#
PCM INSPECTION [L3]

BME014018880202

  Note

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

  - CMP sensor (See CAMSHAFT POSITION (CMP) SENSOR INSPECTION [L3].)
  - 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 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
  - ARPMDES
  - EVAPCP
  - FAN DUTY
  - FP
  - FUELPW1
  - GENVDSD
  - HTR11
  - HTR12
  - IAC
  - IMRC
  - IMTV
  - INJ_1, INJ_2, INJ_3, INJ_4
  - SEGRP
  - TEST

PID/DATA monitor table (reference)

Monitor item (Definition) | Unit/Condition | Condition/Specification (Reference) | Action | PCM terminal
--- | --- | --- | --- | ---
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, AC_REQ, TR. Inspect A/C relay. | 4O
AC_REQ (A/C switch) | On/Off | A/C switch and fan switch ON at ignition switch ON: Off A/C switch OFF at ignition switch ON: Off | Inspect A/C switch. | 1AC
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. (See GENERATOR INSPECTION [L3].) | 1AD
ALTT V (Generator output voltage) | V | Ignition switch ON: 0 V Idle: Approx. 14.9 V*1 (E/L not operating) | Inspect generator. (See GENERATOR INSPECTION [L3].) | 1AA
ARPMDES (Target engine speed) | RPM | No load: 650 rpm E/L operating: 650 rpm P/S operating: 700 rpm A/C ON: 700 rpm | Inspect following PIDs: IAT, RPM, MAP, ECT, MAF, TP, INGEAR, AC_REQ, TR, PSP, ALTT V. Inspect IAC valve. (See IDLE AIR CONTROL (IAC) VALVE INSPECTION [L3].) Inspect CKP sensor. (See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [L3].) | -
AST (After start timer) | Time | - | - | -
BARO (Barometric pressure) | Pressure | Ignition switch ON (at sea level): approx. 101 kPa | Inspect BARO sensor. (See BAROMETRIC PRESSURE (BARO) SENSOR INSPECTION [L3].) | 1G
V | Ignition switch ON (at sea level): approx. 4.1 V
BOO (Brake switch) | On/Off | Brake pedal depressed: On Brake pedal released: Off | Inspect brake switch. | 1K
CHRGLMP (Generator warning light) | On/Off | Ignition switch ON: On Idle: Off | Perform applicable DTC troubleshooting. (See DTC TABLE [L3].) | 4C
COLP (Refrigerant pressure switch (middle))*6 | On/Off | Refrigerant pressure switch (middle) ON *2 at idle: On Refrigerant pressure switch (middle) OFF*3 at idle: Off | Inspect refrigerant pressure switch. (See REFRIGERANT PRESSURE SWITCH INSPECTION.) | 1Q
CPP (Clutch pedal position) | On/Off | Clutch pedal depressed: On Clutch pedal released: Off | Inspect CPP switch. (See CLUTCH PEDAL POSITION (CPP) SWITCH INSPECTION [L3 MTX].) | 1R*6
CPP/PNP (Shift lever position) | On/Off | Neutral position: On Others: Off | Inspect neutral switch. (See NEUTRAL SWITCH INSPECTION [L3 MTX].) | 1W*6
DTCCNT (Number of DTC detected) | - | - | Perform applicable DTC troubleshooting. (See DTC TABLE [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. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [L3].) | 1M
V | ECT 20 °C {68 °F}: 3.04-3.14 V ECT 60 °C {140 °F}: 1.29-1.39 V
EVAPCP (Purge solenoid valve duty value) | % | Ignition switch ON: 0% Idle: 0% | Inspect following PIDs: IAT, RPM, ECT, MAF, O2S11,BARO, INGEAR, TR, VPWR. (See PURGE SOLENOID VALVE INSPECTION [L3].) | 4U
FAN DUTY (Fan control duty) | % | ECT below 98 °C {208 °F}: 0% A/C operating and refrigerant pressure switch (middle) ON: 100% | Inspect following PIDs: RPM, TP, ECT, AC_REQ, COLP, TEST. Inspect fan control module. (See FAN CONTROL MODULE INSPECTION.) | 1U
FDPDTC (Pending code caused FFD storage) | - | - | Perform applicable DTC troubleshooting. (See DTC TABLE [L3].) | -
FP (Fuel pump relay) | On/Off | Ignition switch ON: Off Idle: ON Cranking: On | Inspect following PIDs: RPM. Inspect fuel pump relay. (See RELAY INSPECTION.) | 4P*5
4Q*4
FUELPW (Fuel injector duration) | Time | 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, AC_REQ, VPWR, ALTT V. Inspect fuel injector. (See RELAY INSPECTION.) | 4W, 4Z, 4AA, 4AD
FUELSYS (Fuel system status) | Open loop/Closed loop | Ignition switch ON: Open loop Idle (after warm up): Open loop | Inspect following PIDs: IAT, MAF, TP, MAP, ECT, RPM, O2S11, O2S12, INGEAR, TR, PSP, AC_REQ, VPWR, ALTT V. Inspect fuel injector. (See RELAY INSPECTION.) | -
GENVDSD (Generator voltage desired) | V | Ignition switch ON: 0 V Idle: Approx. 14.9 V*1 (E/L not operating) | Perform applicable DTC troubleshooting. (See DTC TABLE [L3].) | -
HTR11 (HO2S heater (front)) | On/Off | Idle (after warm up): On⇔Off | Inspect following PIDs: IAT, MAF, TP, ECT, RPM, AC_REQ. (See HEATED OXYGEN SENSOR (HO2S) INSPECTION [L3].) | 4A
HTR12 (HO2S heater (rear)) | On/Off | Ignition switch ON: Off (HO2S heater operated) Idle: On (HO2S heater operated) | Inspect following PIDs: IAT, MAF, ECT, RPM, AC_REQ. (See HEATED OXYGEN SENSOR (HO2S) INSPECTION [L3].) | 4D
