PCM INSPECTION [L3 Turbo]

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Using the WDS or Equivalent

  Note
  • PIDs for the following parts are not available on this model. Perform the specific inspections for the following parts:
    ― CMP sensor (See CAMSHAFT POSITION (CMP) SENSOR INSPECTION [L3 Turbo].)
    ― Main relay (See RELAY INSPECTION.)

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

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2. Turn the ignition switch to the ON position.

3. Measure the PID value.

  • If PID value is not within the specification, follow the instructions in the “Inspection item” 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, FAN_DUTY, EVAPCP, FP, FUELPW1, GENVDSD, HTR11, HTR12, IMRC, INJ_1, INJ_2, INJ_3, INJ_4, SEGRP, test, VT DUTY1, WGC

PID/DATA monitor table (reference)

Monitor item (Definition) | Unit/Condition | Condition/Specification (Reference) | Inspection item | PCM terminal
--- | --- | --- | --- | ---
AC_REQ (A/C switch) | On/Off | A/C switch and fan switch ON at ignition switch ON: On A/C switch OFF at ignition switch ON: Off | • A/C switch | 1AC
ACCS (A/C relay) | On/Off | Ignition switch ON: Off A/C switch ON and fan switch ON at idle: On | • The following PIDs: ― RPM, TP, ECT, ACSW • A/C relay | 4N
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 | • The following PIDs: ― IAT, ECT, RPM, VPWR, ALTT V • Generator | 1AD
ALTT V (Generator output voltage) | V | Ignition switch ON: 0 V Idle: Approx. 14.5 V*1 (E/L not operating) | • Generator | 1AB
AFR | — | Target air-oil ratio is displayed | • A/F sensor | 1Y 2D 2G 2J
AFR_ACT | — | Actual air-oil ratio is displayed | • A/F sensor | 1Y 2D 2G 2J
APP (Accelerator pedal position) | % | AP is released: 0% AP is depressed: 100% | • The following PIDs: ― APP1, APP2 • Accelerator pedal position sensor | 2A 3D
APP1 (Accelerator pedal position) | % | AP is released: 31.0—32.4% AP is depressed: 69.8—81.8% | • Accelerator pedal position sensor | 3D
V | AP is released: Approx. 1.6 V AP is depressed: Approx. 3.9 V
APP2 (Accelerator pedal position) | % | AP is released: 20.2—21.4% AP is depressed: 58.8—70.8% | • Accelerator pedal position sensor | 2A
V | AP is released: Approx. 1.0 V AP is depressed: Approx. 3.4 V
ARPMDES (Target engine speed) | RPM | No load: 700 rpm E/L operating: 700 rpm P/S operating: 700 rpm A/C ON: 750 rpm | • The following PIDs: ― IAT, RPM, MAP, ECT, MAF, TP, INGEAR, ACSW, PSP, ALTT V • CKP sensor | —
B+ (Battery positive voltage)*4 | V | Ignition switch ON: B+ | • Main relay • Battery | 2Y
BARO (Barometric pressure) | Pa | Ignition switch ON: Indicate the atmospheric pressure | • BARO sensor | —
V
BAT | °C | Boost air temperature is displayed | • MAP/boost air temperature sensor | 1S
BAT_V | V | Boost air temperature 20 °C {68 °F}: 2.4—2.6 V | • MAP/boost air temperature sensor | 1S
Boost air temperature 30 °C {86 °F}: 1.7—1.9 V
BOO (Brake switch) | On/Off | Brake pedal depressed: On Brake pedal released: Off | • Brake switch | 1K 3T
BPA (Brake pressure applied switch)*5 | On/Off | Brake pedal depressed: On Brake pedal released: Off | • Brake switch | 1K 3T
CATT11_DSD (Estimated catalytic converter temperature) | °C | °F | Indicate the estimated catalytic converter temperature | • Perform applicable DTC troubleshooting. | —
CHRGLP (Generator warning light) | On/Off | Ignition switch ON: On Idle: Off | • Perform applicable DTC troubleshooting. | —
COLP (Refrigerant pressure switch (middle)) | ON/OFF | Refrigerant pressure switch (middle) ON*2 at idle: ON Refrigerant pressure switch (middle) OFF*3 at idle: OFF | • Refrigerant pressure switch | 1Q
CPP (Clutch pedal position) | On/Off | Clutch pedal depressed: On Clutch pedal released: Off | • CPP switch | 1H
