2008 INFINITI QX56 Factory Service Manual

Page 1961 of 4083

INFINITI QX56 2008  Factory Service Manual FRONT FOG LAMP CIRCUITEXL-33
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
EXL
N
O P
1. Turn the ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between the IPDM E/R harnes

Page 1962 of 4083

INFINITI QX56 2008  Factory Service Manual EXL-34
< COMPONENT DIAGNOSIS >
PARKING LAMP CIRCUIT
PARKING LAMP CIRCUIT
DescriptionINFOID:0000000001547134
The IPDM E/R (intelligent power distribution module engine room) controls the tail lamp rela

Page 1963 of 4083

INFINITI QX56 2008  Factory Service Manual PARKING LAMP CIRCUITEXL-35
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
EXL
N
O P
6. With the parking lamps ON, check voltage between the rear combination lamp connectors and ground.
7. With the par

Page 1964 of 4083

INFINITI QX56 2008  Factory Service Manual EXL-36
< COMPONENT DIAGNOSIS >
PARKING LAMP CIRCUIT
5. Check continuity between the IPDM E/R harness connector (A)and license plate lamp connector (B). 
Are continuity test results as specified?
YES >

Page 1965 of 4083

INFINITI QX56 2008  Factory Service Manual TURN SIGNAL LAMP CIRCUITEXL-37
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
EXL
N
O P
TURN SIGNAL LAMP CIRCUIT
DescriptionINFOID:0000000001547137
The BCM monitors inputs from the combination switch

Page 1966 of 4083

INFINITI QX56 2008  Factory Service Manual EXL-38
< COMPONENT DIAGNOSIS >
TURN SIGNAL LAMP CIRCUIT
3.CHECK TURN SIGNAL LAMP CIRCUIT FOR OPEN 
1. Turn the ignition switch OFF.
2. Disconnect BCM connector M20.
3. Check continuity between the BCM

Page 1967 of 4083

INFINITI QX56 2008  Factory Service Manual TURN SIGNAL LAMP CIRCUITEXL-39
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
EXL
N
O P
1. Check continuity between the front turn/fog lamp harness con- nectors and ground.
2. Check continuity between

Page 1968 of 4083

INFINITI QX56 2008  Factory Service Manual EXL-40
< COMPONENT DIAGNOSIS >
OPTICAL SENSOR
OPTICAL SENSOR
DescriptionINFOID:0000000001547140
The optical sensor converts the outside brightness (lux) to voltage and transmits the optical sensor sig