IAC (IAC valve) | % | Ignition switch ON: 0% Idle: Approx. 60% (ECT 90°C {194 °F} and E/L not operating) | Inspect following PIDs: IAT, RPM, MAP, ECT, MAF, TP, INGEAR, TR, PSP, AC_REQ. Inspect IAC valve. (See IDLE AIR CONTROL (IAC) VALVE INSPECTION [L3].) | 4G 4J
IAT (Intake air temperature) | °C | °F | IAT 20 °C {68 °F}: 20 °C {68 °F} IAT 30 °C {86 °F}: 30 °C {86 °F} | Inspect IAT sensor. (See INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION [L3].) | 2E
V | IAT 20 °C {68 °F}: 2.4-2.6 V IAT 30 °C {86 °F}: 1.7-1.9 V
IMTV (VIS 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. (See VARIABLE INTAKE-AIR SYSTEM (VIS) CONTROL SOLENOID VALVE INSPECTION [L3].) | 4R
IMRC (Variable tumble control solenoid valve) | On/Off | Engine speed is below 3,500 rpm and ECT is below 60 °C {140 °F}: On Others: Off | Inspect following PIDs: RPM. Inspect variable tumble control solenoid valve. (See VARIABLE TUMBLE CONTROL SOLENOID VALVE INSPECTION [L3].) | 4T
INGEAR (Load/no load condition) | On/Off | CPP or CPP/PNP is ON: Off Others: On | Perform applicable DTC troubleshooting. (See DTC TABLE [L3].) | 1R*6, 1W*6
IVS (CTP condition) | On/off | CTP: On Others: Off | Perform applicable DTC troubleshooting. (See DTC TABLE [L3].) | 2A
KNOCKR (Knocking retard) | Angle | Ignition switch ON: 0 degree Idle: 0 degree | Inspect knock sensor. (See KNOCK SENSOR INSPECTION [L3].) | 2P, 2S
LOAD (Engine load) | % | Ignition switch ON: 0% Idle (after warm up): approx.19% | Inspect MAF sensor. (See MASS AIR FLOW (MAF) SENSOR INSPECTION [L3].) | -
LONGFT1 (long term fuel trim) | % | Idle (after warm up): approx.-14-14% | Perform applicable DTC troubleshooting. (See DTC TABLE [L3].) | -
MAF (Mass airflow) | g/s | Ignition switch ON: approx. 0 g/s Idle (after warm up): 1.5 g/s | Inspect MAF sensor. (See MASS AIR FLOW (MAF) SENSOR INSPECTION [L3].) | 1P
V | Ignition switch ON: approx. 0.7 V Idle (after warm up): 1.3 V
MAP (Manifold absolute pressure) | Pressure | Ignition switch ON (at sea level): approx. 101 kPa {760 mmHg, 14.7 psi} | Inspect MAP sensor. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION [L3].) | 1J
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 [L3].) | 4I
MIL_DIS (Travelled distance since the MIL illuminated) | Distance | No DTC: 0 km {0 mph} DTC detected: Not 0 km {0 mph} | Perform applicable DTC troubleshooting. (See DTC TABLE [L3].) | -
O2S11 (Front oxygen sensor) | V | Ignition switch ON: 0-1.0 V Idle (After warm up): 0-1.0 V Acceleration (After warm up): 0.5-1.0 V Deceleration (After warm up):
0-0.5 V
Inspect HO2S (front).
(See HEATED OXYGEN SENSOR (HO2S) INSPECTION [L3].)
1AB
O2S12 (Rear oxygen sensor) | V | Idle (After warm up): approx. 0.6 V | Inspect HO2S (rear). (See HEATED OXYGEN SENSOR (HO2S) INSPECTION [L3].) | 1Y
PSP (Power steering pressure switch) | On/Off | Steering wheel in straight ahead position: Off Others: On | Inspect PSP switch. (See POWER STEERING PRESSURE (PSP) SWITCH INSPECTION [L3].) | 1Z
RFCFLAG (Readiness function code) | On/Off | Before running PCM adaptive memory procedure drive mode: On After running PCM adaptive memory procedure drive mode: Off | Run PCM adaptive memory procedure drive mode. (See OBD DRIVE MODE [L3].) | -
RO2FT1 (Rear oxygen sensor fuel trim) | % | Idle (after warm up): approx.-3-3% | Perform applicable DTC troubleshooting. (See DTC TABLE [L3].) | -
RPM (Engine speed) | RPM | No load: 600-700 rpm E/L operating: 600-700 rpm P/S operating: 650-750 rpm A/C ON: 650-750rpm | Inspect CKP sensor. (See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [L3].) | 2D, 2G
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. (See EGR VALVE INSPECTION [L3].) | 4E 4H 4K 4N
SHRTFT1 (Short term fuel trim) | % | Idle (after warm up): approx.-30-25% | Perform applicable DTC troubleshooting. (See DTC TABLE [L3].) | -
SPARKADV (Ignition timing) | BTDC | Ignition switch ON: BTDC 0 degree Idle: BTDC approx. 10 degree | Inspect following PIDs: MAF, TP, ECT, RPM, INGEAR, TR, PSP, AC_REQ, VPWR. Inspect ignition timing. (See IGNITION TIMING INSPECTION [L3].) | 2J 2M
TEST (TEN terminal (DLC)) | On/Off | Terminal TEN (DLC) shorted to GND: On Terminal TEN (DLC) open: Off | Inspect wiring from DLC terminal TEN to PCM terminal 1I | 1I*6, 1L*7
TP (TP) | % | CTP: 13-23% WOT: 86-96% | Inspect TP sensor. (See THROTTLE POSITION (TP) SENSOR INSPECTION [L3].) | 2A
V | CTP: 0.65-1.15 V WOT: 4.3-4.8 V
TPCT (TP sensor voltage at CTP) | V | 0.65-1.15 V | Inspect TP sensor. (See THROTTLE POSITION (TP) SENSOR INSPECTION [L3].) | 2A
VPWR (Battery positive voltage) | V | Ignition switch ON: B+ | Inspect main relay. (See RELAY INSPECTION.) Inspect battery. (See BATTERY INSPECTION.) | 2Y, 2Z
VSS (Vehicle speed) | KPH | MPH | Vehicle speed 20 km/h {12 mph}: 20 KPH {12 MPH} Vehicle speed 40 km/h {25 mph}: 20 KPH {12 MPH} | Perform applicable DTC troubleshooting. (See DTC TABLE [L3].) | 2L

