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Diagnostic ProcedureNJAT0313
1 CHECK DTC WITH ECM
Perform diagnostic test mode II (self-diagnostic results) for engine control.
Refer to EC-74, ªMalfunction Indicator Lamp (MIL)º.
OK or NG
OK (With CONSULT-II)©GO TO 2.
OK (Without CONSULT-
II)©GO TO 3.
NG©Check throttle position sensor circuit for engine control. Refer to EC-207, ªDTC P0120
THROTTLE POSITION SENSORº.
2 CHECK INPUT SIGNAL (WITH CONSULT-II)
With CONSULT-II
1. Apply vacuum to the throttle opener then check the following. Refer from step 1 to 5 of ªPreparationº, ªTCM SELF-DI-
AGNOSTIC PROCEDURE (No Tools)º, AT-63.
2. Turn ignition switch to ªONº position.
(Do not start engine.)
3. Select ªECU INPUT SIGNALSº in ªDATA MONITORº mode for ªA/Tº with CONSULT-II.
SAT014K
4. Read out the value of ªTHRTL POS SENº.
Voltage:
Fully-closed throttle:
Approximately 0.5V
Fully-open throttle:
Approximately 4V
SAT614J
OK or NG
OK©GO TO 4.
NG©Check harness for short or open between ECM and TCM regarding throttle position sen-
sor circuit. (Main harness)
DTC P1705 THROTTLE POSITION SENSOREURO-OBD
Diagnostic Procedure
AT-263
Page 266 of 2898
3 CHECK INPUT SIGNAL (WITHOUT CONSULT-II)
Without CONSULT-II
1. Apply vacuum to the throttle opener then check the following. Refer to steps 1 to 5 of ªPreparationº, ªTCM SELF-DIAG-
NOSTIC PROCEDURE (No Tools)º, AT-63.
2. Turn ignition switch to ªONº position.
(Do not start engine.)
3. Check voltage between TCM terminals 41 and 42 while accelerator pedal is depressed slowly.
Voltage:
Fully-closed throttle valve:
Approximately 0.5V
Fully-open throttle valve:
Approximately 4V
(Voltage rises gradually in response to throttle position)
SAT453J
OK or NG
OK©GO TO 5.
NG©Check harness for short or open between ECM and TCM regarding throttle position sen-
sor circuit. (Main harness)
DTC P1705 THROTTLE POSITION SENSOREURO-OBD
Diagnostic Procedure (Cont'd)
AT-264
Page 267 of 2898
4 CHECK THROTTLE POSITION SWITCH CIRCUIT (WITH CONSULT-II)
With CONSULT-II
1. Apply vacuum to the throttle opener, then check the following. Refer to steps 1 to 5 of ªPreparationº, ªTCM SELF-DIAG-
NOSTIC PROCEDURE (No Tools)º, AT-63.
2. Turn ignition switch to ªONº position.
(Do not start engine.)
3. Select ªECU INPUT SIGNALSº in ªDATA MONITORº mode for ªA/Tº with CONSULT-II.
4. Read out ªCLOSED THL/SWº and ªW/O THRL/P-SWº depressing and releasing accelerator pedal.
Check the signal of throttle position switch is indicated properly.
MTBL0011
SAT702J
OK or NG
OK©GO TO 6.
NG©Check the following items:
+Throttle position switch Ð Refer to ªComponents Inspectionº, AT-267.
+Harness for short or open between ignition switch and throttle position switch (Main
harness)
+Harness for short or open between throttle position switch and TCM (Main harness)
DTC P1705 THROTTLE POSITION SENSOREURO-OBD
Diagnostic Procedure (Cont'd)
AT-265
Page 268 of 2898

5 CHECK THROTTLE POSITION SWITCH CIRCUIT (WITHOUT CONSULT-II)
Without CONSULT-II
1. Apply vacuum to the throttle opener, then check the following. Refer to steps 1 to 5 of ªPreparationº, ªTCM SELF-DIAG-
NOSTIC PROCEDURE (No Tools)º, AT-63.
