PCM INSPECTION [LF, L3]

id0140008025a6


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 (See CAMSHAFT POSITION (CMP) SENSOR INSPECTION [LF, L3].)
―  Main relay (See RELAY INSPECTION.)

1.  Connect the SST (WDS or equivalent) to the DLC-2.

am6zzw00008173

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
―  FAN1, FAN2, FAN3
―  FP
―  FUELPW1
―  GENVDSD
―  HTR11, HTR12
―  IAC
―  IASV
―  IMRC
―  IMTV
―  INJ_1, INJ_2, INJ_3, INJ_4
―  SEGRP
―  TEST
―  VT DUTY1

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, ACSW, TR.
Inspect A/C relay.
(See CLIMATE CONTROL UNIT INSPECTION)
4O
ACSW (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
Inspect A/C switch.
(See CLIMATE CONTROL UNIT INSPECTION)
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 [LF, 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 [LF, L3])
1AA
ARPMDES
(Target engine speed)
RPM
MTX
No load: 650 rpm
E/L operating: 700 rpm
P/S operating: 700 rpm
A/C ON: 750 rpm
ATX
No load: 700 rpm
E/L operating: 700 rpm
P/S operating: 700 rpm
A/C ON: 700 rpm*2, 750 rpm*3
Inspect following PIDs: IAT, RPM, MAP, ECT, MAF, TP, INGEAR, ACSW, TR, PSP, ALTT V.
Inspect IAC valve.
(See IDLE AIR CONTROL (IAC) VALVE INSPECTION [LF, L3])
Inspect CKP sensor.
(See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [LF, L3])
—
AST (After start timer)
Time
—
—
—
BOO
(Brake switch)
ON/OFF
Brake pedal depressed: ON
Brake pedal released: OFF
Inspect brake switch.
(See BRAKE SWITCH INSPECTION)
1K
CHRGLP (Generator warning light)
ON/OFF
Ignition switch ON: ON
Idle: OFF
Perform applicable DTC troubleshooting.
(See DTC TABLE [LF, L3])
—
COLP (Refrigerant pressure switch (middle))*4
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 clutch switch.
(See CLUTCH PEDAL POSITION (CPP) SWITCH INSPECTION [LF, L3])
1R
CPP/PNP (Shift lever position)
ON/OFF
Neutral position: ON
Others: OFF
Inspect neutral switch.
(See NEUTRAL SWITCH INSPECTION [LF, L3])
1W
DTCCNT (Number of DTC detected)
—
—
Perform applicable DTC troubleshooting.
(See DTC TABLE [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.
(See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [LF, 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 [LF, L3])
4U
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.
(See RELAY INSPECTION)
4L
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.
(See RELAY INSPECTION)
4F
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.
(See RELAY INSPECTION)
4B
FDPDTC
(Pending code caused FFD storage)
—
—
Perform applicable DTC troubleshooting.
(See DTC TABLE [LF, 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*6
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, ACSW, 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, ACSW, 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 [LF, L3])
—
HTR11*8
(HO2S heater (front))
ON/OFF
Idle (after warm up): ONÛOFF
Inspect following PIDs: IAT, MAF, TP, ECT, RPM, ACSW.
(See HEATED OXYGEN SENSOR (HO2S) INSPECTION [LF, L3])
4A
HTR12*8
(HO2S heater (rear))
ON/OFF
Ignition switch ON: ON (HO2S heater operated)
Idle: ON (HO2S heater operated)
Inspect following PIDs: IAT, MAF, ECT, RPM, ACSW.
(See HEATED OXYGEN SENSOR (HO2S) INSPECTION [LF, L3])
4D
IAC (IAC valve)
%
Ignition switch ON: 0%
Idle: Approx. 20% (ECT: approx. 90°C {194 °F} and E/L not operating)
Inspect following PIDs: IAT, RPM, MAP, ECT, MAF, TP, INGEAR, TR, PSP, ACSW.
Inspect IAC valve.
(See IDLE AIR CONTROL (IAC) VALVE INSPECTION [LF, L3])
4G, 4J
IASV*7
(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 control solenoid valve.
(See VARIABLE AIR DUCT (VAD) CONTROL SOLENOID VALVE INSPECTION [L3]
4C
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 [LF, L3])
2E
V
IAT 20 °C {68 °F}: 2.4—2.6 V
IAT 30 °C {86 °F}: 1.7—1.9 V
IMRC (Variable tumble control solenoid valve)
ON/OFF
Engine speed is below approx. 3,500 rpm: ON
Others: OFF
Inspect following PIDs: TP, ECT, RPM.
Inspect VTCS solenoid valve.
(See VARIABLE TUMBLE SOLENOID VALVE INSPECTION [LF, L3])
4T
IMTV*7 (Variable Intake-air control solenoid valve)
ON/OFF
Engine speed is below approx. 4,350 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
INGEAR (Load/no load condition)
ON/OFF
CPP or CPP/PNP is ON: OFF
