PCM INSPECTION [L3]

id0140a7802500


Using SST (M-MDS)

Note
•  PIDs for the following parts are not available on this model. Go to the appropriate part inspection page.
―  CMP sensor
―  Main relay

1.  Connect the SST (M-MDS) to the DLC-2.

atraaw00002437

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, FP, FUELPW1, GENVDSD, HTR11, HTR12, IMRC, IMTV, INJ_1, INJ_2, INJ_3, INJ_4, LPS, SEGRP, SOL 12S, SOL 23S, SOL 32T, SOL 34S, SOL TCC, test, VT DUTY1 Wt

PID/DATA monitor table (reference)

Monitor item (Definition)

Unit/Condition

Condition/Specification (Reference)

Action

PCM terminal
AC_REQ
(A/C request signal)
ON/OFF
A/C switch and fan switch ON at ignition switch ON: On
A/C switch OFF at ignition switch ON: Off
Inspect A/C switch.
1AP
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, ECT, TR.
Inspect A/C relay.
1AN
AFR (Air/fuel ratio)
—
Target air-oil ratio is displayed
•  A/F sensor
2Z
2AC
2AD
AFR_ACT
(Actual air/fuel ratio)
—
Actual air-oil ratio is displayed
•  A/F sensor
2Z
2AC
2AD
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.
2AQ
ALTT V
(Generator output voltage)
V
Ignition switch ON: 0 V
Idle: Approx. 14.9 V*1 (E/L not operating)
Inspect generator.
2AM
APP
(Accelerator pedal position)
%
APP released: 0%
APP open: 100%
Inspect following PIDs: APP1, APP2.
Inspect accelerator pedal position sensor.
1Y
1AG
APP1
(Accelerator pedal position sensor 1)
%
APP released: 31.0—32.4%
APP open: 69.8—81.8%
Inspect accelerator pedal position sensor.
1Y
V
APP released: Approx. 1.58 V
APP depressed: Approx. 3.90 V
APP2
(Accelerator pedal position sensor 2)
%
APP released: 20.2—21.4%
APP depressed: 58.8—70.8%
Inspect accelerator pedal position sensor.
1AG
V
APP released: Approx. 1.03 V
APP depressed: Approx. 3.35 V
ARPMDES
(Target engine speed)
RPM
No load: 650—750 rpm
E/L operating: 650—750 rpm
P/S operating: 650—750 rpm
A/C ON: 650—750 rpm
Inspect following PIDs: IAT, RPM, MAP, ECT, MAF, INGEAR, TR, PSP, ALTT V.
Inspect CKP sensor.
—
BOO
(Brake switch)
ON/OFF
Brake pedal depressed: ON
Brake pedal released: OFF
Inspect brake switch.
1AU
BPA
(Brake pressure applied switch)
ON/OFF
Brake pedal depressed: ON
Brake pedal released: OFF
Inspect brake switch.
—
CATT11_DSD
(Desired catalyst temperature bank one, sensor one)
°C
Indicate the estimated catalytic converter temperature
Perform applicable DTC troubleshooting.
(See DTC TABLE [L3].)
—
CHRGLP
(Generator warning light)
ON/OFF
Ignition switch ON: ON
Idle: OFF
Perform applicable DTC troubleshooting.
(See DTC TABLE [L3].)
—
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
Inspect refrigerant pressure switch.
1R
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.
2AK
V
ECT 20 °C {68 °F}: 3.04—3.14 V
ECT 60 °C {140 °F}: 1.29—1.39 V
EQ_RAT11
(Equivalence ratio (lambda))
—
Idling after warm-up: Approx. 1
Perform applicable DTC troubleshooting.
(See DTC TABLE [L3].)
2Z
2AC
2AD
EQ_RAT11_DSD
(Desired equivalence ratio (lambda))
—
Idling after warm-up: Approx. 1
Perform applicable DTC troubleshooting.
(See DTC TABLE [L3].)
—
ETC_ACT
(Electronic throttle control actual)
°
Indicate the desired TP by angle
Perform applicable DTC troubleshooting.
(See DTC TABLE [L3].)
2A
2B
ETC_DSD
(Electronic throttle control desired)
%
Indicate the desired TP by percent
Inspect following PIDs:APP1, APP2, ETC_ACT.
Inspect TP sensor.
—
°
Indicate the desired TP by angle
EVAPCP
(Purge solenoid valve duty value)
%
Ignition switch ON: 0%
Idle: 0%
Inspect following PIDs: IAT, RPM, ECT, MAF, O2S11, INGEAR, TR, VPWR.
2AN
FAN1
(Cooling fan control)
ON/OFF
ECT below 100 °C {212 °F}: OFF
