenoid valve. | 1K
IAT (Intake air temperature) | °C | °F | Indicate the IAT. | Inspect IAT sensor. | 1AT
V | IAT 0 °C {32 °F}: Approx. 3.43 V IAT 20 °C {68 °F}: Approx. 2.38 V IAT 40 °C {104 °F}: Approx. 1.49 V
IMRC (Variable tumble solenoid valve) | ON/OFF | Engine speed is below approx. 3,750 rpm: ON Others: OFF | Inspect following PIDs: TP, ECT, RPM. Inspect variable tumble solenoid valve. | 2I
IMTV*5 (Variable Intake-air control solenoid valve) | ON/OFF | Engine speed is below approx. 4,500 rpm: ON Others: OFF | Inspect following PIDs: RPM. Inspect VIS control solenoid valve. | 2J
INGEAR*6 (Load/no load condition) | ON/OFF | CPP or CPP/PNP is ON: OFF Others: ON | Perform applicable DTC troubleshooting. | 1D 1X
IVS (CTP condition) | IDLE/ OFF IDLE | CTP: IDLE Others: OFF IDLE | Perform applicable DTC troubleshooting. | 1AJ 1AO
KNOCKR (Knocking retard) | ° | Ignition switch ON: 0° Idle: 0° | Inspect knock sensor. | 2U 2V
LOAD (Engine load) | % | Ignition switch ON: 0% Idle (after warm up): approx.19% | Inspect MAF sensor. | -
LONGFT1 (long term fuel trim) | % | Idle (after warm up): approx. -14-14% | Perform applicable DTC troubleshooting. (See DTC TABLE [L8, LF, L3].) | -
MAF (Mass airflow) | g/s | Ignition switch ON: approx. 0 g/s Idle (after warm up): approx. 1.5 g/s | Inspect MAF sensor. | 1AK
V | Ignition switch ON: approx. 0.7 V Idle (after warm up): approx. 1.3 V
MAP (Manifold absolute pressure) | kPa, inHg | Ignition switch ON (at sea level): approx. 101 kPa {29.8 inHg} | Inspect MAP sensor. | 2AG
V | Ignition switch ON (at sea level): approx. 4.1 V
MIL (Malfunction indicator lamp) | ON/OFF | Ignition switch ON: ON Idle: OFF | Perform applicable DTC troubleshooting. (See DTC TABLE [L8, LF, L3].) | -
MIL_DIS (Travelled distance since the MIL illuminated) | km, mile | No DTC: 0 km {0 mile} DTC detected: Not 0 km {0 mile} | Perform applicable DTC troubleshooting. (See DTC TABLE [L8, LF, L3].) | -
NUMKEYS (Number of keys stored in module) | - | Indicate the number of the keys stored module | - | -
O2S11 (A/F sensor) | A | Ignition switch ON: -1.0-1.0 A Idle (After warm up): 0.25 A more | A/F sensor | 2Z 2AC 2AD
O2S12 (HO2S) | V | Idle (After warm up): approx. 0.6 V | Inspect HO2S. | 2Q
Rich/Lean | Idle (After warm up): Rich
PSP (Power steering pressure switch) | Low/High | Steering wheel in straight ahead position: Low Others: High | Inspect PSP switch. | 2T
RFCFLAG (Readness function code) | Learnt/Not Learnt | Before running PCM adaptive memory procedure drive mode: Not Learnt After running PCM adaptive memory procedure drive mode: Learnt | Run PCM adaptive memory procedure drive mode. | -
