diagram INFINITI QX4 2001 Factory Owner's Guide

Diagnostic ProcedureNBAT0069
1 CHECK VALVE RESISTANCE
1. Turn ignition switch to ªOFFº position.
2. Disconnect terminal cord assembly connector on the right side of transfer assembly.
3. Check resistance between terminal 4 and ground.
SAT170J
Is resistance approx. 20 - 40W?
Ye s©GO TO 3.
No©GO TO 2.
2 CHECK VALVE OPERATION
1. Remove control valve assembly.
Refer to AT-273.
2. Check the following items:
IOverrun clutch solenoid valve
Refer to ªComponent Inspectionº, AT-189.
IHarness of terminal cord assembly for short or open
OK or NG
OK©GO TO 3.
NG©Repair or replace damaged parts.
3 CHECK POWER SOURCE CIRCUIT
1. Turn ignition switch to ªOFFº position.
2. Disconnect TCM harness connector.
3. Check resistance between terminal 4 and TCM harness connector terminal 20. Refer to wiring diagram Ð AT Ð
OVRCSV.
Continuity should exist.
If OK, check harness for short to ground and short to power.
4. Reinstall any part removed.
OK or NG
OK©GO TO 4.
NG©Repair open circuit or short to ground or short to power in harness or connectors.
4 CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure, AT-185.
OK or NG
OK©INSPECTION END
NG©GO TO 5.
DTC P1760 OVERRUN CLUTCH SOLENOID VALVE
Diagnostic Procedure
AT-188

Wiring Diagram Ð AT Ð BA/FTSNBAT0201
MAT916A
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
Wiring Diagram Ð AT Ð BA/FTS
AT-192

Diagnostic ProcedureNBAT0173
1 INSPECTION START
Do you have CONSULT-II?
YesorNo
Ye s©GO TO 2.
No©GO TO 6.
2 CHECK INPUT SIGNAL OF A/T FLUID TEMPERATURE SENSOR (WITH CONSULT-II)
With CONSULT-II
1. Start engine.
2. Select ªTCM INPUT SIGNALSº in ªDATA MONITORº mode for ªA/Tº with CONSULT-II.
3. Read out the value of ªFLUID TEMP SEº.
Voltage:
Cold [20ÉC (68ÉF)]®Hot [80ÉC (176ÉF)]:
Approximately 1.5V®0.5V
SAT614J
OK or NG
OK©GO TO 4.
NG©GO TO 3.
3 DETECT MALFUNCTIONING ITEM
Check the following items:
IHarness for short to ground or short to power or open between TCM, ECM and terminal cord assembly (Main harness)
IGround circuit for ECM.
Refer to EC-174, ªWiring Diagramº.
OK or NG
OK©GO TO 4.
NG©Repair or replace damaged parts.
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
Diagnostic Procedure
AT-193

10 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©GO TO 11.
NG©Repair open circuit or short to ground or short to power in harness or connectors.
11 CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure, AT-106.
OK or NG
OK©INSPECTION END
NG©GO TO 12.
12 CHECK TCM INSPECTION
1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK©INSPECTION END
NG©Repair or replace damaged parts.
SAT687I
Component InspectionNBAT0174A/T FLUID TEMPERATURE SENSORNBAT0174S01IFor removal, refer to AT-273.
ICheck resistance between terminals 8 and 9 while changing
temperature as shown at left.
Temperature ÉC (ÉF) Resistance
20 (68) Approximately 2.5 kW
80 (176) Approximately 0.3 kW
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM
POWER SOURCE)
Diagnostic Procedure (Cont'd)
AT-196

Wiring Diagram Ð AT Ð VSSMTRNBAT0202
MAT917A
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC VEHICLE SPEED SENSOR´MTR
Wiring Diagram Ð AT Ð VSSMTR
AT-199

Wiring Diagram Ð AT Ð TRSA/TNBAT0225
MAT923A
DTC TURBINE REVOLUTION SENSOR
Wiring Diagram Ð AT Ð TRSA/T
AT-204

Wiring Diagram Ð AT Ð LANNBAT0229
MAT922A
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC A/T COMMUNICATION LINE
Wiring Diagram Ð AT Ð LAN
AT-209

Wiring Diagram Ð AT Ð NONDTCNBAT0203
MAT059B
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SYMPTOMS
Wiring Diagram Ð AT Ð NONDTC
AT-215

MAT919A
TROUBLE DIAGNOSES FOR SYMPTOMS
Wiring Diagram Ð AT Ð NONDTC (Cont'd)
AT-216

MAT920A
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SYMPTOMS
Wiring Diagram Ð AT Ð NONDTC (Cont'd)
AT-217