Others: ON
Perform applicable DTC troubleshooting.
(See DTC TABLE [LF, L3])
1R, 1W
IVS (CTP condition)
ON/OFF
CTP: ON
Others: OFF
Perform applicable DTC troubleshooting.
(See DTC TABLE [LF, L3])
2A
KNOCKR (Knocking retard)
ANGLE
Ignition switch ON: 0 DEG
Idle: 0 DEG
Inspect knock sensor.
(See KNOCK SENSOR (KS) INSPECTION [LF, 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 [LF, L3])
—
LONGFT1*8 (long term fuel trim)
%
Idle (after warm up): approx.–14—14%
Perform applicable DTC troubleshooting.
(See DTC TABLE [LF, 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 [LF, L3]
1P
V
Ignition switch ON: approx. 0.7 V
Idle (After warm up): approx. 1.3 V
MAP (Manifold absolute pressure)
kPa
Ignition switch ON (At sea level): approx. 101 kPa
Inspect MAP sensor.
(See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION [LF, 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 [LF, L3])
—
MIL_DIS (Distance trabelled distance since the MIL illuminated)
Metreage
No DTC: 0 km {0 mph}
DTC detected: Not 0 km {0 mph}
Perform applicable DTC troubleshooting.
(See DTC TABLE [LF, L3])
—
O2S11*8
(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 [LF, L3])
1AB
O2S12*8
(Rear oxygen sensor)
V
Idle (After warm up): approx 0.6 V
Inspect HO2S (rear).
(See HEATED OXYGEN SENSOR (HO2S) INSPECTION [LF, 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 [LF, L3])
1Z
RFCFLAG (Readiness function code)
—
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.
(See OBD DRIVE MODE [LF, L3])
—
RO2FT1*8
(Rear oxygen sensor fuel trim)
—
Idle (After warm up): approx.–0.03—0.03
Perform applicable DTC troubleshooting.
(See DTC TABLE [LF, L3])
—
RPM (Engine speed)
rpm
MTX
No load: 600—700 rpm
E/L operating: 650—750 rpm
P/S operating: 650—750 rpm
A/C ON: 700—800 rpm
ATX
No load: 650—750 rpm
E/L operating: 650—750 rpm
P/S operating: 650—750 rpm
A/C ON: 650—750 rpm*2, 700—800 rpm*3
Inspect CKP sensor.
(See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [LF, L3])
2D, 2G
SEGRP*8
(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 [LF, L3])
4E, 4H, 4K, 4N
SHRTFT1*8
(Short term fuel trim)
%
Idle (After warm up): approx.–30—25%
Perform applicable DTC troubleshooting.
(See DTC TABLE [LF, L3])
—
SPARKADV (Ignition timing)
BTDC
Ignition switch ON: BTDC 0°
Idle: BTDC approx. 10°
Inspect following PIDs: MAF, TP, ECT, RPM, INGEAR, TR, PSP, ACSW, VPWR.
Inspect ignition timing.
(See IGNITION TIMING INSPECTION [LF, L3])
2J, 2M
TEST (Test mode)
ON/OFF
—
—
—
TP (TP)
%
CTP: 13—23%
WOT: 86—96%
Inspect TP sensor.
(See THROTTLE POSITION (TP) SENSOR INSPECTION [LF, 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 [LF, L3])
2A
VPWR (Battery positive voltage)
V
Ignition switch ON: B+
Inspect main relay.
(See RELAY INSPECTION)
Inspect battery.
(See BATTERY INSPECTION [LF, L3])
2Y, 2Z
VR V*9
(Variable resistor)
V
Ignition switch ON: 1—4 V
Inspect variable resistor.
(See IDLE MIXTURE INSPECTION [LF, L3])
Inspect battery.
(See BATTERY INSPECTION [LF, L3])
1AB
VSS (Vehicle speed)
km/h
MPH
Vehicle speed 20 km/h {12 mph}:
20 km/h {12 mph}
Vehicle speed 40 km/h {25 mph}:
20 km/h {12 mph}
Perform applicable DTC troubleshooting.
(See DTC TABLE [LF, L3])
2I, 2L
(MTX)
3C
(ATX)
VT DUTY1*7
ANGLE
Idle: 0°
Inspect following PIDs: TP, ECT, RPM.
Inspect OCV.
(See OIL CONTROL VALVE (OCV) INSPECTION [L3])
4M
%
Idle: 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/cm2, 184—214 psi}
*3  :Refrigerant pressure switch (Mddle) turns on when the refrigerant pressure is 1.69—1.84 MPa {17.3—18.7 kgf/cm2, 247—265 psi}
*4  :L3 and LF (Intensely hot area) engine models
*5  :Immobilizer system equipped
*6  :Immobilizer system not equipped
*7  :L3 engine models
*8  :Unleaded fuel models
*9  :Leaded fuel models
•  Following PIDs are for the ATX models. If inspects for following PIDs, (See PID/DATA MONITOR INSPECTION [EXCEPT FOR GENERAL (L.H.D.) SPECS. SPORT AT (FN4A-EL)].)
Following PIDs are for the ATX models. If inspects for following PIDs, (See PID/DATA MONITOR INSPECTION [GENERAL (L.H.D.) SPECS. SPORT AT (FN4A-EL)].)
PIDs for the ATX models
―  DWN SW
―  GEAR
―  LINEDES
―  LPS
―  MNL SW
―  OP_SW_B
―  SSA/SS1, SSB/SS2, SSC/SS3
―  TCS
―  TFT
―  TFTV
―  THOP
―  TR
―  TR_SENS
―  TSS
―  UP SW