RO2FT1 (HO2S fuel trim) | - | Idle (after warm up): approx. -0.03-0.03 | Perform applicable DTC troubleshooting. | -
RPM (Engine speed) | rpm | Indicate the engine speed | Inspect CKP sensor. | 2W
SCCS (Speed control command switch) | V | Press ON/OFF: Approx. 0 V Press CANCEL: Approx. 1.2 V Press SET/COAST: Approx. 3.2 V Press RES/ACCEL: Approx. 4.2 V Others: Approx. 5.0 V | Inspect cruise control switch. | -
SEGRP (EGR valve (stepping motor) position) | Step | Ignition switch ON: 0 step Idle: 0 step Cranking: 0-60 steps | Inspect following PIDs: MAF, TP, ECT, RPM, VSS. Inspect EGR valve. | 2G 2H 2K 2L
SEGRP DSD (Desired SEGRP valve position) | % | Idle: 0% | Inspect following PIDs: MAF, TP, ECT, RPM, VSS. | 2G 2H 2K 2L
SELTESTDTC (Diagnostic trouble codes) | - | - | Perform applicable DTC troubleshooting. (See DTC TABLE [L8, LF, L3].) | -
SHRTFT1 (Short term fuel trim) | % | Idle (after warm up): approx.-30-25% | Perform applicable DTC troubleshooting. (See DTC TABLE [L8, LF, L3].) | -
SHRTFT12 (Short term fuel trim bank 1 sensor 2) | % | Idle (after warm up): Approx.-30-25% | Perform applicable DTC troubleshooting. (See DTC TABLE [L8, LF, L3].) | -
SPARKADV (Ignition timing) | ° | Ignition switch ON: BTDC 0° Idle: BTDC approx. 10° | Inspect following PIDs: MAF, TP, ECT, RPM, INGEAR, TR, PSP, ACSW, VPWR. Inspect ignition timing. | 2AT 2AW 2AX 2BA
TEST (Test mode) | ON/OFF | - | - | -
TIRESIZE (Tire Size (rev / mile)) | rev/mile | Indicate the tire circumference length | - | -
TP REL (Relative throttle position) | % | APP released: Approx. 10% APP depressed: Approx. 93% | Inspect TP sensor. | -
TP 1 (TP) | % | APP released: 8-12% APP depressed: 88-94% | Inspect TP sensor. | 2AK
V | APP released: 0.4-0.6 V APP depressed: 4.4-4.7 V
TP 2 (TP) | % | APP released: 88-92% APP depressed: 6-12% | Inspect TP sensor. | 2AL
V | APP released: 4.4-4.6 V APP depressed: 0.3-0.6 V
TPCT (TP sensor voltage at CTP) | V | Approx. 0.5 V | Inspect TP sensor. | 2AK 2AL
VSS (Vehicle speed) | kph, mph | Vehicle speed 20 kph {12 mph}: 20 kph {12 mph} Vehicle speed 40 kph {25 mph}: 20 kph {12 mph} | Perform applicable DTC troubleshooting. (See DTC TABLE [L8, LF, L3].) | -
VT ACT1 (Actual valve timing) | ° | Idle: Approx. 0° | Inspect following PIDs: TP, ECT, RPM. Inspect OCV. | 2E
VT DIFF1 (Difference between target and actual valve timing) | ° | Idle: Approx. 0° | Inspect following PIDs: TP, ECT, RPM. Inspect OCV. | 2E
VT DUTY1 (Oil control valve duty value) | % | Idle: Approx. 11.5% | Inspect following PIDs: TP, ECT, RPM. Inspect OCV. | 2E

