Page 123 of 2898

Terminal
No.Wire color Item ConditionJudgement stan-
dard
28 R/BPower source
(Memory back-up)
or
When turning ignition switch to
ªOFFº.Battery voltage
When turning ignition switch to
ªONº.Battery voltage
29 W Revolution sensor
When moving at 20 km/h (12 MPH),
use the CONSULT-II pulse fre-
quency measuring function.*1
CAUTION:
Connect the diagnosis data link
cable to the vehicle diagnosis
connector.
*1: A circuit tester cannot be used
to test this item.Approximately
150 Hz
When vehicle parks.Under 1.3V or
over 4.5V
30 *3 G/B Ð
ÐÐ
31 *3 GY/L Ð Ð Ð
32 RThrottle position
sensor
(Power source)Ð 4.5 - 5.5V
34 W/GPNP switch ªDº
positionWhen setting selector lever to ªDº
position.Battery voltage
When setting selector lever to other
positions.1V or less
35 G/WPNP switch ªRº
positionWhen setting selector lever to ªRº
position.Battery voltage
When setting selector lever to other
positions.1V or less
36 GPNP switch ªNº or
ªPº positionWhen setting selector lever to ªNº or
ªPº position.Battery voltage
When setting selector lever to other
positions.1V or less
39 L/OREngine speed
signal
+Refer to EC-43, ªIdle Speed and
Ignition Timingº. Ð General and
except for Euro-OBD
+Refer to EC-43, ªIdle Speed and
Ignition Timingº. Ð EURO-OBDÐ
40 PU/RVehicle speed
sensor
When moving vehicle at 2 to 3 km/h
(1 to 2 MPH) for1m(3ft)ormore.Voltage varies
between less
than 1V and more
than 4.5V
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTION
TCM Terminals and Reference Value (Cont'd)
AT-121
Page 126 of 2898
TCM TERMINALS AND REFERENCE VALUENJAT0031S01Remarks: Specification data are reference values.
Terminal
No.Wire color Item ConditionJudgement stan-
dard
10 BR/R Power source
When turning ignition switch to
ªONº.Battery voltage
When turning ignition switch to
ªOFFº.1V or less
19 BR/R Power source Same as No. 10
25 B Ground Ð Ð
28 R/BPower source
(Memory back-up)
or
When turning ignition switch to
ªOFFº.Battery voltage
When turning ignition switch to
ªONº.Battery voltage
48 B Ground
ÐÐ
Diagnostic ProcedureNJAT0231
1 CHECK TCM POWER SOURCE STEP 1
1. Turn ignition switch to ON position.
(Do not start engine.)
2. Check voltage between TCM terminals 10, 19, 28 and ground.
SAT611J
OK or NG
OK©GO TO 2.
NG©GO TO 3.
TROUBLE DIAGNOSIS FOR POWER SUPPLY
Wiring Diagram Ð AT Ð MAIN (Cont'd)
AT-124
Page 127 of 2898
2 CHECK TCM POWER SOURCE STEP 2
1. Turn ignition switch to OFF position.
2. Check voltage between TCM terminal 28 and ground.
SAT612JA
OK or NG
OK©GO TO 4.
NG©GO TO 3.
3 DETECT MALFUNCTIONING ITEM
Check the following items:
+Harness for short or open between ignition switch and TCM terminals 10, 19 and 28 (Main harness)
+Fuse
+Ignition switch
Refer to EL-10, ªPOWER SUPPLY ROUTINGº.
OK or NG
OK©GO TO 4.
NG©Repair or replace damaged parts.
4 CHECK TCM GROUND CIRCUIT
1. Turn ignition switch to OFF position.
2. Disconnect TCM harness connector.
3. Check continuity between TCM terminals 25, 48 and ground. Refer to wiring diagram Ð AT Ð MAIN.
Continuity should exist.
If OK, check harness for short to ground and short to power.
OK or NG
OK©INSPECTION END
NG©Repair open circuit or short to ground or short to power in harness or connectors.
TROUBLE DIAGNOSIS FOR POWER SUPPLY
Diagnostic Procedure (Cont'd)
AT-125
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Diagnostic ProcedureNJAT0071
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, ªSELF-DIAG-
NOSTIC PROCEDURE (Without CONSULT-II)º, AT-44.
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.
SAT580J
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)
THROTTLE POSITION
SENSOR
EXCEPT FOR EURO-OBD
Diagnostic Procedure
AT-137
Page 140 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, ªSELF-DIAGNOS-
TIC PROCEDURE (Without CONSULT-II)º, AT-44.
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)
THROTTLE POSITION
SENSOR
EXCEPT FOR EURO-OBD
Diagnostic Procedure (Cont'd)
AT-138
Page 141 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, ªSELF-DIAGNOS-
TIC PROCEDURE (Without CONSULT-II)º, AT-44.
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-141.
+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)
THROTTLE POSITION
SENSOR
EXCEPT FOR EURO-OBD
Diagnostic Procedure (Cont'd)
AT-139
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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, ªSELF-DIAGNOS-
TIC PROCEDURE (Without CONSULT-II)º, AT-44.
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
SAT454JA
OK or NG
OK©GO TO 6.
NG©Check the following items:
+Throttle position switch Ð Refer to ªComponents Inspectionº, AT-141.
+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 Self-diagnosis Code confirmation procedure, AT-135.
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.
THROTTLE POSITION
SENSOR
EXCEPT FOR EURO-OBD
Diagnostic Procedure (Cont'd)
AT-140
Page 147 of 2898
Diagnostic ProcedureNJAT0065
1 CHECK VALVE RESISTANCE
1. Turn ignition switch to ªOFFº position.
2. Disconnect terminal cord assembly connector in engine compartment.
3. Check resistance between terminal 2 and ground.
Resistance:
20-30W
SAT900JA
OK or NG
OK©GO TO 2.
NG©1. Remove control valve assembly. Refer to AT-351.
2. Check the following items:
+Shift solenoid valve A
Refer to ªComponent Inspectionº, AT-147.
+Harness of terminal cord assembly for short or open
SHIFT SOLENOID VALVE AEXCEPT FOR EURO-OBD
Diagnostic Procedure
AT-145