  *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 :
Immobilizer system equipped
  *5 :
Immobilizer system not equipped
  *6 :
MTX models
  *7 :
ATX models

## Without Using the 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.

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) | Action
--- | --- | --- | --- | --- | ---
1A | IGT1 | Ignition coil (No. 1, 4 cylinders) | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect ignition coil (See IGNITION COIL INSPECTION [L3].) • Inspect related harness
1B | IGT2 | Ignition coil (No. 2, 3 cylinders) | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect ignition coil (See IGNITION COIL INSPECTION [L3].) • Inspect related harness
1C | GND | GND | Under any condition | Below 1.0 | • Inspect related harness
1D | GND | GND | Under any condition | Below 1.0 | • Inspect related harness
1E | - | - | - | - | -
1F | - | - | - | - | -
1G*5 | Atmospheric pressure | BARO sensor | Ignition switch ON (Engine OFF at sea level) | Approx. 4.1 | • Inspect BARO sensor (See BAROMETRIC PRESSURE (BARO) SENSOR INSPECTION [L3].) • Inspect related harness
Ignition switch OFF | Below 1.0
1H*6 | Torque reduction prohibited | ABS HU/CM ABS/TCS HU/CM | Because this terminal is for communication, good/no good judgment by terminal voltage is not possible. | • Inspect ABS, ABS/TCS HU/CM • Inspect related harness
1I | TEST*5 | TEN terminal (DLC) | Ignition switch ON | B+ | • Inspect related harness
ECT output*6 | Combination meter | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect combination meter • Inspect related harness
1J | Manifold absolute pressure | MAP sensor | Ignition switch ON (Engine OFF at sea level) | Approx. 4.1 | • Inspect MAP sensor (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION [L3].) • Inspect related harness
Idle (at sea level) | Approx. 1.5
1K | Brake | Brake switch | Brake pedal depressed | B+ | • Inspect brake switch • Inspect related harness
Brake pedal released | Below 1.0
1L | - | - | - | - | -
1M | ECT | ECT sensor | Ignition switch ON | ECT 20 °C {68 °F} | 3.04-3.14 | • Inspect ECT sensor (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [L3].) • Inspect related harness
ECT 60 °C {140 °F} | 1.29-1.39
1N*6 | Engine speed output | Combination meter | Because this terminal is for communication, good/no good judgment by terminal voltage is not possible. | • Inspect combination meter • Inspect related harness
1O*6 | GND | MAF sensor | Under any condition | Below 1.0 | • Inspect related harness
1P | MAF | MAF sensor | Ignition switch ON | Approx. 0.7 | • Inspect MAF sensor (See MASS AIR FLOW (MAF) SENSOR INSPECTION [L3].) • Inspect related harness
Idle (after warm up) | Approx. 1.3
1Q | Refrigerant pressure switch (middle) | Refrigerant pressure switch (middle) | A/C ON | Refrigerant pressure is above 1.52 MPa {15.5 kgf/cm2, 220 psi} | Below 1.0 | • Inspect refrigerant pressure switch • Inspect related harness
Refrigerant pressure is below 1.23 MPa {12.5 kgf/cm2, 178 psi} | B+
1R*1 | Clutch operation | Clutch pedal position switch | Clutch pedal depressed | Below 1.0 | • Inspect clutch pedal position switch (See CLUTCH PEDAL POSITION (CPP) SWITCH INSPECTION [L3 MTX].) • Inspect related harness
Clutch pedal released | B+
1S | - | - | - | - | -
1T | - | - | - | - | -
1U*5 | Cooling fan control | Fan control module | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect fan control module (See FAN CONTROL MODULE INSPECTION.) • Inspect related harness
1V | - | - | - | - | -
1W | Neutral position*1 | Neutral switch | Shift lever is at neutral position | Below 1.0 | • Inspect neutral switch (See NEUTRAL SWITCH INSPECTION [L3 MTX].) • Inspect related harness
Shift lever is not at neutral position | B+
Selector lever position*2 | TR switch (terminal C) | Ignition switch ON | P range | Approx. 4.6 | • Inspect TR switch • Inspect related harness
R range | Approx. 3.9
N range | Approx. 3.2
D range | Approx. 2.5
S range | Approx. 1.7
L range | Approx. 0.94
1X | - | - | - | - | -
1Y*5 | HO2S (rear) | HO2S (rear) | Ignition switch ON | Approx. 0 | • Inspect HO2S (rear) (See HEATED OXYGEN SENSOR (HO2S) INSPECTION [L3].) • Inspect related harness
Idle (after warm up) | Approx. 0.6