CPP/PNP (Shift lever position) | Drive/Neutral | Neutral position: Neutral Others: Drive | • Neutral switch | 1W
DTCCNT (Number of DTC detected) | — | — | • Perform applicable DTC troubleshooting. | —
ECT (Engine coolant temperature) | °C | °F | Ignition switch at ON position: Indicate the ECT | • ECT sensor | 1M
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. | 2D 2G 2J
EQ_RAT11_DSD (A/F sensor) | — | Idling after warm-up: Approx. 1 | • Perform applicable DTC troubleshooting. | 2D 2G 2J
ETC_ACT (Electronic throttle control actual) | ° | Indicate the desired TP by angle | • Perform applicable DTC troubleshooting. | 3J 3M
ETC_DSD (Electronic throttle control desired) | % | Indicate the desired TP by percent | • The following PIDs: ― APP1, APP2, ETC_ACT • TP sensor | 3J 3M
° | Indicate the desired TP by angle
EVAPCP (Purge solenoid valve duty value) | % | Ignition switch ON: 0% Idle: 0% | • The following PIDs: ― IAT, RPM, ECT, MAF, O2S11,BARO, INGEAR, VPWR • Purge solenoid valve | 4T
FAN_DUTY | % | ECT less than 98 °C {208 °F}: 0% ECT 100 °C {212 °F}: 30% ECT 106 °C {223 °F}: 70% ECT 110 °C {230 °F}: 100% | • Fan control module | 4A
FIA (Fuel injection amount) | mg/cylinder | Indicate the fuel injection amount | • Fuel injector • Injector driver module | —
FP (Fuel pump relay) | On/Off | Idle: On Cranking: On | • The following PIDs: ― RPM • Fuel pump relay | 4Q
FP_Hi_PRES | On/Off | Spill valve control solenoid valve work: On Spill valve control solenoid valve don’t work: Off | • High pressure fuel pump | 1A 1B
FUEL_PRES | Pa | Idle: Approx. 3 MPa Load 60 % or more: Approx. 11.5 MPa | • Fuel pressure sensor | 1V
FUEL_PRES_V | V | Idle: Approx. 1.4 V | • Fuel pressure sensor | 1V
FUELSYS (Fuel system status) | OL/CL/ OL-Drive/ OL-Fault/ CL-Fault | Ignition switch ON: OL_Drive Idle (after warm up): CL | • The following PIDs: ― IAT, MAF, TP, MAP, ECT, RPM, O2S11, O2S12, INGEAR, PSP, ACSW, VPWR, ALTT V • Fuel injector | —
GENVDSD (Generator voltage desired) | V | Idle: Approx. 13.83 V*1 (E/L not operating) | • Perform applicable DTC troubleshooting. | —
HTR11 (A/F sensor heater) | On/Off | Idle (after warm up): OnÛOff | • The following PIDs: ― IAT, MAF, TP, ECT, RPM, ACSW | 4AD
HTR12 (HO2S heater) | On/Off | Idle: On Engine speed is above 4,000 rpm: Off | • The following PIDs: ― IAT, MAF, ECT, RPM, ACSW | 4Z
IAT (Intake air temperature) | °C | °F | Ignition switch at ON position: Indicate the IAT | • IAT sensor | 2V
V | IAT 20 °C {68 °F}: 2.4—2.6V IAT 30 °C {86 °F}: 1.7—1.9V
IMRC (Variable swirl solenoid valve) | On/Off | Engine speed is less than 3,250 rpm and ECT is less than 60 °C {140 °F}: On Engine speed is 3,250 rpm or more, or ECT is 60 °C {140 °F} or more: Off | • The following PIDs: ― TP, ECT, RPM • Variable swirl solenoid valve | 4K
INGEAR (Load/no load condition) | On/Off | CPP or CPP/PNP is On: Off Others: On | • Perform applicable DTC troubleshooting. | 1H 1W
IVS (CTP condition) | Idle/ Off Idle | APP closed: Idle Others: Off Idle | • Perform applicable DTC troubleshooting. | 3J 3M
KNOCKR (Knocking retard) | ° | Ignition switch ON: 0 ° Idle: 0 ° | • Knock sensor | 2P 2S
LOAD (Engine load) | % | Ignition switch ON: 0% Idle (after warm up): 17.1—18.5% Engine speed is 2,500 rpm: 14.2—15.2 | • MAF sensor | —
LONGFT1 (long term fuel trim) | % | Idle (after warm up):–14—14% | • Perform applicable DTC troubleshooting. | —
MAF (Mass airflow) | g/sec | Ignition switch ON: Approx. 0 g/s Idle (after warm up): 2.72—2.94 g/s Engine speed is 2,500 rpm: 8.00—8.66 | • MAF sensor | 1P
V | Ignition switch ON: Approx. 0.7 V Idle (after warm up): 1.15—1.28 V
MAP (Manifold absolute pressure) | Pa | Ignition switch at ON position: Indicate the atmospheric pressure | • MAP sensor | 1J
V | Ignition switch ON Manifold absolute pressure Approx. 102 kPa: Approx. 1.9 V