Others: ON
Inspect following PIDs: RPM, ECT, COLP, test.
Inspect cooling fan relay.
1D
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, ECT, COLP, test.
Inspect cooling fan relay.
1W
FP
(Fuel pump relay)
ON/OFF
Ignition switch ON: OFF
Idle: ON
Cranking: ON
Inspect following PIDs: RPM.
Inspect fuel pump relay.
1AR*4
1AQ*5
FUELPW
(Fuel injector duration)
ms
Ignition switch ON: 0 ms
Idle (after warm up): approx. 2.5 ms
Inspect following PIDs: IAT, MAF, MAP, ECT, RPM, O2S11, O2S12, INGEAR, TR, PSP, VPWR, ALTT V.
Inspect fuel injector.
2AZ
2BB
2BC
2BD
FUELSYS
(Fuel system status)
OL/CL/OL-Drive/OL-Fault/CL-Fault
Ignition switch ON: OL_Drive
Idle (after warm up): CL
Inspect following PIDs: IAT, MAF, MAP, ECT, RPM, O2S11, O2S12, INGEAR, TR, PSP, VPWR, ALTT V.
Inspect fuel injector.
—
GEAR
(See PID/DATA MONITOR INSPECTION [GF4AX-EL])
GENVDSD
(Generator voltage desired)
V
Ignition switch ON: 0 V
Idle: Approx. 14.9 V (E/L not operating)
Perform applicable DTC troubleshooting.
(See DTC TABLE [L3].)
—
HTM_CNT
(See PID/DATA MONITOR INSPECTION [GF4AX-EL])
HTM_DIS
(See PID/DATA MONITOR INSPECTION [GF4AX-EL])
HTR11
(A/F sensor heater)
ON/OFF
Idle (after warm up): ONÛOFF
Inspect following PIDs: IAT, MAF, ECT, RPM.
2G
HTR12
(HO2S heater)
ON/OFF
Ignition switch ON: OFF (HO2S heater not operating)
Idle: ON (HO2S heater operating)
Inspect following PIDs: IAT, MAF, ECT, RPM.
2C
IAT
(Intake air temperature)
°C
°F
Indicate the IAT.
Inspect IAT sensor.
1AH
V
IAT 20 °C {68 °F}: 2.4—2.6 V
IAT 30 °C {86 °F}: 1.7—1.9 V
IMRC
(Variable tumble solenoid valve)
ON/OFF
ECT below 63 °C {145 °F} and engine speed is below approx. 3,750 rpm: ON
Others: OFF
Inspect following PIDs: ECT, RPM.
Inspect variable tumble solenoid valve.
2AI
IMTV
(Variable Intake air control solenoid valve)
ON/OFF
Engine speed is below approx. 4,600 rpm: ON
Others: OFF
Inspect following PIDs: RPM.
Inspect VIS control solenoid valve.
2AJ
INGEAR
(Load/no load condition)
ON/OFF
Driving range: OFF
Others: ON
Perform applicable DTC troubleshooting.
—
IVS
(CTP condition)
IDLE/ OFF IDLE
CTP: IDLE
Others: OFF IDLE
Perform applicable DTC troubleshooting.
2M
2I
KNOCKR
(Knocking retard)
°
Ignition switch ON: 0°
Idle: 0°
Inspect knock sensor.
2Q
2R
LINEDES
(See PID/DATA MONITOR INSPECTION [GF4AX-EL])
LOAD
(Engine load)
%
Ignition switch ON: 0%
Idle (after warm up): approx.19%
Inspect MAF sensor.
—
LONGFT1
(long term fuel trim)
%
Idle (after warm up): approx. –14—14%
Perform applicable DTC troubleshooting.
(See DTC TABLE [L3].)
—
LPS
(Pressure control solenoid)
(See PID/DATA MONITOR INSPECTION [GF4AX-EL])
MAF
(Mass airflow)
g/s
Ignition switch ON: approx. 0 g/s
Idle (after warm up): approx. 1.5 g/s
Inspect MAF sensor.
1AC
V
Ignition switch ON: approx. 0.7 V
Idle (after warm up): approx. 1.3 V
MAP
(Manifold absolute pressure)
kPa, inHg
Ignition switch ON (at sea level): approx. 101 kPa {29.8 inHg}
Inspect MAP sensor.
2AL
V
Ignition switch ON (at sea level): approx. 4.1 V
Idle (after warm up): approx. 1.4 V
MIL
(Malfunction indicator lamp)
ON/OFF
Ignition switch ON: ON
Idle: OFF
Perform applicable DTC troubleshooting.
(See DTC TABLE [L3].)
—
MIL_DIS
(Travelled distance since the MIL illuminated)
km, mile
No DTC: 0 km {0 mile}
DTC detected: Not 0 km {0 mile}
Perform applicable DTC troubleshooting.
(See DTC TABLE [L3].)
—
NUMKEYS
(Number of keys stored in module)
—
Indicate the number of the keys stored module
—
—
O2S11
(A/F sensor)
A
Ignition switch ON: -1.0— 1.0 A
Idle (After warm up): 0.25 A more
Inspect A/F sensor.
2Z
2AC
2AD
O2S12
(HO2S)
V
Idle (After warm up): 0— 1.0 V
Inspect HO2S.
2AH
PSP
