2008 INFINITI QX56 Factory Service Manual

Page 1129 of 4083

INFINITI QX56 2008  Factory Service Manual TRANSFER CONTROL UNITDLN-99
< ECU DIAGNOSIS > [ATX14B]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
CAUTION:
• If CAN communication is displayed wi th other DTCs, first perform the trouble diagnosis for CAN com

Page 1130 of 4083

INFINITI QX56 2008  Factory Service Manual DLN-100
< SYMPTOM DIAGNOSIS >[ATX14B]
4WD SYSTEM SYMPTOMS
SYMPTOM DIAGNOSIS
4WD SYSTEM SYMPTOMS
Symptom TableINFOID:0000000001737182
If 4WD warning lamp turns ON, perform self-diagnosis. Refer to DLN-

Page 1131 of 4083

INFINITI QX56 2008  Factory Service Manual 4WD SHIFT INDICATOR LAMP AND 4LO INDICATOR LAMP DO NOT TURN ON
DLN-101
< SYMPTOM DIAGNOSIS > [ATX14B]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
4WD SHIFT INDICATOR LAMP AND  4LO INDICATOR LAMP DO NOT
TURN ON
D

Page 1132 of 4083

INFINITI QX56 2008  Factory Service Manual DLN-102
< SYMPTOM DIAGNOSIS >[ATX14B]
4WD SHIFT INDICATOR LAMP AND 4LO 
INDICATOR LAMP DO NOT TURN ON
5.SYMPTOM CHECK
Check again.
Are the inspection results normal?
YES >> Inspection End.
NO >> GO TO

Page 1133 of 4083

INFINITI QX56 2008  Factory Service Manual 4WD WARNING LAMP DOES NOT TURN ONDLN-103
< SYMPTOM DIAGNOSIS > [ATX14B]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
4WD WARNING LAMP DOES NOT TURN ON
DescriptionINFOID:0000000001737185
4WD warning lamp does not

Page 1134 of 4083

INFINITI QX56 2008  Factory Service Manual DLN-104
< SYMPTOM DIAGNOSIS >[ATX14B]
4WD WARNING LAMP DOES NOT TURN ON
Are the inspection results normal?
YES >> Inspection End.
NO >> Check transfer control unit pin terminals fo
r damage or loose c

Page 1135 of 4083

INFINITI QX56 2008  Factory Service Manual 4WD SHIFT INDICATOR LAMP OR 4LO INDICATOR LAMP DO NOT CHANGE
DLN-105
< SYMPTOM DIAGNOSIS > [ATX14B]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
4WD SHIFT INDICATOR LAMP OR  4LO INDICATOR LAMP DO NOT
CHANGE
Descr

Page 1136 of 4083

INFINITI QX56 2008  Factory Service Manual DLN-106
< SYMPTOM DIAGNOSIS >[ATX14B]
4WD SHIFT INDICATOR LAMP OR 4L
O INDICATOR LAMP DO NOT CHANGE
9.CHECK SYSTEM FOR ACTUATOR POSITION SWITCH
Perform trouble diagnosis for actuator  position switch