1Z | PSP | PSP switch | Idle | Steering wheel at straight ahead position | B+ | • Inspect PSP switch (See POWER STEERING PRESSURE (PSP) SWITCH INSPECTION [L3].) • Inspect power steering system • Inspect related harness
While turning steering wheel | Below 1.0
1AA | Generator output voltage | Generator (terminal P) | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect generator • Inspect related harness
1AB | HO2S (front) | HO2S (front) | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect HO2S (front) (See HEATED OXYGEN SENSOR (HO2S) INSPECTION [L3].) • Inspect related harness
1AC | A/C on signal | Refrigerant pressure switch | Idle | A/C switch and fan switch on | Below 1.0 | • Inspect refrigerant pressure switch • Inspect related harness
A/C switch off | B+
1AD | Generator field coil control | Generator (terminal D) | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect following PIDs: IAT, ECT, RPM, VPWR, ALTT V. • Inspect generator • Inspect related harness
2A | Throttle position | TP sensor | Ignition switch ON | CTP | 0.65-1.15 | • Inspect TP sensor (See THROTTLE POSITION (TP) SENSOR INSPECTION [L3].) • Inspect related harness
WOT | 4.3-4.8
2B | ECT output*5 | Combination meter | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect combination meter • Inspect related harness
Torque reduction requested*6 | ABS HU/CM ABS/TCS HU/CM | Because this terminal is for communication, good/no good judgment by terminal voltage is not possible. | • Inspect ABS, ABS/TCS HU/CM • Inspect related harness
2C*5 | Torque reduction prohibited | ABS HU/CM ABS/TCS HU/CM | Because this terminal is for communication, good/no good judgment by terminal voltage is not possible. | • Inspect ABS, ABS/TCS HU/CM • Inspect related harness
2D | CKP (+) | CKP sensor | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect CKP sensor (See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [L3].) • Inspect related harness
2E | IAT | MAF/IAT sensor | Ignition switch ON | IAT 20 °C {68 °F} | 2.4-2.6 | • Inspect IAT sensor (See INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION [L3].) • Inspect related harness
IAT 30 °C {86 °F} | 1.7-1.9
2F*5 | Torque reduction requested | ABS HU/CM ABS/TCS HU/CM | Because this terminal is for communication, good/no good judgment by terminal voltage is not possible. | • Inspect ABS, ABS/TCS HU/CM • Inspect related harness
2G | CKP (-) | CKP sensor | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect CKP sensor (See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [L3].) • Inspect related harness
2H | Sensor GND | MAF/IAT sensor, HO2S (Front, Rear), ECT sensor, TP sensor, MAP sensor, TFT sensor, TR switch | Under any condition | Below 1.0 | • Inspect related harness
2I | - | - | - | - | -
2J | CMP (+) | CMP sensor | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect CMP sensor (See CAMSHAFT POSITION (CMP) SENSOR INSPECTION [L3].) • Inspect related harness
2K | Constant voltage (Vref) | MAP sensor, TP sensor, BARO sensor | Ignition switch ON | Approx. 5.0 | • Inspect related harness
2L*5 | VSS (+) | VSS | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect VSS sensor (See VEHICLE SPEED SENSOR (VSS) INSPECTION [FN4A-EL].) • Inspect related harness
2M | CMP (-) | CMP sensor | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect CMP sensor (See CAMSHAFT POSITION (CMP) SENSOR INSPECTION [L3].) • Inspect related harness
2N*5 | Engine speed output | Combination meter | Because this terminal is for communication, good/no good judgment by terminal voltage is not possible. | • Inspect combination meter • Inspect related harness
2O | - | - | - | - | -
2P | 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" (See ON-BOARD DIAGNOSTIC TEST [L3].) • Inspect related harness
2Q*3 | Coil (Immobilizer system) | Coil | Because this terminal is for communication, good/no good judgment by terminal voltage is not possible. | • Inspect coil • Inspect related harness
2R | CAN (-) | Instrument cluster, ABS HU/CM, ABS/TCS HU/CM | Because this terminal is for CAN, good/no good judgment by terminal voltage is not possible. | • Inspect related harness
2S | 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" (See ON-BOARD DIAGNOSTIC TEST [L3].) • Inspect related harness