Idle Manifold absolute pressure Approx. 30 kPa: Approx. 0.7 V
MIL (Malfunction indicator lamp) | On/Off | Ignition switch ON: On Idle: Off | • Perform applicable DTC troubleshooting. | —
MIL_DIS (Traveled distance since the MIL illuminated) | km | mile | No DTC: 0 km {0 mile} DTC detected: Not 0 km {0 mile} | • Perform applicable DTC troubleshooting. | —
NUMKEYS (Number of keys stored in module) | — | Indicate the number of keys stored in module | — | —
O2S11 (A/F sensor) | A | Idle (after warm up): –1.0—1.0 A Deceleration (after warm up): 0.25 A or more | • A/F sensor | 2D 2G 2J
O2S12 (HO2S) | 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 | • HO2S | 1Y
PSP (Power steering pressure switch) | High/Low | Steering wheel in straight ahead position: Low Others: High | • PSP switch | 1Z
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. 0.2 | • The following PID ― O2S12 | 1Y
RPM (Engine speed) | RPM | No load: 650—750 rpm E/L operating: 650—750 rpm P/S operating: 650—750 rpm A/C ON: 700—800 rpm | • CKP sensor | 2C
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 | • Cruise control switch | —
SEGRP (EGR valve (stepping motor) position) | — | Idle: 0 step Cranking: 0—60 steps | • The following PIDs: ― MAF, TP, ECT, RPM, VSS • EGR valve | —
SEGRP DSD (Desired EGR valve (stepping motor) position) | % | Idle: 0% | • The following PIDs: ― MAF, TP, ECT, RPM, VSS | —
SELTESTDTC (DTC of KOEO/KOER self-test) | — | — | • Perform applicable DTC troubleshooting. | —
SHRTFT1 (Short term fuel trim [A/F sensor]) | % | Idle (after warm up): Approx.–30—25% | • Perform applicable DTC troubleshooting. | —
SHRTFT12 (Short term fuel trim) | % | Idle (after warm up): Approx.–30—25% | • Perform applicable DTC troubleshooting. | —
SPARKADV (Ignition timing) | °(BTDC) | Idle: BTDC Approx. 8° | • The following PIDs: ― MAF, TP, ECT, RPM, INGEAR, PSP, ACSW, VPWR • Ignition timing | —
test (Test mode) | On/Off | — | — | —
TIRESIZE (Tire revolution per mile) | rev/mile | Indicate the tire circumference length | — | —
TP REL (Relative TP) | % | Ignition switch to the ON position • APP is released: Approx. 17% Idle (after warm up) • Gradually depress the accelerator pedal while verifying that the value changes. | • TP sensor | 3J 3M
TP1 (TP sensor 1) | % | Ignition switch to the ON position • APP is released: Approx. 17% Idle (after warm up) • Gradually depress the accelerator pedal while verifying that the value changes. | • TP sensor | 3M
V | Ignition switch to the ON position • APP is released: Approx. 0.85 V Idle (after warm up) • Gradually depress the accelerator pedal while verifying that the voltage changes.
TP2 (TP sensor 2) | % | Ignition switch to the ON position • APP is released: Approx. 17% Idle (after warm up) • Gradually depress the accelerator pedal while verifying that the value changes. | • TP sensor | 3J
V | Ignition switch to the ON position • APP is released: Approx. 4.11 V Idle (after warm up) • Gradually depress the accelerator pedal while verifying that the voltage changes.
TPCT (Lowest closed throttle voltage) | V | Indicate the voltage of the closed TP sensor | • TP sensor | 3J 3M
VPWR (Module supply voltage)*5 | V | Indicate the Module supply voltage. | Inspect battery. | —
VSS (Vehicle speed) | KPH | MPH | Indicate the vehicle speed | • Perform applicable DTC troubleshooting. | —
VT ACT1 (Actual valve timing) | ° | Idle: Approx. 0° | • The following PIDs: ― TP, ECT, RPM • OCV | —
VT DIFF1 (Difference between actual valve timing and target valve timing) | ° | Idle: Approx. 0° | • The following PIDs: ― TP, ECT, RPM • OCV | 4S
VT DUTY1 | % | Idle: Approx. 11.5% | • The following PIDs: ― TP, ECT, RPM • OCV | 4S
WGC | % | Racing with the accelerator pedal fully depressed: 100 % | • Wastegate control solenoid valve | 4H
Fully closed: 0 %

