2001 INFINITI QX4 Factory Service Manual

Page 201 of 2395

INFINITI QX4 2001  Factory Service Manual 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

Page 202 of 2395

INFINITI QX4 2001  Factory Service Manual DescriptionNBAT0071The vehicle speed sensor´MTR is built into the speedometer
assembly. The sensor functions as an auxiliary device to the revo-
lution sensor when it is malfunctioning. The TCM will

Page 203 of 2395

INFINITI QX4 2001  Factory Service Manual SAT668I
No Tools
1) Start engine.
2) Drive vehicle under the following conditions:
Selector lever in ªDº position and vehicle speed higher than 25
km/h (16 MPH).
3) Perform self-diagnosis.
Refer to

Page 204 of 2395

INFINITI QX4 2001  Factory Service Manual 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

Page 205 of 2395

INFINITI QX4 2001  Factory Service Manual Diagnostic ProcedureNBAT0072
1 CHECK INPUT SIGNAL.
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 ªVHC

Page 206 of 2395

INFINITI QX4 2001  Factory Service Manual 4 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

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INFINITI QX4 2001  Factory Service Manual SAT136K
DescriptionNBAT0224The turbine revolution sensor detects input shaft rpm (revolutions
per minute). It is located on the input side of the automatic trans-
mission. The vehicle speed sensor A/T

Page 208 of 2395

INFINITI QX4 2001  Factory Service Manual SAT014K
SAT971J
SAT635I
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
NBAT0224S03CAUTION:
IAlways drive vehicle at a safe speed.
IIf conducting this ªDTC CONFIRMATION PROCEDUREº
again, always