(Power steering pressure switch)
Low/High
Steering wheel in straight ahead position: Low
Others: High
Inspect PSP switch.
2S
RO2FT1
(HO2S fuel trim)
—
Idle (after warm up): approx. –0.03—0.03
Perform applicable DTC troubleshooting.
—
RPM
(Engine speed)
rpm
Indicate the engine speed
Inspect CKP sensor.
2U
SCCS
(Speed control command switch)
—
—
—
—
SEGRP
(EGR valve (stepping motor) position)
—
Ignition switch ON: 0 step
Idle: 0 step
Cranking: 0—60 steps
Inspect following PIDs: MAF, ECT, RPM, VSS.
Inspect EGR valve.
2AU
2AR
2AY
2AV
SEGRP DSD
(Desired SEGRP valve position)
%
Idle: 0%
Inspect following PIDs: MAF, ECT, RPM, VSS.
—
SELTESTDTC
(Diagnostic trouble codes)
—
—
Perform applicable DTC troubleshooting.
(See DTC TABLE [L3].)
—
SHRTFT1
(Short term fuel trim)
%
Idle (after warm up): approx.–30—25%
Perform applicable DTC troubleshooting.
(See DTC TABLE [L3].)
—
SHRTFT12
(Short term fuel trim bank 1 sensor 2)
%
Idle (after warm up): Approx.–30—25%
Perform applicable DTC troubleshooting.
(See DTC TABLE [L3].)
—
SOL 12S
(Shift solenoid A)
(See PID/DATA MONITOR INSPECTION [GF4AX-EL])
SOL 23S
(Shift solenoid B)
(See PID/DATA MONITOR INSPECTION [GF4AX-EL])
SOL 32T
(3-2 timing solenoid valve)
(See PID/DATA MONITOR INSPECTION [GF4AX-EL])
SOL 34S
(Shift solenoid C)
(See PID/DATA MONITOR INSPECTION [GF4AX-EL])
SOL TCC
(TCC control solenoid valve)
(See PID/DATA MONITOR INSPECTION [GF4AX-EL])
SPARKADV
(Ignition timing)
°
Ignition switch ON: BTDC 0°
Idle: BTDC approx. 8°
Inspect following PIDs: MAF, ECT, RPM, INGEAR, TR, PSP, VPWR.
Inspect ignition timing.
2BE
2BF
2BG
2BH
TCIL
(O/D OFF indicator light)
(See PID/DATA MONITOR INSPECTION [GF4AX-EL])
TCS
(O/D OFF switch)
(See PID/DATA MONITOR INSPECTION [GF4AX-EL])
test
(Test mode)
ON/OFF
—
—
—
TFT
(Transaxle fluid temperature)
(See PID/DATA MONITOR INSPECTION [GF4AX-EL])
TFTV
(Transaxle fluid signal voltage)
(See PID/DATA MONITOR INSPECTION [GF4AX-EL])
TIRESIZE
(Tire Size (rev / mile))
rev/mile
Indicate the tire circumference length
—
—
TP REL
(Relative throttle position)
%
APP released: Approx. 10%
APP depressed: Approx. 93%
Inspect TP sensor.
—
TP 1
(TP sensor 1)
%
APP released: 8—12%
APP depressed: 88—94%
Inspect TP sensor.
2M
V
CTP: 0.4—0.6 V
WOT: 4.4—4.7 V
TP 2
(TP sensor 2)
%
APP released: 88—92%
APP depressed: 6—12%
Inspect TP sensor.
2I
V
CTP: 4.4—4.6 V
WOT: 0.3—0.6 V
TPCT
(TP sensor voltage at CTP)
V
Approx. 0.5 V
Inspect TP sensor.
2I
2M
TR
(Transaxle range)
(See PID/DATA MONITOR INSPECTION [GF4AX-EL])
TRD
(TR switch D range)
(See PID/DATA MONITOR INSPECTION [GF4AX-EL])
TRL
(TR switch 1 range)
(See PID/DATA MONITOR INSPECTION [GF4AX-EL])
TRN
(TR switch N range)
(See PID/DATA MONITOR INSPECTION [GF4AX-EL])
TRP
(TR switch P range)
(See PID/DATA MONITOR INSPECTION [GF4AX-EL])
TRR
(TR switch R position)
(See PID/DATA MONITOR INSPECTION [GF4AX-EL])
TRS
(TR switch 2 range)
(See PID/DATA MONITOR INSPECTION [GF4AX-EL])
TSS
(Input/turbine speed)
(See PID/DATA MONITOR INSPECTION [GF4AX-EL])
VPWR
(Battery positive voltage)
V
Indicate the battery voltage
•  Battery
1BA
VSS
(Vehicle speed)
kph, mph
Vehicle speed 20 kph {12 mph}:
20 kph {12 mph}
Vehicle speed 40 kph {25 mph}:
20 kph {12 mph}
Perform applicable DTC troubleshooting.
(See DTC TABLE [L3].)
—
VT ACT1
(Actual valve timing)
°
Idle: Approx. 0°
Inspect following PIDs: ECT, RPM.
Inspect OCV.
2AF
VT DIFF1
(Difference between target and actual valve timing)
°
Idle: Approx. 0°
Inspect following PIDs: ECT, RPM.
Inspect OCV.
2AF
VT DUTY1
(Oil control valve duty value)
%
Idle: Approx. 11.5%
Inspect following PIDs: ECT, RPM.
Inspect OCV.
2AF