*1 :Calculated value; differs from terminal voltage
*2 :Refrigerant pressure switch (middle) turns off when the refrigerant pressure is 1.26—1.49 MPa {12.9—15.1 kgf/cm6, 184—214 psi}
*3 :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}
*4 :Australian specs.
*5 :European (L.H.D. U.K.) specs.

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)

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Terminal | Signal | Connected to | Test condition | Voltage (V) | Inspection item
--- | --- | --- | --- | --- | ---
1A | High pressure fuel pump control (+) | High pressure fuel pump | Ignition switch OFF | Approx. 10.0 | • High pressure fuel pump • Related wiring harness Related wiring harness
Ignition switch ON | Approx. 9.6
Idle | Approx. 9.4
1B | High pressure fuel pump control (–) | High pressure fuel pump | Ignition switch OFF | Approx. 9.9 | • High pressure fuel pump • Related wiring harness Related wiring harness
Ignition switch ON | Approx. 9.7
Idle | Approx. 9.1
1C | GND | Body ground | Under any condition | Below 1.0 | • Related wiring harness
1D | Variable swirl solenoid valve power supply | Main relay | Ignition switch OFF after 90s | Bellow 1.0 | • Main relay • Related wiring harness
Ignition switch ON | B+
1E | — | — | — | — | —
1F | — | — | — | — | —
1G | — | — | — | — | —
1H | Clutch operation | Clutch switch | Clutch pedal depressed | Below 1.0 | • Clutch switch • Related wiring harness
Clutch pedal released | B+
1I | MAF sensor GND | MAF/IAT sensor | Under any condition | Below 1.0 | • MAF/IAT sensor • Related wiring harness
1J | Manifold absolute pressure | MAP sensor | Ignition switch ON (Engine off) at sea level | Approx. 1.9 | • MAP sensor • Related wiring harness
Idle | Approx. 0.7
1K | Brake (No. 1) | Brake switch No. 1 | Brake pedal depressed | B+ | • Brake switch • Related wiring harness
Brake pedal released | Below 1.0
1L | — | — | — | — | —
1M | ECT | ECT sensor | Ignition switch ON | ECT 20 °C {68 °F} | 3.04—3.14 | • ECT sensor • Related wiring harness
ECT 60 °C {140 °F} | 1.29—1.39
1N | Variable swirl shutter valve monitor | Variable swirl shutter valve switch | Engine speed is less than 3,250 rpm and ECT is less than 60°C {140 °F} | Below 1.0 | • Variable swirl shutter valve switch • Related wiring harness
Engine speed is 3,250 rpm or more, or ECT is 60°C {140 °F} or more | Approx. 5.0
1O | — | — | — | — | —
1P | MAF | MAF sensor | Ignition switch ON | Approx. 0.7 | • MAF sensor • Related wiring harness
Idle (after warm up) | 1.15—1.28
1Q | 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 wiring harness
Refrigerant pressure is below 1.23 MPa {12.5 kgf/cm2, 178 psi} | B+
1R | — | — | — | — | —
1S | Boost air temperature | MAP/Boost air temperature sensor | Ignition switch ON | IAT 20 °C {68 °F} | 2.4—2.6 | • Boost air temperature sensor • Related wiring harness
IAT 30 °C {86 °F} | 1.7—1.9
1T | — | — | — | — | —
1U | — | — | — | — | —
1V | Fuel pressure sensor | Fuel pressure sensor | Ignition switch OFF | Approx. 1.4 | • Fuel pressure sensor • Related wiring harness
Ignition switch ON | Approx. 1.5
Idle | Approx. 1.4
1W | Neutral position | Neutral switch | Shift lever is at neutral position | Below 1.0 | • Neutral switch • Related wiring harness
Shift lever is not at neutral position | B+
1X | — | — | — | — | —
1Y | HO2S | HO2S | Ignition switch ON | Below 1.0 | • HO2S • Related wiring harness
Voltage changes between 0 and 1 according to the amount of racing