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)

am6zzw00008174

Terminal

Signal

Connected to

Test condition

Voltage (V)

Action
1A
IGT1
Ignition coil (No. 1, 4 cylinders)
•  Inspect using the wave profile.
•  Inspect ignition coil
•  Inspect related harness
1B
IGT2
Ignition coil (No. 2, 3 cylinders)
•  Inspect using the wave profile.
•  Inspect ignition coil
•  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
—
—
—
—
—
1H
—
—
—
—
—
1I
—
—
—
—
—
1J
Manifold absolute pressure
MAP sensor
Ignition switch ON (Engine OFF)
Approx. 4.1
•  Inspect MAP sensor
•  Inspect related harness
Idle
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
•  Inspect related harness
ECT 60 °C
{140 °F}
1.29—1.39
1N
—
—
—
—
—
1O
—
—
—
—
—
1P
MAF
MAF sensor
Ignition switch ON
Approx. 0.7
•  Inspect MAF sensor
•  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
Below 1.0
•  Inspect refrigerant pressure switch
•  Inspect related harness
Refrigerant pressure is below 1.23 MPa
B+
1R*1
Clutch operation
Clutch switch
Clutch pedal depressed
Below 1.0
•  Inspect clutch switch
•  Inspect related harness
Clutch pedal released
B+
1S
—
—
—
—
—
1T
—
—
—
—
—
1U
—
—
—
—
—
1V
—
—
—
—
—
1W
Neutral position*1
Neutral switch
Shift lever is at neutral position
Below 1.0
•  Inspect neutral switch
•  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*3
M range*4
Approx. 2.5
S range*5
Approx. 1.7
L range*5
Approx. 0.94
1X
—
—
—
—
—
1Y*5
HO2S (Rear)
HO2S (Rear)
Ignition switch ON
Approx. 0
•  Inspect HO2S (rear)
•  Inspect related harness
Idle (After warm up)
0—1.0
1Z
PSP
PSP switch
Idle
Steering wheel at straight ahead position
B+
•  Inspect PSP switch
•  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.
•  Inspect generator
•  Inspect related harness
1AB
HO2S (Front)*5
HO2S (Front)
•  Inspect using the wave profile.
•  Inspect HO2S (front)
•  Inspect related harness
Variable resistor*6
Variable resistor
Varies according to the variable resistor adjustment
0—4
•  Inspect variable resistor
•  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.
•  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
•  Inspect related harness
WOT
4.3—4.8
2B
—
—
—
—
—
2C
—
—
—
—
—
2D
CKP (+)
CKP sensor
•  Inspect using the wave profile.
•  Inspect CKP sensor
•  Inspect related harness
2E
IAT
MAF/IAT sensor
Ignition switch ON
IAT 20 °C
{68 °F}
2.4—2.6
•  Inspect IAT sensor
•  Inspect related harness
IAT 30 °C
{86 °F}
1.7—1.9
2F
—
—
—
—
—
2G
CKP (–)
CKP sensor
•  Inspect using the wave profile.
•  Inspect CKP sensor
•  Inspect related harness
2H
Sensor GND
MAF/IAT sensor, HO2S (Front, Rear), Variable resistor, ECT sensor, TP sensor, MAP sensor, TFT sensor, TR switch
Under any condition
Below 1.0
•  Inspect related harness
2I*7
VSS (–)
VSS
•  Inspect using the wave profile.
•  Inspect VSS sensor
•  Inspect related harness
2J
CMP (+)
CMP sensor
•  Inspect using the wave profile.
•  Inspect CMP sensor
•  Inspect related harness
2K
Constant voltage (Vref)
MAP sensor, TP sensor, variable resistor
Ignition switch ON
Approx. 5.0
•  Inspect related harness