*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  :With immobilizer system
*5  :Without immobilizer system

Without Using the SST

Note
•  The PCM terminal voltage can vary with the conditions when measuring and changes due to aged deterioration on the vehicle, causing false diagnosis. Therefore determine comprehensively where the malfunction occurs among the input systems, output systems, and the PCM.
atraaw00001270

Terminal

Signal

Connected to

Test condition

Voltage (V)

Inspection item
1A
Battery voltage
Main relay
Ignition switch to the ON position
B+
•  Main relay
•  Battery
•  Related wiring harness
Ignition switch off after 90 s
Below 1.0
1B
Pressure control solenoid
Pressure control solenoid
Ignition switch ON
Below 1.0
•  Pressure control solenoid
•  Related wiring harness
Idle (after warm up)
B+
1C
3-2 timing solenoid
3-2 timing solenoid
Idle
Changing the speed
B+
•  3-2 timing solenoid
•  Related wiring harness
1D
Cooling fan control (Main)
Cooling fan relay No.1
Idle
Cooling fan operate
Below 1.0
•  Cooling fan relay No.1
•  Related wiring harness
Cooling fan not operate
B+
1E
Shift solenoid A
Shift solenoid A
Idle
D range,
2 range
B+
•  Shift solenoid A
•  Related wiring harness
1F
Shift solenoid B
Shift solenoid B
Idle
1GR, 2GR
B+
•  Shift solenoid B
•  Related wiring harness
1G
Shift solenoid C
Shift solenoid C
Idle
D range
B+
•  Shift solenoid C
•  Related wiring harness
1H
TCC control solenoid
TCC control solenoid
Operation TCC
B+
•  TCC control solenoid
•  Related wiring harness
1I
APP sensor ground
APP sensor
Under any condition
Below 1.0
•  Related wiring harness
1J
Transaxle range switch
Transaxle range switch
Ignition switch is turned to the ON position.
R range
B+
•  Transaxle range switch
•  Related wiring harness
1K
Transaxle range switch
Transaxle range switch
Ignition switch is turned to the ON position.
1 range
B+
•  Transaxle range switch
•  Related wiring harness
1L
Transaxle range switch
Transaxle range switch
Ignition switch is turned to the ON position.
D range
B+
•  Transaxle range switch
•  Related wiring harnesses
1M
Input/turbine speed sensor (+)
Input/turbine speed sensor
•  Inspect using the wave profile.
•  Input/turbine speed sensor
•  Related wiring harness
1N
Transaxle range switch
Transaxle range switch
Ignition switch is turned to the ON position.
P range
B+
•  Transaxle range switch
•  Related wiring harnesses
1O
O/D OFF
O/D OFF
Ignition switch is turned to the ON position.
D3 range
Below 1.0
•  Selector lever
•  Related wiring harness
Except above
B+
1P
Transaxle range switch
Transaxle range switch
Ignition switch is turned to the ON position.
2 range
B+
•  Transaxle range switch
•  Related wiring harnesses
1Q
Input/turbine speed sensor (–)
Input/turbine speed sensor
•  Inspect using the wave profile.
•  Input/turbine speed sensor
•  Related wiring harness
1R
Refrigerant pressure switch (medium)
Refrigerant pressure switch (medium)
A/C ON
Refrigerant pressure is above 1.52 MPa {15.5 kgf/cm2, 220 psi}
Below 1.0
•  Refrigerant pressure switch (medium)
•  Related wiring harness
Refrigerant pressure is below 1.23 MPa {12.5 kgf/cm2, 178 psi}
B+
1S
Transaxle range switch
Transaxle range switch
Ignition switch is turned to the ON position.
N range
B+
•  Transaxle range switch
•  Related wiring harnesses
1T
—
—
—
—
—
1U
ATF temperature
TFT sensor
Ignition switch is turned to the ON position.
TFT is 20 °C {68 °F}
Approx. 3.5
•  TFT sensor