1Z | PSP | PSP switch | Idle | Steering wheel at straight ahead position | B+ | • PSP switch • Power steering system • Related wiring harness
While turning steering wheel | Below 1.0
1AA | — | — | — | — | —
1AB | Generator output voltage | Generator (terminal P) | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Generator • Related wiring harness
1AC | A/C operation | Refrigerant pressure switch (high, low) | Idle | A/C switch and fan switch on | Below 1.0 | • Refrigerant pressure switch • Related wiring 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).) | • Following PIDs: IAT, ECT, RPM, VPWR, ALTT V. • Generator • Related wiring harness
2A | APP position (No. 2) | APP sensor No. 2 | Ignition switch ON | APP is released | Approx. 1.0 | • APP sensor • Related wiring harness
APP is depressed | Approx. 3.4
2B | Fuel injector check signal | Injector driver module | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Injector driver module • Related wiring harness
2C | CKP | CKP sensor | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • CKP sensor • Related wiring harness
2D | A/F sensor IP+ | A/F sensor | Idle (after warm up) | Approx. 3.7—3.9 | • A/F sensor • Related wiring harness
When the engine speed is increased, the voltage increased.
2E | CMP | CMP sensor | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • CMP sensor • Related wiring harness
2F | — | — | — | — | —
2G | A/F sensor VSIP | A/F sensor | Idle (after warm up) | Approx. 4.0 | • A/F sensor • Related wiring harness
2H | Sensor GND | MAF/IAT sensor, A/F sensor, HO2S, APP sensor, CKP sensor, CMP sensor, Fuel pressure sensor, ECT sensor, MAP sensor, purge solenoid valve | Under any condition | Below 1.0 | • Related wiring harness
2I | — | — | — | — | —
2J | A/F sensor power supply | A/F sensor | Idle (after warm up) | Approx. 4.1 | • A/F sensor • Related wiring harness
2K | Constant voltage (Vref) | MAP sensor, fuel pressure sensor, APP sensor | Ignition switch ON | Approx. 5.0 | • Related wiring harness
2L | — | — | — | — | —
2M | A/F sensor calibration resistor | A/F sensor | Ignition switch OFF after 90s | Approx. 0 | • A/F sensor • Related wiring harness
Ignition switch ON | Approx. 1.7
2N | — | — | — | — | —
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” • Related wiring harness
2Q | Coil (Immobilizer system) | Coil | Because this terminal is for communication, good/no good judgment by terminal voltage is not possible. | • Coil • Related wiring harness
2R | CAN (low) | Instrument cluster, DSC HU/CM, injector control module | Because this terminal is for CAN, good/no good judgment by terminal voltage is not possible. | • Related wiring 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” • Related wiring harness
2T | Coil (Immobilizer system) | Coil | Because this terminal is for communication, good/no good judgment by terminal voltage is not possible. | • Coil • Related wiring harness
2U | CAN (high) | Instrument cluster, DSC HU/CM, injector control module | Because this terminal is for CAN, good/no good judgment by terminal voltage is not possible. | • Related wiring harness
2V | IAT | MAF/IAT sensor | Ignition switch ON | IAT 20 °C {68 °F} | 2.4—2.6 | • IAT sensor • Related wiring harness
IAT 30 °C {86 °F} | 1.7—1.9
2W | Security light control | Instrument cluster (Security light) | Security light illuminate | Approx. 3.1 | • Related wiring harness
Others | B+
2X | Main relay control | Main relay | Ignition switch OFF after 90s | B+ | • Main relay • Related wiring harness