2L*7
VSS (+)
VSS
•  Inspect using the wave profile.
•  Inspect VSS sensor
•  Inspect related harness
2M
CMP (–)
CMP sensor
•  Inspect using the wave profile.
•  Inspect CMP sensor
•  Inspect related harness
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”
•  Inspect related harness
2Q*8
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, DSC 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”
•  Inspect related harness
2T*8
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
2U
CAN (+)
Instrument cluster, ABS HU/CM, ABS/TCS HU/CM, DSC HU/CM
Because this terminal is for CAN, good/no good judgment by terminal voltage is not possible.
•  Inspect related harness
2V
—
—
—
—
—
2W
Security light control
Instrument cluster (Security light)
Security light illuminate
Below 1.0
•  Inspect related harness
Others
B+
2X
Main relay control
Main relay
Ignition switch OFF
Below 1.0
•  Inspect main relay
•  Inspect related harness
Ignition switch ON
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.
•  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
—
—
—
—
—
3F
—
—
—
—
—
3G*2
Input/turbine speed sensor (+)
Input/turbine speed sensor
•  Inspect using the wave profile.
•  Inspect input/turbine speed sensor
•  Inspect related harness
3H
—
—
—
—
—
3I
—
—
—
—
—
3J*2
Input/turbine speed sensor (–)
Input/turbine speed sensor
•  Inspect using the wave profile.
•  Inspect input/turbine speed sensor
•  Inspect related harness
3K*2, 4
Manual down
Down switch
Ignition switch ON
Detects down-shift operation of selector lever in M range
Below 1.0
•  Inspect down switch
•  Inspect related harness
Others
B+
3L
—
—
—
—
—
3M
—
—
—
—
—
3N*2, 4
Manual up
Up switch
Ignition switch ON
Detects up-shift operation of selector lever in M range
Below 1.0
•  Inspect up switch
•  Inspect related harness
Others
B+
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*3
HOLD switch
Ignition switch ON
HOLD switch pushed
Below 1.0
•  Inspect HOLD switch
•  Inspect related harness
Others
B+
M range*4
M range switch
Ignition switch ON
Manual mode
Below 1.0
•  Inspect M range switch
•  Inspect related harness
Others
B+
3R
—
—
—
—
—
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.
•  Inspect pressure control solenoid valve
•  Inspect related harness
3W
—
—
—
—
—
3X
—
—
—
—
—
3Y*2
Pressure control solenoid (+)
Pressure control solenoid valve
•  Inspect using the wave profile.
•  Inspect pressure control solenoid valve
•  Inspect related harness
3Z
—
—
—
—
—
3AA
—
—
—
—
—
4A*4
HO2S (Front) heater control
HO2S (Front) heater
•  Inspect using the wave profile.
•  Inspect HO2S (Front) heater.
•  Inspect related harness
4B
Cooling fan control
Cooling fan relay
Idling
ECT below 100 °C {212 °F}
B+
•  Inspect cooling fan relay
•  Inspect related harness
A/C operating
Below 1.0
4C*4
VAD control
VAD control solenoid valve
Ignition switch ON
Engine speed below 5,800 rpm
B+
•  Inspect VAD control solenoid valve
•  Inspect related harness
Engine speed above 5,800 rpm
Below 1.0
4D*5
HO2S (Rear) heater control
HO2S (Rear) heater
