2008 INFINITI QX56 Factory Service Manual

Page 857 of 4083

INFINITI QX56 2008  Factory Service Manual DLK-64
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
INTELLIGENT KEY UNIT
INTELLIGENT KEY UNIT
 : Diagnosis ProcedureINFOID:00000

Page 858 of 4083

INFINITI QX56 2008  Factory Service Manual POWER SUPPLY AND GROUND CIRCUITDLK-65
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between B

Page 859 of 4083

INFINITI QX56 2008  Factory Service Manual DLK-66
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
POWER SUPPLY AND GROUND CIRCUIT
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair the back door control unit power supply circuit

Page 860 of 4083

INFINITI QX56 2008  Factory Service Manual DOOR SWITCHDLK-67
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
DOOR SWITCH
DescriptionINFOID:0000000001538961
Detects door open/close condition.
Component Fu

Page 861 of 4083

INFINITI QX56 2008  Factory Service Manual DLK-68
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DOOR SWITCH
Is the inspection result normal?
YES >> Door switch circuit is OK.
NO >> GO TO 2
2.CHECK DOOR SWITCH CIRCUIT
1. Turn ignition sw

Page 862 of 4083

INFINITI QX56 2008  Factory Service Manual DOOR SWITCHDLK-69
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
Is the inspection result normal?
YES >> Door switch circuit is OK.
NO >> (Front and rear doors

Page 863 of 4083

INFINITI QX56 2008  Factory Service Manual DLK-70
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DOOR LOCK AND UNLOCK SWITCH
DOOR LOCK AND 
UNLOCK SWITCH
DRIVER SIDE
DRIVER SIDE : DescriptionINFOID:0000000001538964
Transmits door lock/un

Page 864 of 4083

INFINITI QX56 2008  Factory Service Manual DOOR LOCK AND UNLOCK SWITCHDLK-71
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
NO >> GO TO 2
2.CHECK BCM OUTPUT SIGNAL
1. Turn ignition switch OFF.
2. Using