Ignition switch ON | Approx. 0.8
2Y | B+ | Main relay | Ignition switch OFF | Below 1.0 | • Battery • Related wiring harness
Ignition switch ON | B+
2Z | Back-up power supply | Battery (positive terminal) | Under any condition | B+ | • Battery • Related wiring harness
2AA | — | — | — | — | —
2AB | GND | Body ground | Under any condition | Below 1.0 | • Related wiring harness
2AC | GND | Body ground | Under any condition | Below 1.0 | • Related wiring harness
2AD | Ignition switch (IG1) | Ignition switch | Ignition switch OFF | Below 1.0 | • Ignition switch • Related wiring harness
Ignition switch ON | B+
3A | APP sensor GND | APP sensor | Under any condition | Below 1.0 | • Related wiring harness
3B | Fuel injection (#1) | Fuel injector No.1 | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Fuel injector No.1 • Related wiring harness
3C | Drive-by-wire-relay | Drive-by-wire-relay | Ignition switch OFF | Below 1.0 | • Drive-by-wire-relay • Related wiring harness
Ignition switch ON | Below 1.0
3D | APP position (No. 1) | APP sensor No. 1 | Ignition switch ON | APP is released | Approx. 1.6 | • APP sensor • Related wiring harness
APP is depressed | Approx. 3.9
3E | Fuel injection (#2) | Fuel injector No.2 | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Fuel injector No.2 • Related wiring harness
3F | — | — | — | — | —
3G | APP sensor 1 power | APP sensor | Under any condition | Approx. 5.0 | • APP sensor • Related wiring harness
3H | Fuel injection (#3) | Fuel injector No.3 | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Fuel injector No.3 • Related wiring harness
3I | — | — | — | — | —
3J | TP position (No. 2) | TP sensor No. 2 | Ignition switch to the ON position | APP is released | Approx. 4.11 | • TP sensor • Related wiring harness
Idle (after warm up) | Gradually depress the accelerator pedal while verifying that the voltage changes.
3K | Fuel injection (#4) | Fuel injector No.4 | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Fuel injector No.4 • Related wiring harness
3L | — | — | — | — | —
3M | TP position (No. 1) | TP sensor No. 1 | Ignition switch to the ON position | APP is released | Approx. 0.85 | • TP sensor • Related wiring harness
Idle (after warm up) | Gradually depress the accelerator pedal while verifying that the voltage changes.
3N | Injector control | Injector driver relay | Under any condition | Below 1.0 | • Related wiring harness
3O | — | — | — | — | —
3P | Constant voltage (vref) | TP sensor | Under any condition | Approx. 5.0 | • TP sensor • Related wiring harness
3Q | TP sensor GND | TP sensor | under any condition | Below 1.0 | • TP sensor • Related wiring harness
3R | — | — | — | — | —
3S | Cruise control | Cruise control switch | Ignition switch ON | Depressing ON/OFF | Approx. 0 | • Cruise control switch • Related wiring harness
Depressing CANCEL | Approx. 1.2
Depressing SET/COAST | Approx. 3.2
Depressing RES/ACCEL | Approx. 4.2
Others | Approx. 5.0
3T | Brake (No. 2) | Brake switch No. 2 | Brake pedal depressed | B+ | • Brake switch • Related wiring harness
Brake pedal released | Below 1.0
3U | — | — | — | — | —
3V | — | — | — | — | —
3W | IGT1 | Ignition coil (No.1 cylinders) | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Ignition coil • Related wiring harness
3X | IGT2 | Ignition coil (No.2 cylinders) | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Ignition coil • Related wiring harness
3Y | — | — | — | — | —