•  Related wiring harness
TFT is 40 °C {104 °F}
Approx. 2.7
TFT is 60 °C {140 °F}
Approx. 1.9
1V
—
—
—
—
—
1W
Cooling fan control (Transfer)
Cooling fan relay No.2, No.3
Idle
Cooling fan operate
Below 1.0
•  Cooling fan relay No.2, No.3
•  Related wiring harness
Cooling fan not operate
B+
1X
—
—
—
—
—
1Y
APP sensor 1
APP sensor
Ignition switch to the ON position
When the accelerator pedal is depressed
Approx. 3.90
•  APP sensor
•  Related wiring harness
When the accelerator pedal is released
Approx. 1.58
1Z
—
—
—
—
—
1AA
APP sensor ground
APP sensor
Under any condition
Below 1.0
•  Related wiring harness
1AB*1
Starter relay control
Starter relay
Under any condition
Below 1.0
•  Starter relay
•  Related wiring harness
1AC
MAF
MAF sensor
Ignition switch to the ON position
Approx. 0.7
•  MAF sensor
•  Related wiring harness
Idle (after warm up)
Approx. 1.3
1AD
—
—
—
—
—
1AE
Sensor ground
TFT sensor
APP sensor
Ignition switch to the ON position
Below 1.0
•  Related wiring harness
1AF
—
—
—
—
—
1AG
APP sensor 2
APP sensor
Ignition switch to the ON position
When the accelerator pedal is depressed
Approx. 3.35
•  APP sensor
•  Related wiring harness
When the accelerator pedal is released
Approx. 1.03
1AH
IAT
MAF/IAT sensor
Ignition switch to the ON position
IAT 20 °C
{68 °F}
2.4—2.6
•  IAT sensor
•  Related wiring harness
IAT 30 °C
{86 °F}
1.7—1.9
1AI
CAN (L)
Instrument cluster, ABS HU/CM,
EHPAS control module
Because this terminal is for CAN, good/no good judgment by terminal voltage is not possible.
•  Related wiring harness
1AJ
—
—
—
—
—
1AK
Constant voltage (Vref)
APP sensor
Ignition switch to the ON position
Approx. 5.0
•  Related wiring harness
1AL
—
—
—
—
—
1AM
CAN (H)
Instrument cluster, ABS HU/CM,
EHPAS control module
Because this terminal is for CAN, good/no good judgment by terminal voltage is not possible.
•  Related wiring harness
1AN
A/C
A/C relay
Idle
(after warm up)
A/C operating
Below 1.0
•  A/C relay
•  Related wiring harness
A/C not operating
B+
1AO*1
Coil (Immobilizer system)
Coil
Because this terminal is for communication, good/ no good judgment by terminal voltage is not possible.
•  Coil
•  Related wiring harness
1AP
A/C on signal
Refrigerant pressure switch (high and low)
Idle
(after warm up)
A/C switch and fan switch on
Below 1.0
•  Refrigerant pressure switch (high and low)
•  Related wiring harness
1AQ*2
Fuel pump control
Fuel pump relay
Ignition switch to the ON position after 1 s
B+
•  Fuel pump relay
•  Related wiring harness
Cranking
Below 1.0
Idle (after warm up)
Below 1.0
1AR*1
Fuel pump control
Fuel pump relay
Ignition switch to the ON position after 1 s
B+
•  Fuel pump relay
•  Related wiring harness
Cranking
Below 1.0
Idle (after warm up)
Below 1.0
1AS*1
Coil (Immobilizer system)
Coil
Because this terminal is for communication, good/ no good judgment by terminal voltage is not possible.
•  Coil
•  Related wiring harness
1AT
Main relay control
Main relay
Ignition switch off after 90 s
B+
•  Main relay
•  Related wiring harness
Ignition switch to the ON position
Below 1.0
1AU
Brake
Brake switch
Brake pedal depressed
B+
•  Brake switch
•  Related wiring harness
Brake pedal released
Below 1.0
1AV
—
—
—
—
—
1AW
Constant voltage (Vref)
APP sensor
Ignition switch to the ON position
Approx. 5.0
•  Related wiring harness
1AX
Ignition switch
Ignition switch
Ignition switch off
Below 1.0
•  Ignition switch
•  Related wiring harness
Ignition switch to the ON position
