2001 INFINITI QX4 Factory Service Manual

Page 209 of 2395

INFINITI QX4 2001  Factory Service Manual Wiring Diagram Ð AT Ð TRSA/TNBAT0225
MAT923A
DTC TURBINE REVOLUTION SENSOR
Wiring Diagram Ð AT Ð TRSA/T
AT-204

Page 210 of 2395

INFINITI QX4 2001  Factory Service Manual Diagnostic ProcedureNBAT0226
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 ªTURB

Page 211 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 terminal for damage or loose connection with harness connector.
OK or NG
OK©INSPECTION END
NG©Repair o

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INFINITI QX4 2001  Factory Service Manual DescriptionNBAT0228The ECM and TCM provide mutual communication in relation to
engine output control signal (ignition timing retard signal) during
rapid standing starts/acceleration. With this consist

Page 213 of 2395

INFINITI QX4 2001  Factory Service Manual SAT014K
SAT971J
SAT682I
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
NBAT0228S03After the repair, perform the following procedure to confirm the
malfunction is eliminated.
With CONSULT-II
1) T

Page 214 of 2395

INFINITI QX4 2001  Factory Service Manual 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

Page 215 of 2395

INFINITI QX4 2001  Factory Service Manual Diagnostic ProcedureNBAT0230
1 CHECK CIRCUIT BETWEEN TCM AND ECM
1. Turn ignition switch to OFF position.
2. Check continuity between TCM terminal 33 and ECM terminal 114.
SAT640JA
OK or NG
OK©GO TO

Page 216 of 2395

INFINITI QX4 2001  Factory Service Manual SAT574J
DescriptionNBAT0207The TCM consists of a microcomputer and connectors for signal
input and output and for power supply. The unit controls the A/T.
ON BOARD DIAGNOSIS LOGICNBAT0207S01
Diagnosti