3Z | IGT3 | Ignition coil (No.3 cylinders) | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Ignition coil • Related wiring harness
3AA | IGT4 | Ignition coil (No.4 cylinders) | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Ignition coil • Related wiring harness
4A | Fan control module | Control module unit | Fan not operate | Approx. 0.5 | • Fan control module • Related wiring harness
Operation | Approx. 2.5
4B | — | — | — | — | —
4C | — | — | — | — | —
4D | EGR valve #1 coil control | EGR valve (terminal E) | Ignition switch ON | Below 1.0 | • EGR valve • Related wiring harness
Idle | Below 1.0
4E | — | — | — | — | —
4F | — | — | — | — | —
4G | EGR valve #3 coil control | EGR valve (terminal A) | Ignition switch ON | B+ | • EGR valve • Related wiring harness
Ignition switch OFF after 90s | Below 1.0
4H | Wastegate control solenoid valve | Wastegate control solenoid valve | Idle | B+ | • Wastegate control solenoid valve • Related wiring harness
When the turbocharger works | Approx. 0.3
4I | Starter relay control | Starter relay | Cranking | Below 1.0 | • Perform “On-Board Diagnostic Test” • Related wiring harness
4J | EGR valve #4 coil control | EGR valve (terminal B) | Ignition switch ON | B+ | • EGR valve • Related wiring harness
Ignition switch OFF after 90s | Below 1.0
4K | Variable swirl control | Variable swirl solenoid valve | Engine speed is less than 3,250 rpm and ECT is less than 60°C {140 °F} | Below 1.0 | • Variable swirl solenoid valve • Related wiring harness
Engine speed is 3,250 rpm or more, or ECT is 60°C {140 °F} or more | B+
4L | — | — | — | — | —
4M | EGR valve #6 coil control | EGR valve (terminal F) | Ignition switch ON | B+ | • EGR valve • Related wiring harness
Idle after 2s | B+
4N | A/C | A/C relay | A/C operating | Below 1.0 | • A/C relay • Related wiring harness
A/C not operating | B+
4O | — | — | — | — | —
4P | Fuel pump speed control relay | Fuel pump speed control relay | Relay is OFF | B+ | • Fuel pump relay • Related wiring harness
Relay is ON | Below 1.0
4Q | Fuel pump relay | Fuel pump relay | Ignition switch ON after 1s | B+ | • Fuel pump speed control relay • Related wiring harness
Cranking | Below 1.0
Idle | Below 1.0
4R | — | — | — | — | —
4S | OCV control | OCV | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • OCV • Related wiring harness
4T | Purge solenoid valve | Purge solenoid valve | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • Purge solenoid valve • Related wiring harness
4U | — | — | — | — | —
4V | Throttle valve power | Drive-by-wire-relay | Ignition switch OFF after 90s | Below 1.0 | • Throttle relay • Related wiring harness
Ignition switch ON | B+
4W | — | — | — | — | —
4X | GND | GND | Under any condition | Below 1.0 | • Related wiring harness
4Y | Throttle actuator control (+) | Throttle body | Ignition switch OFF | B+ | • Throttle actuator • Related wiring harness
Ignition switch ON | Approx. 1.5
4Z | HO2S heater control | HO2S heater | Engine speed below 4,000 rpm | Approx. 0.2 | • HO2S heater • Related wiring harness
Engine speed above 4,000 rpm and TP angle above 50% | B+
4AA | — | — | — | — | —
4AB | Throttle actuator control (–) | Throttle body | Ignition switch ON | B+ | • Throttle actuator • Related wiring harness
Ignition switch OFF | Approx. 1.5
4AC | GND | Body ground | Under any condition | Below 1.0 | • Related wiring harness
4AD | A/F sensor heater control | A/F sensor heater | • Inspect using the wave profile. (See Inspection Using An Oscilloscope (Reference).) | • A/F sensor • Related wiring harness