2. Turn ignition switch to ªONº position.
(Do not start engine.)
3. Check voltage between TCM terminals 16, 17 and ground while depressing, and releasing accelerator pedal slowly.
(After warming up engine)
MTBL0137
SAT454JB
OK or NG
OK©GO TO 6.
NG©Check the following items:
+Throttle position switch Ð Refer to ªComponents Inspectionº, AT-267.
+Harness for short or open between ignition switch and throttle position switch (Main
harness)
+Harness for short or open between throttle position switch and TCM (Main harness)
6 CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure, AT-259.
OK or NG
OK©INSPECTION END
NG©1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness con-
nector.
DTC P1705 THROTTLE POSITION SENSOREURO-OBD
Diagnostic Procedure (Cont'd)
AT-266
Page 269 of 2898
SAT851JA
Component Inspection=NJAT0314THROTTLE POSITION SWITCHNJAT0314S01Closed Throttle Position Switch (Idle position)NJAT0314S0101+Check continuity between terminals 4 and 5.
[Refer to ªPreparationº, ªTCM SELF-DIAGNOSTIC PROCE-
DURE (No Tools)º, AT-63.]
Accelerator pedal condition Continuity
Released Yes
Depressed No
+To adjust closed throttle position switch, refer to EC-385, ªDTC
P0510 CLOSED THROTTLE POSITION SWITCHº.
SAT852JA
Wide Open Throttle Position SwitchNJAT0314S0102+Check continuity between terminals 5 and 6.
Accelerator pedal condition Continuity
Released No
Depressed Yes
DTC P1705 THROTTLE POSITION SENSOREURO-OBD
Component Inspection
AT-267
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SAT322GC
DescriptionNJAT0315The overrun clutch solenoid valve is activated by the TCM in
response to signals sent from the inhibitor switch, overdrive con-
trol switch, vehicle speed and throttle position sensors. The over-
run clutch operation will then be controlled.
TCM TERMINALS AND REFERENCE VALUENJAT0315S01Remarks: Specification data are reference values.
Terminal
No.Wire color Item ConditionJudgement stan-
dard
20 L/BOverrun clutch
solenoid valve
When overrun clutch solenoid valve
operates.Battery voltage
When overrun clutch solenoid valve
does not operate.1V or less
ON BOARD DIAGNOSIS LOGICNJAT0315S02
Diagnostic trouble code Malfunction is detected when ... Check items (Possible cause)
: O/R CLTCH SOL/CIRC TCM detects an improper voltage drop
when it tries to operate the solenoid
valve.+Harness or connectors
(The solenoid circuit is open or shorted.)
+Overrun clutch solenoid valve
: P1760
SAT014K
SAT020K
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
NJAT0315S03CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If ªDIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DUREº has been previously conducted, always turn ignition
switch ªOFFº and wait at least 5 seconds before conducting
the next test.
TESTING CONDITION:
Always drive vehicle on a level road to improve accuracy of
test.
After the repair, perform the following procedure to confirm the
malfunction is eliminated.
With CONSULT-II
1) Turn ignition switch ªONº and select ªDATA MONITORº mode
for ªENGINEº with CONSULT-II.
2) Start engine.
3) Accelerate vehicle to a speed of more than 10 km/h (6 MPH)
with ªDº position (OD ªONº).
4) Release accelerator pedal completely with ªDº position (OD
ªOFFº).
DTC P1760 OVERRUN CLUTCH SOLENOID VALVEEURO-OBD
Description
AT-268
Page 271 of 2898
With GST
Follow the procedure ªWith CONSULT-IIº.
DTC P1760 OVERRUN CLUTCH SOLENOID VALVEEURO-OBD
Description (Cont'd)
AT-269
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Wiring Diagram Ð AT Ð OVRCSVNJAT0316
HAT081
DTC P1760 OVERRUN CLUTCH SOLENOID VALVEEURO-OBD
Wiring Diagram Ð AT Ð OVRCSV
AT-270