  *1 :
Calculated value; differs from terminal voltage
  *2 :
Refrigerant pressure switch (middle) turns on when the refrigerant pressure is 1.69-1.84 MPa {17.3-18.7 kgf/cm2, 247-265 psi}
  *3 :
Refrigerant pressure switch (middle) turns off when the refrigerant pressure is 1.26-1.49 MPa {12.9-15.1 kgf/cm2, 184-214 psi}
  *4 :
LF, L3
  *5 :
L3
  *6 :
MTX
  *7 :
With immobilizer sysetem
  *8 :
Without immobilizer sysetem

• Following PIDs are for the ATX models. If inspects for following PIDs, (See PID/DATA MONITOR INSPECTION [JA5AX-EL].)

## Without Using the SST

  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.

1. Measure the voltage at each terminal.

  • If any incorrect voltage is detected, inspect the related system(s), wiring harnesses and connector(s) referring to the Action column in the terminal voltage table.

### Terminal voltage table (Reference)

Terminal | Signal | Connected to | Test condition | Voltage (V) | inspection item
--- | --- | --- | --- | --- | ---
1A | Security light control*1 | Security light | IG SW ON | Approx. 11.3 | • Related wiring harness
1B | Starter relay control*1 | Starter relay | Under any condition | Below 1.0 | • Starter relay • Related harness
1C | - | - | - | - | -
1D | Clutch operation*2 | CPP switch | Clutch pedal depressed | Below 1.0 | • CPP switch • Related harness
Clutch pedal released | B+
1E | Coil (Immobilizer system)*1 | Coil | Because this terminal is for communication, good/no good judgment by terminal voltage is not possible. | • Coil • Related harness
1F | Coil (Immobilizer system)*1 | Coil | Because this terminal is for communication, good/no good judgment by terminal voltage is not possible. | • Coil • Related harness
1G | Fuel pump control*3 | Fuel pump relay | Ignition switch ON | B+ | • Fuel pump relay • Related harness
Cranking | Below 1.0
Idle | Below 1.0
1H | Fuel pump control*1 | Fuel pump relay | Ignition switch ON | B+ | • Fuel pump relay • Related harness
Cranking | Below 1.0
Idle | Below 1.0
1I | A/C | A/C relay | A/C operating | Below 1.0 | • A/C
A/C not operating | B+
1J | A/C compressor load | Refrigerant pressure switch (middle) | A/C ON | Refrigerant pressure is above 1.52 MPa {15.5 kgf/cm2, 220 psi} | Below 1.0 | • Refrigerant pressure switch • Related harness
Refrigerant pressure is below 1.23 MPa {12.5 kgf/cm2, 178 psi} | B+
1K | VAD control*4 | VAD solenoid valve | Idle after warm up | Engine speed below 5,800 rpm | B+ | • VAD solenoid valve • Related harness
Engine speed above 5,800 rpm | Below 1.0
1L | - | - | - | - | -
1M | Cooling fan control (Main) | Cooling fan relay No.1 | Idling | ECT below 100 °C {212 °F} | B+ | • Cooling fan relay • Related harness
A/C operating | Below 1.0
1N | Cooling fan control (Add)*5 | Cooling fan relay No.2 or No.4 | Idling | ECT below 100 °C {212 °F} | B+ | • Cooling fan relay • Related harness
A/C operating | Below 1.0
1O | - | - | - | - | -
1P | MAF sensor GND | MAF/IAT sensor | Under any condition | Below 1.0 | • Related harness
1Q | Main relay control | Main relay | Ignition switch OFF | B+ | • Main relay • Related harness
Ignition switch ON | Below 1.0
1R | Cooling fan control (Transfer) | Cooling fan relay No.2 or No.3 | Idling | ECT below 100 °C {212 °F} | B+ | • Cooling fan relay • Related harness
A/C operating | Below 1.0
1S | - | - | - | - | -
1T | - | - | - | - | -
1U | - | - | - | - | -
1V | - | - | - | - | -
1W | - | - | - | - | -
1X | Neutral position*2 | Neutral switch | Shift lever is at neutral position | Below 1.0 | • Neutral switch • Related harness
Shift lever is not at neutral position | B+
1Y | - | - | - | - | -
1Z | - | - | - | - | -
1AA | - | - | - | - | -
1AB | Brake1 | Brake switch | Brake pedal depressed | B+ | • Brake switch • Related harness
Brake pedal released | Below 1.0
1AC | - | - | - | - | -
1AD | - | - | - | - | -
1AE | - | - | - | - | -
1AF | Brake2 | Brake switch | Brake pedal depressed | B+ | • Brake switch • Related harness
Brake pedal released | Below 1.0
1AG | - | - | - | - | -
1AH | - | - | - | - | -
1AI | CAN (-) | Instrument cluster, ABS/TCS HU/CM, TCM | Because this terminal is for CAN, good/no good judgment by terminal voltage is not possible. | • Related harness
1AJ | Constant voltage (Vref) | APP sensor | Ignition switch ON | Approx. 5.0 | • Related harness
1AK | MAF | MAF sensor | Ignition switch ON | Approx. 0.7 | • MAF sensor • Related harness
Idle (after warm up) | MTX | 1.15-1.28
ATX | 1.18-1.31
1AL | Constant voltage (Vref) | APP sensor | Ignition switch ON | Approx. 5.0 | • Related harness