Inspection Using An Oscilloscope (Reference)

  Generator output voltage signal

  am6zzw00007996

  PCM terminals
    • 1AB(+)—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)

  Generator field coil control signal

  am6zzw00007997

  PCM terminals
    • 1AD(+)—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)

  Fuel injector check signal

  am6zzw00007998

  PCM terminals
    • 2B(+)—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)

  CKP sensor signal

  am6zzw00007999

  PCM terminals
    • 2C(+)—Body ground(–)
  Oscilloscope setting
    • 2 V/DIV (Y), 5 ms/DIV (X), DC range
  Vehicle condition
    • Idle after warm up (no load, P/S off, A/C off)

  CMP sensor signal

  am6zzw00008000

  PCM terminals
    • 2E(+)—Body ground(–)
  Oscilloscope setting
    • 2 V/DIV (Y), 50 ms/DIV (X), DC range
  Vehicle condition
    • Idle after warm up (no load, P/S off, A/C off)

  Fuel injection control

  am6zzw00008001

  PCM terminals
    • Fuel Injection No.1: 3B(+)—Body ground(–)
    • Fuel Injection No.2: 3E(+)—Body ground(–)
    • Fuel Injection No.3: 3H(+)—Body ground(–)
    • Fuel Injection No.4: 3K(+)—Body ground(–)
  Oscilloscope setting
    • 2 V/DIV (Y), 20 ms/DIV (X), DC range
  Vehicle condition
    • Idle after warm up (no load, P/S off, A/C off)

  IGT control signals

  am6zzw00008002

  PCM terminals
    • IGT1(No.1): 3W(+)—Body ground(–)
    • IGT2(No.2): 3X(+)—Body ground(–)
    • IGT3(No.3): 3Z(+)—Body ground(–)
    • IGT4(No.4): 3AA(+)—Body ground(–)
  Oscilloscope setting
    • 2 V/DIV (Y), 20 ms/DIV (X), DC range
  Vehicle condition
    • Idle after warm up (no load, P/S off, A/C off)

  OCV control signal

  am6zzw00008003

  PCM terminals
    • 4S(+)—Body ground(–)
  Oscilloscope setting
    • 2.5 V/DIV (Y), 1 ms/DIV (X), DC range
  Vehicle condition
    • Idle after warm up (no load, P/S off, A/C off)

  Purge control signal

  am6zzw00008004

  PCM terminals
    • 4T(+)—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)

  A/F sensor heater control signal

  am6zzw00008005

  PCM terminals
    • 4AD(+)—Body ground(–)
  Oscilloscope setting
    • 2.5 V/DIV (Y), 20 ms/DIV (X), DC range
  Vehicle condition
    • Idle after engine start (no load, P/S off, A/C off)