2009 INFINITI QX56 Factory Service Manual

Page 1985 of 4171

INFINITI QX56 2009  Factory Service Manual HEADLAMP (LO) CIRCUITEXL-37
< COMPONENT DIAGNOSIS >
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B
EXL
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Is voltage reading as specified?
YES >> GO TO 4.
NO >> GO TO 3.
3.CHECK HEADLAMP (LO) CIRCUIT FOR OPEN
1. Turn the

Page 1986 of 4171

INFINITI QX56 2009  Factory Service Manual EXL-38
< COMPONENT DIAGNOSIS >
FRONT FOG LAMP CIRCUIT
FRONT FOG LAMP CIRCUIT
DescriptionINFOID:0000000003776184
The IPDM E/R (intelligent power distribution module engine room) controls the front fog

Page 1987 of 4171

INFINITI QX56 2009  Factory Service Manual FRONT FOG LAMP CIRCUITEXL-39
< COMPONENT DIAGNOSIS >
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M A
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1. Turn the ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between the IPDM E/R harnes

Page 1988 of 4171

INFINITI QX56 2009  Factory Service Manual EXL-40
< COMPONENT DIAGNOSIS >
PARKING LAMP CIRCUIT
PARKING LAMP CIRCUIT
DescriptionINFOID:0000000003776187
The IPDM E/R (intelligent power distribution module engine room) controls the tail lamp rela

Page 1989 of 4171

INFINITI QX56 2009  Factory Service Manual PARKING LAMP CIRCUITEXL-41
< COMPONENT DIAGNOSIS >
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EXL
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6. With the parking lamps ON, check voltage between the rear combination lamp connectors and ground.
7. With the par

Page 1990 of 4171

INFINITI QX56 2009  Factory Service Manual EXL-42
< 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 1991 of 4171

INFINITI QX56 2009  Factory Service Manual PARKING LAMP CIRCUITEXL-43
< COMPONENT DIAGNOSIS >
C
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F
G H
I
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M A
B
EXL
N
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YES >> Repair the harness and replace the fuse.
NO >> GO TO 2.
2.CHECK TAIL LAMP RELAY OUTPUT (VOLTAGE)
1. Turn the

Page 1992 of 4171

INFINITI QX56 2009  Factory Service Manual EXL-44
< COMPONENT DIAGNOSIS >
PARKING LAMP CIRCUIT
4. Check continuity between the IPDM E/R harness connector (A)and the rear combination lamp harness connector (B).
5. Check continuity between the I