B+
1AY
Drive-by-wire relay
Drive-by-wire relay
Ignition switch off
B+
•  Dirve-by-wire relay
•  Related wiring harness
Ignition switch to the ON position
Below 1.0
1AZ
Ground
Ground
Under any condition
Below 1.0
•  Related wiring harness
1BA
Back-up power supply
Battery
Under any condition
B+
•  Battery
•  Related wiring harness
1BB
Ground
Ground
Under any condition
Below 1.0
•  Related wiring harness
1BC
Sensor ground
MAF/IAT sensor
Under any condition
Below 1.0
•  Related wiring harness
1BD
Ground
Ground
Under any condition
Below 1.0
•  Related wiring harness
1BE
B+
Main relay
Ignition switch off after 9 s
Below 1.0
•  Battery
•  Main relay
•  Related wiring harness
Ignition switch to the ON position
B+
1BF
Drive-by-wire relay
Drive-by-wire relay
Ignition switch off after 9 s
Below 1.0
•  Dirve-by-wire relay
•  Related wiring harness
Ignition switch to the ON position
B+
1BG*1
Security light control
Instrument cluster (Security light)
Ignition switch to the ON position
B+
•  Related wiring harness
1BH
Ground
Ground
Under any condition
Below 1.0
•  Related wiring harness
2A
Throttle actuator control (+)
Throttle actuator
Ignition switch to the ON position
B+
•  Throttle actuator
•  Related wiring harness
2B
Throttle actuator control (–)
Throttle actuator
Idle (after warm up)
B+
•  Throttle actuator
•  Related wiring harness
2C
HO2S heater control
HO2S heater
Idle (after warm up)
Below 1.0
•  HO2S heater
•  Related wiring harness
Engine speed above 4,000 rpm
B+
2D
—
—
—
—
—
2E
—
—
—
—
—
2F
—
—
—
—
—
2G
A/F sensor heater control
A/F sensor heater
•  Inspect using the wave profile.
•  A/F sensor heater
•  Related wiring harness
2H
—
—
—
—
—
2I
TP (No. 2)
TP sensor
Ignition switch to the ON position
CTP
4.4—4.6
•  TP sensor
•  Related wiring harness
WOT
0.3—0.6
2J
—
—
—
—
—
2K
Constant voltage (Vref)
TP sensor
Ignition switch to the ON position
Approx. 5.0
•  TP sensor
•  Related wiring harness
2L
—
—
—
—
—
2M
TP (No. 1)
TP sensor
Ignition switch to the ON position
CTP
0.4—0.6
•  TP sensor
•  Related wiring harness
WOT
4.4—4.7
2N
—
—
—
—
—
2O
TP sensor ground
TP sensor
Under any condition
Below 1.0
•  Related wiring harness
2P
—
—
—
—
—
2Q
Knocking (+)
KS
Ignition switch to the ON position (Use digital type voltmeter, because measurement voltage will be detected less than true voltage when using analog type voltmeter)
Approx. 4.3
•  KS
•  Related wiring harness
2R
Knocking (–)
KS
Ignition switch to the ON position (Use digital type voltmeter, because measurement voltage will be detected less than true voltage when using analog type voltmeter)
Below 1.0
•  KS
•  Related wiring harness
2S
PSP
PSP switch
Idle
Steering wheel at straight ahead position
B+
•  PSP switch
•  Related wiring harness
While turning steering wheel
Below 1.0
2T
Constant voltage
CKP sensor
Ignition switch to the ON position
B+
•  Related wiring harness
2U
CKP
CKP sensor
•  Inspect using the wave profile.
•  CKP sensor
•  Related wiring harness
2V
CMP
CMP sensor
•  Inspect using the wave profile.
•  CMP sensor
•  Related wiring harness
2W
—
—
—
—
—
2X
Constant voltage
CMP sensor
Ignition switch to the ON position
B+
•  Related wiring harness
2Y
—
—
—
—
—
2Z
A/F sensor power supply
A/F sensor
Idle (after warm up)
Approx. 4.0
•  Related wiring harness
2AA
Sensor ground
HO2S
Under any condition
Below 1.0
•  Related wiring harness
2AB
Internal ground
KS, A/F sensor
Under any condition
Below 1.0
•  Related wiring harness