2T | Fuel consumption*5 | Fuel ECON module | Because this terminal is for communication, good/no good judgment by terminal voltage is not possible. | • Inspect related harness
Cooling fan control*6 | Fan control module | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect fan control module • Inspect related harness
2U | CAN (+) | Instrument cluster, ABS HU/CM, ABS/TCS HU/CM | Because this terminal is for CAN, good/no good judgment by terminal voltage is not possible. | • Inspect related harness
2V | - | - | - | - | -
2W*6 | Fuel consumption | Fuel ECON module | Because this terminal is for communication, good/no good judgment by terminal voltage is not possible. | • Inspect related harness
2X | GND | Main relay | Ignition switch OFF | Below 1.0 | • Inspect main relay (See RELAY INSPECTION.) • Inspect related harness
2Y | B+ | Main relay | Ignition switch OFF | Below 1.0 | • Inspect battery • Inspect related harness
Ignition switch ON | B+
2Z | Back-up power supply | Battery (positive terminal) | Under any condition | B+ | • Inspect battery • Inspect related harness
2AA | - | - | - | - | -
2AB | GND | GND | Under any condition | Below 1.0 | • Inspect related harness
2AC | GND | GND | Under any condition | Below 1.0 | • Inspect related harness
2AD | - | - | - | - | -
3A | - | - | - | - | -
3B | - | - | - | - | -
3C*2 | Vehicle speed | VSS (ATX) | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect VSS • Inspect related harness
3D*2 | ATF temperature | TFT sensor | Ignition switch ON | TFT 20 °C {68 °F} | Approx. 3.3 | • Inspect TFT sensor • Inspect related harness
TFT 40 °C {104 °F} | Approx. 2.4
TFT 60 °C {140 °F} | Approx. 1.5
3E*2 | R range | TR switch | Ignition switch ON | R range | B+ | • Inspect TR switch • Inspect related harness
Other | Below 1.0
3F | - | - | - | - | -
3G*2 | Input/turbine speed sensor (+) | Input/turbine speed sensor | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect input/turbine speed sensor • Inspect related harness
3H*2 | D range | TR switch | Ignition switch ON | D range | B+ | • Inspect TR switch • Inspect related harness
Other | Below 1.0
3I | - | - | - | - | -
3J*2 | Input/turbine speed sensor (-) | Input/turbine speed sensor | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect input/turbine speed sensor • Inspect related harness
3K*2 | S range | TR switch | Ignition switch ON | S range | B+ | • Inspect TR switch • Inspect related harness
Other | Below 1.0
3L | - | - | - | - | -
3M | - | - | - | - | -
3N*2 | L range | TR switch | Ignition switch ON | L range | B+ | • Inspect TR switch • Inspect related harness
Other | Below 1.0
3O | - | - | - | - | -
3P*2 | Shift solenoid E control | Shift solenoid E | Detects TCC operation | B+ | • Inspect shift solenoid E • Inspect related harness
Others | Below 1.0
3Q*2 | HOLD | HOLD switch | Ignition switch ON | HOLD switch pushed | Below 1.0 | • Inspect HOLD switch • Inspect related harness
Others | B+
3R*2 | Indicator light control | Combination meter | Ignition switch ON | HOLD switch pushed | Below 1.0 | • Inspect combination meter • Inspect related harness
Others | B+
3S*2 | Shift solenoid D control | Shift solenoid D | Selector lever is at P, N position | B+ | • Inspect shift solenoid D • Inspect related harness
Others | Below 1.0
3T*2 | Oil pressure | Oil pressure switch | Oil pressure switch ON | Below 1.0 | • Inspect oil pressure switch • Inspect related harness
Oil pressure switch OFF | B+
3U | - | - | - | - | -
3V*2 | Pressure control solenoid (-) | Pressure control solenoid valve | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect pressure control solenoid valve • Inspect related harness
3W | - | - | - | - | -
3X | - | - | - | - | -
3Y*2 | Pressure control solenoid (+) | Pressure control solenoid valve | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect pressure control solenoid valve • Inspect related harness
3Z | - | - | - | - | -
3AA | - | - | - | - | -
4A | HO2S (Front) heater control | HO2S (Front) heater | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect HO2S (Front) heater. (See HEATED OXYGEN SENSOR (HO2S) INSPECTION [L3].) • Inspect related harness
4B | - | - | - | - | -