Ignition switch ON
Engine speed below 4,000 rpm
B+
•  Inspect HO2S (Front) heater.
•  Inspect related harness
Engine speed above 4,000 rpm
Below 1.0
4E*5
EGR valve #1 coil control
EGR valve
(terminal E)
Ignition switch ON
Below 1.0
•  Inspect EGR valve
•  Inspect related harness
Idle
Below 1.0
4F*10
Cooling fan control
Cooling fan relay
Idling
ECT below 100 °C {212 °F}
B+
•  Inspect cooling fan relay
•  Inspect related harness
A/C operating and refrigerant pressure switch (Middle) ON
Below 1.0
4G
IAC (+)
IAC valve
•  Inspect using the wave profile.
•  Inspect IAC valve
•  Inspect related harness
4H*5
EGR valve #2 coil control
EGR valve
(Terminal A)
Ignition switch ON
B+
•  Inspect EGR valve
•  Inspect related harness
Idle
B+
4I
Starter relay control
Starter relay (MTX)
TR switch (ATX)
Under any condition
Below 1.0
•  Perform “On-Board Diagnostic Test”
•  Inspect related harness
4J
IAC (–)
IAC valve
•  Inspect using the wave profile.
•  Inspect IAC valve
•  Inspect related harness
4K*5
EGR valve #3 coil control
EGR valve (Terminal B)
Ignition switch ON
B+
•  Inspect EGR valve
•  Inspect related harness
Idle
B+
4L
Cooling fan control
Cooling fan relay
Idling
ECT below 100 °C {212 °F}
B+
•  Inspect cooling fan relay
•  Inspect related harness
A/C operating
Below 1.0
4M*4
OCV control
OCV
•  Inspect using the wave profile.
•  Inspect OCV valve
•  Inspect related harness
4N*5
EGR valve #4 coil control
EGR valve
(Terminal F)
Ignition switch ON
Below 1.0
•  Inspect EGR valve
•  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*9
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*8
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*4
VIS control
VIS control solenoid valve
Engine speed: above 4,500 rpm
B+
•  Inspect VIS solenoid valve
•  Inspect related harness
Engine speed: below 4,500 rpm
Below 1.0
4S
—
—
—
—
—
4T
Variable tumble control
Variable tumble control solenoid valve
ECT above 63 °C {145 °F} while idling.
B+
•  Inspect VIS solenoid valve
•  Inspect related harness
ECT below 63 °C {145 °F} and engine speed below 3,750 rpm
Below 1.0
4U
Purge control
Purge solenoid valve
•  Inspect using the wave profile.
•  Inspect purge solenoid valve
•  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.
•  Inspect fuel injector No.2
•  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.
•  Inspect shift solenoid C
•  Inspect related harness
4Z
Fuel injection (#1)
Fuel injector No.1
•  Inspect using the wave profile.
•  Inspect fuel injector No.1
•  Inspect related harness
4AA
Fuel injection (#4)
Fuel injector No.4
•  Inspect using the wave profile.
•  Inspect fuel injector No.4
•  Inspect related harness
4AB*2
Shift solenoid A control
Shift solenoid A
•  Inspect using the wave profile.
•  Inspect shift solenoid A
•  Inspect related harness
4AC*2
Shift solenoid B control
Shift solenoid B
•  Inspect using the wave profile.
•  Inspect shift solenoid B
•  Inspect related harness
4AD
Fuel injection (#3)
Fuel injector No.3
•  Inspect using the wave profile.
•  Inspect fuel injector No.3
•  Inspect related harness