2AC
A/F sensor VSIP
A/F sensor
Idle (after warm up)
Approx. 3.6
•  A/F sensor
•  Related wiring harness
2AD
A/F sensor IP+
A/F sensor
Idle
Approx. 3.8
•  A/F sensor
•  Related wiring harness
After racing
Approx. 3.1
2AE
—
—
—
—
—
2AF
OCV control
OCV
•  Inspect using the wave profile.
•  OCV
•  Related wiring harness
2AG
—
—
—
—
—
2AH
HO2S
HO2S
Ignition switch to the ON position
Approx. 0
•  HO2S
•  Related wiring harness
Idle (after warm up)
Alternates between 0 and 1.0
2AI
Variable tumble control
Variable tumble solenoid valve
Idle (after warm up)
B+
•  Variable tumble solenoid valve
•  Related wiring harness
ECT below 63 °C {145 °F} and engine speed below 3,750 rpm
Below 1.0
2AJ
Variable intake air control
Variable intake air solenoid valve
Engine speed: below 4,600 rpm
Below 1.0
•  Variable intake air solenoid valve
•  Related wiring harness
Engine speed: above 4,600 rpm
B+
2AK
ECT
ECT sensor
Ignition switch to the ON position
ECT 20 °C
{68 °F}
3.04—3.14
•  ECT sensor
•  Related wiring harness
ECT 60 °C
{140 °F}
1.29—1.39
2AL
Manifold absolute pressure
MAP sensor
Ignition switch to the ON position (at sea level)
Approx. 4.1
•  MAP sensor
•  Related wiring harness
Idle (after warm up)
Approx. 1.4
2AM
Generator output voltage
Generator
•  Inspect using the wave profile.
•  Generator
•  Related wiring harness
2AN
Purge control
Purge solenoid valve
•  Inspect using the wave profile.
•  Purge solenoid valve
•  Related wiring harness
2AO
—
—
—
—
—
2AP
—
—
—
—
—
2AQ
Generator field coil control
Generator
•  Inspect using the wave profile.
•  Generator
•  Related wiring harness
2AR
EGR valve #2 coil control
EGR valve
Ignition switch to the ON position
B+
•  EGR valve
•  Related wiring harness
Idle (after warm up)
B+
2AS
—
—
—
—
—
2AT
Constant voltage
MAP sensor
Ignition switch to the ON position
B+
•  Related wiring harness
2AU
EGR valve #1 coil control
EGR valve
Ignition switch to the ON position
Below 1.0
•  EGR valve
•  Related wiring harness
Idle (after warm up)
Below 1.0
2AV
EGR valve #4 coil control
EGR valve
Ignition switch to the ON position
Below 1.0
•  EGR valve
•  Related wiring harness
Idle (after warm up)
Below 1.0
2AW
—
—
—
—
—
2AX
Ground
MAP sensor
Under any condition
Below 1.0
•  Related wiring harness
2AY
EGR valve #3 coil control
EGR valve
Ignition switch to the ON position
B+
•  EGR valve
•  Related wiring harness
Idle (after warm up)
B+
2AZ
Fuel injection (#4)
Fuel injector No.4
•  Inspect using the wave profile.
•  Fuel injector No.4
•  Related wiring harness
2BA
Ground
ECT sensor
Under any condition
Below 1.0
•  Related wiring harness
2BB
Fuel injection (#1)
Fuel injector No.1
•  Inspect using the wave profile.
•  Fuel injector No.1
•  Related wiring harness
2BC
Fuel injection (#2)
Fuel injector No.2
•  Inspect using the wave profile.
•  Fuel injector No.2
•  Related wiring harness
2BD
Fuel injection (#3)
Fuel injector No.3
•  Inspect using the wave profile.
•  Fuel injector No.3
•  Related wiring harness
2BE
IGT1
Ignition coil (No.1 cylinders)
•  Inspect using the wave profile.
•  Ignition coil
•  Related wiring harness
2BF
IGT2
Ignition coil (No.2 cylinders)
•  Inspect using the wave profile.
•  Ignition coil
•  Related wiring harness
2BG
IGT3
Ignition coil (No.3 cylinders)
•  Inspect using the wave profile.
•  Ignition coil
•  Related wiring harness
2BH
IGT4
Ignition coil (No.4 cylinders)
•  Inspect using the wave profile.
•  Ignition coil
•  Related wiring harness

