2008 INFINITI QX56 Factory Service Manual

Page 2401 of 4083

INFINITI QX56 2008  Factory Service Manual INL-18
< COMPONENT DIAGNOSIS >
INTERIOR ROOM LAMP CONTROL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector M20, door mirror connectors andfront room/map lamp assembly connector.
3. Che

Page 2402 of 4083

INFINITI QX56 2008  Factory Service Manual STEP LAMP CIRCUITINL-19
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
INL
N
O P
STEP LAMP CIRCUIT
DescriptionINFOID:0000000001601393
Controls the front and rear step lamps and the foot  lamps (ground

Page 2403 of 4083

INFINITI QX56 2008  Factory Service Manual INL-20
< COMPONENT DIAGNOSIS >
STEP LAMP CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector M20, front step lamp, rear step lampand foot lamp connectors.
3. Check continuity between BCM

Page 2404 of 4083

INFINITI QX56 2008  Factory Service Manual CARGO LAMP CONTROL CIRCUITINL-21
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
INL
N
O P
CARGO LAMP CONTROL CIRCUIT
DescriptionINFOID:0000000001601396
Controls the cargo lamp (ground side) to turn th

Page 2405 of 4083

INFINITI QX56 2008  Factory Service Manual INL-22
< COMPONENT DIAGNOSIS >
CARGO LAMP CONTROL CIRCUIT
YES >> Check cargo lamp for an open. If OK, replace BCM. Refer to BCS-55, "Removal and Installation".
If NG, replace cargo lamp. Refer to  INL

Page 2406 of 4083

INFINITI QX56 2008  Factory Service Manual IGNITION KEYHOLE ILLUMINATION CONTROL CIRCUIT
INL-23
< COMPONENT DIAGNOSIS >
C
D E
F
G H
I
J
K
M A
B
INL
N
O P
IGNITION KEYHOLE ILLUMI NATION CONTROL CIRCUIT
DescriptionINFOID:0000000001601399
Control

Page 2407 of 4083

INFINITI QX56 2008  Factory Service Manual INL-24
< COMPONENT DIAGNOSIS >
IGNITION KEYHOLE ILLUMINATION CONTROL CIRCUIT
YES >> Check ignition keyhole illumination for an open. If OK, replace BCM. Refer to BCS-55, "Removal
and Installation". If

Page 2408 of 4083

INFINITI QX56 2008  Factory Service Manual INTERIOR ROOM LAMP CONTROL SYSTEMINL-25
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
INL
N
O P
INTERIOR ROOM LAMP CONTROL SYSTEM
Wiring DiagramINFOID:0000000001601402
AALWA0091GB
Revision: March 201