4C | Generator warning light control | Generator warning light | Ignition switch ON | B+ | • Inspect related harness
Idle | Below 1.0
4D*5 | HO2S (Rear) heater control | HO2S (Rear) heater | Ignition switch ON | Below 1.0 | • Inspect HO2S (Front) heater. (See HEATED OXYGEN SENSOR (HO2S) INSPECTION [L3].) • Inspect related harness
Idle | Below 1.0
4E | EGR valve #1 coil control | EGR valve (terminal E) | Ignition switch ON | Below 1.0 | • Inspect EGR valve (See EGR VALVE INSPECTION [L3].) • Inspect related harness
Idle | Below 1.0
4F | - | - | - | - | -
4G | IAC (+) | IAC valve | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect IAC valve (See IDLE AIR CONTROL (IAC) VALVE INSPECTION [L3].) • Inspect related harness
4H | EGR valve #2 coil control | EGR valve (terminal A) | Ignition switch ON | B+ | • Inspect EGR valve (See EGR VALVE INSPECTION [L3].) • Inspect related harness
Idle | B+
4I | MIL | Manifold absolute pressure | Ignition switch ON | Below 1.0 | • Perform "On-Board Diagnostic Test" (See ON-BOARD DIAGNOSTIC TEST [L3].) • Inspect related harness
Idle | B+
4J | IAC (-) | IAC valve | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect IAC valve (See IDLE AIR CONTROL (IAC) VALVE INSPECTION [L3].) • Inspect related harness
4K | EGR valve #3 coil control | EGR valve (terminal B) | Ignition switch ON | B+ | • Inspect EGR valve (See EGR VALVE INSPECTION [L3].) • Inspect related harness
Idle | B+
4L | - | - | - | - | -
4M | - | - | - | - | -
4N | EGR valve #4 coil control | EGR valve (terminal F) | Ignition switch ON | Below 1.0 | • Inspect EGR valve (See EGR VALVE INSPECTION [L3].) • Inspect related harness
Idle | Below 1.0
4O | A/C | A/C relay | A/C operating | Below 1.0 | • Inspect A/C relay • Inspect related harness
A/C not operating | B+
4P*4 | Fuel pump control | Fuel pump relay | Ignition switch ON | B+ | • Inspect fuel pump relay • Inspect related harness
Cranking | Below 1.0
Idle | Below 1.0
4Q*3 | Fuel pump control | Fuel pump relay | Ignition switch ON | B+ | • Inspect fuel pump relay • Inspect related harness
Cranking | Below 1.0
Idle | Below 1.0
4R | VIS control | VIS control solenoid valve | Engine speed: above 4,500 rpm | B+ | • Inspect VIS solenoid valve (See VARIABLE INTAKE-AIR SYSTEM (VIS) CONTROL SOLENOID VALVE INSPECTION [L3].) • Inspect related harness
Engine speed: below 4,500 rpm | Below 1.0
4S | - | - | - | - | -
4T | Variable tumble control | Variable tumble control solenoid valve | ECT above 60 °C {140 °F} while idling. | B+ | • Inspect VIS solenoid valve (See VARIABLE TUMBLE CONTROL SOLENOID VALVE INSPECTION [L3].) • Inspect related harness
ECT below 60 °C {140 °F} and engine speed below 3,500 rpm | Below 1.0
4U | Purge control | Purge solenoid valve | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect purge solenoid valve (See PURGE SOLENOID VALVE INSPECTION [L3].) • Inspect related harness
4V*2 | B+ | Main relay | Ignition switch OFF | Below 1.0 | • Inspect battery • Inspect related harness
Ignition switch ON | B+
4W | Fuel injection (#2) | Fuel injector No.2 | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect fuel injector No.2 (See FUEL INJECTOR INSPECTION [L3].) • Inspect related harness
4X | GND | GND | Under any condition | Below 1.0 | • Inspect related harness
4Y*2 | Shift solenoid C control | Shift solenoid C | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect shift solenoid C • Inspect related harness
4Z | Fuel injection (#1) | Fuel injector No.1 | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect fuel injector No.1 (See FUEL INJECTOR INSPECTION [L3].) • Inspect related harness
4AA | Fuel injection (#4) | Fuel injector No.4 | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect fuel injector No.4 (See FUEL INJECTOR INSPECTION [L3].) • Inspect related harness
4AB*2 | Shift solenoid A control | Shift solenoid A | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect shift solenoid A • Inspect related harness
4AC*2 | Shift solenoid B control | Shift solenoid B | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect shift solenoid B • Inspect related harness
4AD | Fuel injection (#3) | Fuel injector No.3 | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Inspect fuel injector No.3 (See FUEL INJECTOR INSPECTION [L3].) • Inspect related harness