*1  :With immobilizer system
*2  :Without immobilizer system

Inspection Using An Oscilloscope (Reference)


Input/turbine speed sensor (+) signal

atraaw00002426
PCM terminals
•  1M (+)—body ground (–)
Oscilloscope setting
•  500 mV/DIV (Y), 1 ms/DIV (X), DC range
Vehicle condition
•  Idle after warm up


Input/turbine speed sensor (-) signal

atraaw00002427
PCM terminals
•  1Q (+)—body ground (–)
Oscilloscope setting
•  500 mV/DIV (Y), 1 ms/DIV (X), DC range
Vehicle condition
•  Idle after warm up


A/F sensor heater control

atraaw00002428
PCM terminals
•  2G (+)—body ground (–)
Oscilloscope setting
•  5 V/DIV (Y), 125 ms/DIV (X), DC range
Vehicle condition
•  Idle after warm up


CKP sensor signal

atraaw00002429
PCM terminals
•  2U (+)—body ground (–)
Oscilloscope setting
•  2 V/DIV (Y), 10 ms/DIV (X), DC range
Vehicle condition
•  Idle after warm up


CMP sensor signal

atraaw00002430
PCM terminals
•  2V(+)—body ground(–)
Oscilloscope setting
•  1 V/DIV (Y), 25 ms/DIV (X), DC range
Vehicle condition
•  Idle after warm up


OCV control signal

atraaw00002431
PCM terminals
•  2AF (+)—body ground(–)
Oscilloscope setting
•  2 V/DIV (Y), 1 ms/DIV (X), DC range
Vehicle condition
•  Idle after warm up


Generator output voltage signal

atraaw00002432
PCM terminals
•  2AM (+)—body ground (–)
Oscilloscope setting
•  2 V/DIV (Y), 2.5 ms/DIV (X), DC range
Vehicle condition
•  Idle after warm up


Generator field coil control signal

atraaw00002433
PCM terminals
•  2AQ (+)—body ground (–)
Oscilloscope setting
•  0.5 V/DIV (Y), 1 ms/DIV (X), DC range
Vehicle condition
•  Idle after warm up


Purge control signal

atraaw00002434
PCM terminals
•  2AN (+)—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)


IGT1, IGT2, IGT3, IGT4 control signals

atraaw00002435
PCM terminals
•  IGT1(ignition coil No.1): 2BE (+)—body ground (–)
•  IGT2(ignition coil No.2): 2BF (+)—body ground (–)
•  IGT3(ignition coil No.3): 2BG (+)—body ground (–)
•  IGT4(ignition coil No.4): 2BH (+)—body ground (–)
Oscilloscope setting
•  10 V/DIV (Y), 25 ms/DIV (X), DC range
Vehicle condition
•  Idle after warm up


Fuel injection control

atraaw00002436
PCM terminals
•  Fuel Injection No.1: 2BB(+)—body ground(–)
•  Fuel Injection No.2: 2BC(+)—body ground(–)
•  Fuel Injection No.3: 2BD(+)—body ground(–)
•  Fuel Injection No.4: 2AZ(+)—body ground(–)
Oscilloscope setting
•  10 V/DIV (Y), 25 ms/DIV (X), DC range
Vehicle condition
•  Idle after warm up