1AM | CAN (H) | Instrument cluster, ABS HU/CM, TCM | Because this terminal is for CAN, good/no good judgment by terminal voltage is not possible. | • Related wiring harness
1AN | - | - | - | - | -
1AO | APP sensor 1 | APP sensor | IG SW ON | APP released | 1.55-1.62 | • APP sensor • Related wiring harness
APP depressed | 3.49-4.09
1AP | APP sensor 2 | APP sensor | IG SW ON | APP released | 1.01-1.07 | • APP sensor • Related wiring harness
APP depressed | 2.94-3.54
1AQ | Cruise control switch*6 | Cruise control switch | IG SW ON | Depressing ON/OFF | Approx. 0 | • Cruise control switch • Related wiring harnesses
Depressing CANCEL | Approx. 1.2
Depressing SET/COAST | Approx. 3.2
Depressing Res/ACCEL | Approx. 4.2
Others | Approx. 5.0
1AR | IAT sensor GND | MAF/IAT sensor | Under any condition | Below 1.0 | • Related harness
1AS | APP sensor GND | APP sensor | Under any condition | Below 1.0 | • Related harness
1AT | IAT | MAF/IAT sensor | IG SW ON | IAT 0 °C {32 °F} | Approx. 3.43 | • MAF/IAT sensor • Related wiring harness
IAT 20 °C {68 °F} | Approx. 2.38
IAT 40 °C {104 °F} | Approx. 1.49
IAT 60 °C {140 °F} | Approx. 0.89
IAT 80 °C {176 °F} | Approx. 0.53
IAT 100 °C {212 °F} | Approx. 0.33
1AU | A/C | A/C relay | Idle | A/C operating | Below 1.0 | • A/C relay • Related wiring harness
A/C not operating | B+
1AV | APP sensor GND | APP sensor | Under any condition | Below 1.0 | • Related harness
1AW | - | - | - | - | -
1AX | Throttle actuator control power supply | Drive-by-wire relay | Ignition switch OFF (after 90 s) | Below 1.0 | • Drive-by-wire relay • Related harness
Ignition switch ON | B+
1AY | Ignition switch (IG1) | Ignition switch | Ignition switch OFF | Below 1.0 | • Ignition switch • Related harness
Ignition switch ON | B+
1AZ | GND | Ground | Under any condition | Below 1.0 | • Related harness
1BA | Back-up power supply | Battery (positive terminal) | Under any condition | B+ | • Battery • Related wiring harness
1BB | GND | Ground | Under any condition | Below 1.0 | • Related harness
1BC | Sensor GND | HO2S | Under any condition | Below 1.0 | • Related harness
1BD | GND | Ground | Under any condition | Below 1.0 | • Related harness
1BE | Main relay control | Main relay | Ignition switch OFF | Below 1.0 | • Main relay • Related harness
Ignition switch ON | B+
1BF | Throttle actuator control power supply | Drive-by-wire relay | Ignition switch OFF (after 90 s) | Below 1.0 | • Drive-by-wire relay • Related harness
Ignition switch ON | B+
1BG | - | - | - | - | -
1BH | GND | Ground | Under any condition | Below 1.0 | • Related harness
2A | Throttle actuator control (+) | Throttle body | Ignition switch ON | B+ | • Throttle actuator • Related harness
2B | Throttle actuator control (-) | Throttle body | Idle (after warm up) | 3.5-5.5 | • Throttle actuator • Related harness
2C | Purge control | Purge solenoid valve | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Purge solenoid valve • Related harness
2D | - | - | - | - | -
2E | OCV control | OCV | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • OCV valve • Related harness
2F | - | - | - | - | -
2G | EGR valve #2 coil control | EGR valve (terminal A) | Ignition switch ON | B+ | • EGR valve • Related harness
Idle | B+
2H | EGR valve #4 coil control | EGR valve (terminal F) | Ignition switch ON | Below 1.0 | • EGR valve • Related harness
Idle | Below 1.0
2I | Variable tumble control | Variable tumble solenoid valve | ECT above 62 °C {144 °F} while idling. | B+ | • Variable tumble solenoid valve • Related harness
ECT below 62 °C {144 °F} and engine speed below 3,750 rpm | Below 1.0
2J | Variable intake air control | Variable intake air solenoid valve | Engine speed: above 4,500 rpm | B+ | • Variable intake air solenoid valve • Related harness
Engine speed: below 4,500 rpm | Below 1.0
2K | EGR valve #1 coil control | EGR valve (terminal E) | Ignition switch ON | Below 1.0 | • EGR valve • Related harness
Idle | Below 1.0
2L | EGR valve #3 coil control | EGR valve (terminal B) | Ignition switch ON | B+ | • EGR valve • Related harness
Idle | B+
2M | VSS (-)*7 | VSS | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • VSS sensor • Related harness
2N | VSS (+)*7 | VSS | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • VSS sensor • Related harness
2O | - | - | - | - | -
2P | - | - | - | - | -
2Q | HO2S | HO2S | Ignition switch ON | Approx. 0 | • HO2S • Related harness
Idle (after warm up) | 0⇔1.0
2R | - | - | - | - | -
2S | CMP signal | CMP sensor | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • CMP sensor • Related harness
2T | PSP | PSP switch | Idle | Steering wheel at straight ahead position | B+ | • PSP switch • Power steering system • Related harness