*1  :MTX models
*2  :ATX models
*3  :LF engine models
*4  :L3 engine models
*5  :Unleaded fuel models
*6  :Leaded fuel models
*7  :MTX, without ABS models
*8  :Immobilizer system equipped
*9  :Immobilizer system not equipped
*10  :For Australian spec. LF engine models


Inspection Using An Oscilloscope (Reference)


IGT1, IGT2 control signals

am6zzw00008175
PCM terminals
•  IGT1(No.1 and No.4): 1A(+)—1D(–)
•  IGT2(No.2 and No.3): 1B(+)—1C(–)
Oscilloscope setting
•  4 V/DIV (Y), 0.01 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)


Generator output voltage signal

am6zzw00008176
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 [MTX] or 700 rpm [ATX], no load, P/S off, A/C off)


HO2S (front) signal

am6zzw00008177
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 [MTX], 700 rpm [ATX], no load, P/S off, A/C off)


Generator field coil control signal

am6zzw00008178
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 [MTX] or 700 rpm [ATX], no load, P/S off, A/C off)


CKP sensor signal

(+)

am6zzw00008179
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 [MTX] or 700 rpm [ATX], no load, P/S off, A/C off)

(–)

am6zzw00008180
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 [MTX] or 700 rpm [ATX], no load, P/S off, A/C off)


VSS signal

am6zzw00008181
PCM terminals
•  3C(+)—2AC(–)
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}


CMP sensor signal

L3 engine (+)

am6zzw00008182
PCM terminals
•  2J(+)—2H(–)
Oscilloscope setting
•  1 V/DIV (Y), 10 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)

LF engine (+)

am6zzw00008183
PCM terminals
•  2J(+)—2H(–)
Oscilloscope setting
•  1 V/DIV (Y), 10 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)

L3 engine (–)

am6zzw00008184
PCM terminals
•  2M(+)—2H(–)
Oscilloscope setting
•  1 V/DIV (Y), 10 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)

LF engine (–)

am6zzw00008185
PCM terminals
•  2M(+)—2H(–)
Oscilloscope setting
•  1 V/DIV (Y), 10 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)


Input/turbine speed sensor signal

am6zzw00008186
PCM terminals
•  3G(+)—2AC(–)
Oscilloscope setting
•  500 mV/DIV (Y), 1 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

(–)

am6zzw00008187
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 [MTX] or 700 rpm [ATX], no load, P/S off, A/C off)

(+)

am6zzw00008188
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 [MTX] or 700 rpm [ATX], no load, P/S off, A/C off)


HO2S (front) heater control signal

am6zzw00008189
PCM terminals
•  4A(+)—1C(–)
Oscilloscope setting
•  4 V/DIV (Y), 200 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)


IAC signal

(+)

am6zzw00008190
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 [MTX] or 700 rpm [ATX], no load, P/S off, A/C off)

(–)

am6zzw00008191
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 [MTX] or 700 rpm [ATX], no load, P/S off, A/C off)


Shift solenoid A control

PCM terminals
•  4J(+)—1C(–)
Oscilloscope setting
•  2 V/DIV (Y), 0.8 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)


OCV control signal

am6zzw00008192
PCM terminals
•  4J(+)—1C(–)
Oscilloscope setting
•  2 V/DIV (Y), 0.8 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)


Purge control signal

am6zzw00008193
PCM terminals
•  4U(+)—1C(–)
Oscilloscope setting
•  1 V/DIV (Y), 10 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)


Fuel injection control

am6zzw00008194
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
•  4 V/DIV (Y), 10 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)


Shift solenoid C control

am6zzw00008195
PCM terminals
•  4Y(+)—1C(–)
Oscilloscope setting
•  5 V/DIV (Y), 5 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)


Shift solenoid A control

am6zzw00008196
PCM terminals
•  4AB(+)—1C(–)
Oscilloscope setting
•  5 V/DIV (Y), 5 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)


Shift solenoid B control

am6zzw00008197
PCM terminals
•  4AC(+)—1C(–)
Oscilloscope setting
•  5 V/DIV (Y), 5 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)