  *1 :
MTX models
  *2 :
ATX models
  *3 :
Immobilizer system equipped
  *4 :
Immobilizer system not equipped
  *5 :
European (L.H.D. U.K.) specs.
  *6 :
Except European (L.H.D. U.K.) specs.

## Inspection Using An Oscilloscope (Reference)

### IGT1, IGT2 control signals

PCM terminals

  • IGT1(No.1 and No.4): 1A(+)-1D(-)
  • IGT2(No.2 and No.3): 1B(+)-1C(-)

Oscilloscope setting

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

Vehicle condition

  • Idle after warm up (engine speed approx. 650 rpm, no load, P/S off, A/C off)

### ECT (Engine Coolant Temperature) output signals

PCM terminals

  • 2B*1 (+)-1C (-)
  • 1I*2 (+)-1C (-)

Oscilloscope setting

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

Vehicle condition

  • Idle after warm up (engine speed approx. 650 rpm, no load, P/S off, A/C off)

### Cooling Fan Control signals

PCM terminals

  • 1U*1 (+)-1C (-)
  • 2T*2 (+)-1C (-)

Oscilloscope setting

  • 2 V/DIV (Y), 0.2 ms/DIV (X), DC range

Vehicle condition

  • Idle after warm up (A/C ON)

### Generator output voltage signal

PCM terminals

  • 1AA(+)-2AC(-)

Oscilloscope setting

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

Vehicle condition

  • Idle after warm up (engine speed approx. 650 rpm, no load, P/S off, A/C off)

### HO2S (front) signal

PCM terminals

  • 1AB(+)-2H(-)