While turning steering wheel | Below 1.0
2U | Knocking (+) | Knock sensor | Ignition switch ON (Use digital type voltmeter, because measurement voltage will be detected less than true voltage when using analog type voltmeter) | Approx. 4.3 | • Perform "On-Board Diagnostic Test" • Related harness
2V | Knocking (-) | Knock sensor | Ignition switch ON (Use digital type voltmeter, because measurement voltage will be detected less than true voltage when using analog type voltmeter) | Below 1.0 | • Perform "On-Board Diagnostic Test" • Related harness
2W | CKP signal | CKP sensor | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • CKP sensor • Related harness
2X | A/F sensor shield | A/F sensor | Under any condition | Below 1.0 | • Related harness
2Y | A/F sensor | A/F sensor | Ignition switch ON | Below 1.0 | • A/F sensor • Related harness
Idle (after warm up) | Approx. 1.0
2Z | A/F sensor | A/F sensor | Ignition switch ON | Approx. 6.19 | • A/F sensor • Related harness
Ignition switch OFF (after 90 s) | Below 1.0
Idle (after warm up) | Approx. 4.1
2AA | - | - | - | - | -
2AB | - | - | - | - | -
2AC | A/F sensor | A/F sensor | Idle (after warm up): Approx. 0 mA | - | • A/F sensor • Related harness
2AD | A/F sensor | A/F sensor | • Verify that the voltage increases when the engine speed increases. | • A/F sensor • Related harness
2AE | - | - | - | - | -
2AF | - | - | - | - | -
2AG | Manifold absolute pressure | MAP sensor | Ignition switch ON (Engine OFF) at sea level | Approx. 4.1 | • MAP sensor • Related harness
2AH | ECT | ECT sensor | IG SW ON | IAT 20 °C {68 °F} | 3.04-3.14 | • ECT sensor • Related wiring harness
IAT 40 °C {104 °F} | 2.09-2.21
IAT 60 °C {140 °F} | 1.29-1.39
IAT 80 °C {176 °F} | 0.76-0.83
IAT 100 °C {212 °F} | 0.45-0.49
2AI | Generator field coil control | Generator (terminal D) | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Following PIDs: IAT, ECT, RPM, VPWR, ALTT V • Generator • Related wiring harness
2AJ | Generator output voltage | Generator (terminal P) | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Generator • Related wiring harness
2AK | TP (No. 1) | TP sensor No. 1 | Ignition switch ON | APP released | 0.4-0.6 | • TP sensor • Related wiring harness
APP depressed | 4.4-4.7
2AL | TP (No. 2) | TP sensor No. 2 | Ignition switch ON | APP released | 4.4-4.6 | • TP sensor • Related wiring harness
APP depressed | 0.3-0.6
2AM | CMP power | CMP sensor | Ignition switch ON | B+ | • CMP sensor • Related harness
Ignition switch OFF (after 90 s) | Below 1.0
2AN | - | - | - | - | -
2AO | Constant voltage (Vref) | TP sensor | Under any condition | Approx. 5.0 | • TP sensor • Related wiring harness
2AP | TP sensor GND | TP sensor | Ignition switch ON | Below 1.0 | • TP sensor • Related wiring harness
2AQ | CKP power | CKP sensor | Ignition switch ON | B+ | • CKP sensor • Related wiring harness
Ignition switch OFF | Below 1.0
2AR | - | - | - | - | -
2AS | Sensor GND | A/F sensor | Under any condition | Below 1.0 | • Related harness
2AT | IGT4 | Ignition coil (No.4 cylinder) | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Ignition coil • Related wiring harness
2AU | Constant voltage (Vref) | MAP sensor | Ignition switch ON | Approx. 5.0 | • Related harness
2AV | - | - | - | - | -
2AW | IGT2 | Ignition coil (No.2 cylinder) | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Ignition coil • Related wiring harness
2AX | IGT3 | Ignition coil (No.3 cylinder) | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Ignition coil • Related wiring harness
2AY | Sensor GND | ECT sensor, MAP sensor | Under any condition | Below 1.0 | • Related harness
2AZ | Fuel injection (#4) | Fuel injector No.4 | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Fuel injector No.4 • Related harness
2BA | IGT1 | Ignition coil (No.1 cylinder) | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Ignition coil • Related wiring harness
2BB | Fuel injection (#1) | Fuel injector No.1 | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Fuel injector No.1 • Related harness
2BC | Fuel injection (#2) | Fuel injector No.2 | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Fuel injector No.2 • Related harness
2BD | Fuel injection (#3) | Fuel injector No.3 | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Fuel injector No.3 • Related harness
2BE | HO2S heater control | HO2S heater | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • HO2S heater • Related harness
2BF | - | - | - | - | -
2BG | A/F sensor heater control | A/F sensor heater | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • A/F sensor heater • Related harness
2BH | - | - | - | - | -

