2004 INFINITI QX56 Factory Service Manual

Page 3209 of 3371

INFINITI QX56 2004  Factory Service Manual TF-84
SHIFT ACTUATOR CIRCUIT
Revision: August 20072004 QX56
6. CHECK INPUT SIGNAL
 Without CONSULT-II
1. Start engine (idling).
2. Check voltage between transfer control unit harness connector
E142 te

Page 3210 of 3371

INFINITI QX56 2004  Factory Service Manual TROUBLE DIAGNOSES FOR SYMPTOMS
TF-85
C
E
F
G
H
I
J
K
L
MA
B
TF
Revision: August 20072004 QX56
TROUBLE DIAGNOSES FOR SYMPTOMSPFP:00007
Symptom 1. 4WD Shift Indicator Lamp Does Not Turn ON (Although the

Page 3211 of 3371

INFINITI QX56 2004  Factory Service Manual TF-86
TROUBLE DIAGNOSES FOR SYMPTOMS
Revision: August 20072004 QX56
2. CHECK TRANSFER CONTROL UNIT GROUND CIRCUIT
1. Turn ignition switch to OFF position.
2. Disconnect transfer control unit harness c

Page 3212 of 3371

INFINITI QX56 2004  Factory Service Manual TROUBLE DIAGNOSES FOR SYMPTOMS
TF-87
C
E
F
G
H
I
J
K
L
MA
B
TF
Revision: August 20072004 QX56
Symptom 2. 4WD Warning Lamp Does Not Turn ON (Although the ignition 
switch is turned ON, the 4WD warning

Page 3213 of 3371

INFINITI QX56 2004  Factory Service Manual TF-88
TROUBLE DIAGNOSES FOR SYMPTOMS
Revision: August 20072004 QX56
Symptom 3. 4WD Shift Indicator Lamp Does Not Turn OFF (When 4WD shift 
switch is set from 4H to 4LO, all the 4WD shift indicator lam

Page 3214 of 3371

INFINITI QX56 2004  Factory Service Manual TROUBLE DIAGNOSES FOR SYMPTOMS
TF-89
C
E
F
G
H
I
J
K
L
MA
B
TF
Revision: August 20072004 QX56
Symptom 4. ATP Warning Lamp Does Not Turn ON (When 4WD shift switch is 
set from 4H to 4LO with the A/T se

Page 3215 of 3371

INFINITI QX56 2004  Factory Service Manual TF-90
TROUBLE DIAGNOSES FOR SYMPTOMS
Revision: August 20072004 QX56
Symptom 5. 4LO Indicator Lamp Does Not Turn ON (When 4WD shift switch is 
set from 4H to 4LO position, 4LO indicator lamp does not t

Page 3216 of 3371

INFINITI QX56 2004  Factory Service Manual TROUBLE DIAGNOSES FOR SYMPTOMS
TF-91
C
E
F
G
H
I
J
K
L
MA
B
TF
Revision: August 20072004 QX56
3. CHECK 4LO INDICATOR LAMP CIRCUIT AND COMBINATION METER
Check the following.
Combination meter.  Refer