Oscilloscope setting

  • 0.1 V/DIV (Y), 400 ms/DIV (X), DC range

Vehicle condition

  • Idle after warm up (engine speed approx. 650 rpm, no load, P/S off, A/C off)

### Generator field coil control signal

PCM terminals

  • 1AD(+)-1C(-)

Oscilloscope setting

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

Vehicle condition

  • Idle after warm up (engine speed approx. 650 rpm, no load, P/S off, A/C off)

### CKP sensor signal

(+)

PCM terminals

  • 2D(+)-2H(-)

Oscilloscope setting

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

Vehicle condition

  • Idle after warm up (engine speed approx. 650 rpm, no load, P/S off, A/C off)

(-)

PCM terminals

  • 2G(+)-2H(-)

Oscilloscope setting

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

Vehicle condition

  • Idle after warm up (engine speed approx. 650 rpm, no load, P/S off, A/C off)

### VSS signal

PCM terminals

  • 2L*1 (+)-1C (-)
  • 3C*2 (+)-1C (-)

Oscilloscope setting

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

Vehicle condition

  • Drive the vehicle with approx. 60 km/h {37.3 mph}

### CMP sensor signal

(+)

PCM terminals

  • 2J(+)-2H(-)

Oscilloscope setting

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

Vehicle condition

  • Idle after warm up (engine speed approx. 650 rpm, no load, P/S off, A/C off)

(-)

PCM terminals

  • 2M(+)-2H(-)

Oscilloscope setting

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

Vehicle condition

  • Idle after warm up (engine speed approx. 650 rpm, no load, P/S off, A/C off)

### Input/turbine speed sensor signal

PCM terminals

  • 3G*2 (+)-3J*2 (-)

Oscilloscope setting

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

Vehicle condition

  • Idle after warm up (engine speed approx. 650 rpm [MTX] or 700 rpm [ATX], no load, P/S off, A/C off)

### Pressure control solenoid signal

(-)

PCM terminals

  • 3V(+)-1C(-)

Oscilloscope setting

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

Vehicle condition

  • Idle after warm up (engine speed approx. 650 rpm, no load, P/S off, A/C off)

(+)

PCM terminals

  • 3Y(+)-1C(-)

Oscilloscope setting

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

Vehicle condition

  • Idle after warm up (engine speed approx. 650 rpm, no load, P/S off, A/C off)

### HO2S (front) heater control signal

PCM terminals

  • 4A(+)-1C(-)

Oscilloscope setting

  • 5 V/DIV (Y), 200 ms/DIV (X), DC range

Vehicle condition

  • Idle after warm up (engine speed approx. 650 rpm, no load, P/S off, A/C off)

### IAC signal

(+)

PCM terminals

  • 4G(+)-1C(-)

Oscilloscope setting

  • 2 V/DIV (Y), 0.4 ms/DIV (X), DC range

Vehicle condition

  • Idle after warm up (engine speed approx. 650 rpm, no load, P/S off, A/C off)

(-)

PCM terminals

  • 4J(+)-1C(-)

Oscilloscope setting

  • 2 V/DIV (Y), 0.4 ms/DIV (X), DC range

Vehicle condition

  • Idle after warm up (engine speed approx. 650 rpm, no load, P/S off, A/C off)

### Purge control signal

PCM terminals

  • 4U(+)-1C(-)

Oscilloscope setting

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

Vehicle condition

  • Idle after warm up (engine speed approx. 650 rpm, no load, P/S off, A/C off)

### Fuel injection control

PCM terminals

  • Fuel Injection No.1: 4Z(+)-1C(-)
  • Fuel Injection No.1: 4W(+)-1C(-)
  • Fuel Injection No.1: 4AD(+)-1C(-)
  • Fuel Injection No.1: 4AA(+)-1C(-)

Oscilloscope setting

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

Vehicle condition

  • Idle after warm up (engine speed approx. 650 rpm, no load, P/S off, A/C off)

### Shift solenoid C control

PCM terminals

  • 4Y*2 (+)-1C(-)

Oscilloscope setting

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

Vehicle condition

  • Idle after warm up (engine speed approx. 650 rpm, no load, P/S off, A/C off)

### Shift solenoid A control

PCM terminals

  • 4AB*2 (+)-1C(-)

Oscilloscope setting

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

Vehicle condition

  • Idle after warm up (engine speed approx. 650 rpm, no load, P/S off, A/C off)

### Shift solenoid B control

PCM terminals

  • 4AC*2 (+)-1C(-)

Oscilloscope setting

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

Vehicle condition

  • Idle after warm up (engine speed approx. 650 rpm, no load, P/S off, A/C off)