  *1 :
Immobilizer system equipped
  *2 :
MTX
  *3 :
Immobilizer system not equipped
  *4 :
L3
  *5 :
L8, LF, and L3 (intensely hot area)
  *6 :
Cruise control switch equipped
  *7 :
MTX, without ABS/DSC

## Inspection Using An Oscilloscope (Reference)

### VSS signal

PCM terminals

  • 2M, 2N(+)-body ground(-)

Oscilloscope setting

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

Vehicle condition

  • Drive the vehicle with approx. 10 km/h {6.2 mph}

### Purge control signal

PCM terminals

  • 2C(+)-body ground(-)

Oscilloscope setting

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

Vehicle condition

  • Idle after warm up (no load, P/S off, A/C off)

### OCV control signal

PCM terminals

  • 2E(+)-body ground(-)

Oscilloscope setting

  • 2 V/DIV (Y), 0.8 ms/DIV (X), DC range

Vehicle condition

  • Idle after warm up (no load, P/S off, A/C off)

### CMP sensor signal

PCM terminals

  • 2S(+)-body ground(-)

Oscilloscope setting

  • 2 V/DIV (Y), 25 ms/DIV (X), DC range

Vehicle condition

  • Idle after warm up (no load, P/S off, A/C off)

### CKP sensor signal

PCM terminals

  • 2W(+)-body ground(-)

Oscilloscope setting

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

Vehicle condition

  • Idle after warm up (no load, P/S off, A/C off)

### Generator field coil control signal

PCM terminals

  • 2AI(+)-body ground(-)

Oscilloscope setting

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

Vehicle condition

  • Idle after warm up (no load, P/S off, A/C off)

### Generator output voltage signal

PCM terminals

  • 2AJ(+)-body ground(-)

Oscilloscope setting

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

Vehicle condition

  • Idle after warm up (no load, P/S off, A/C off)

### IGT1, IGT2, IGT3, IGT4 control signals

PCM terminals

  • IGT1(ignition coil No.1): 2BA(+)-body ground(-)
  • IGT2(ignition coil No.2): 2AW(+)-body ground(-)
  • IGT3(ignition coil No.3): 2AX(+)-body ground(-)
  • IGT4(ignition coil No.4): 2AT(+)-body ground(-)

Oscilloscope setting

  • 4 V/DIV (Y), 0.01 ms/DIV (X), DC range

Vehicle condition

  • Idle after warm up (no load, P/S off, A/C off)

### Fuel injection control

PCM terminals

  • Fuel Injection No.1: 2BB(+)-body ground(-)
  • Fuel Injection No.2: 2BC(+)-body ground(-)
  • Fuel Injection No.3: 2BD(+)-body ground(-)
  • Fuel Injection No.4: 2AZ(+)-body ground(-)

Oscilloscope setting

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

Vehicle condition

  • Idle after warm up (no load, P/S off, A/C off)

### HO2S heater control

PCM terminals

  • 2BE(+)-body ground(-)

Oscilloscope setting

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

Vehicle condition

  • Idle (immediately after starting the engine)

### A/F sensor heater control

PCM terminals

  • 2BG(+)-body ground(-)

Oscilloscope setting

  • 2 V/DIV (Y), 500 ms/DIV (X), DC range

Vehicle condition

  • Idle (immediately after starting the engine)