2009 INFINITI QX56 ignition

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Page 778 of 4171

INFINITI QX56 2009  Factory Service Manual DEF-10
< COMPONENT DIAGNOSIS >
REAR WINDOW DEFOGGER RELAY
REAR WINDOW DEFOGGER RELAY
DescriptionINFOID:0000000003776339
Power is supplied to the rear window defogger with BCM control.
Component Functi

Page 779 of 4171

INFINITI QX56 2009  Factory Service Manual REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT
DEF-11
< COMPONENT DIAGNOSIS >
C
D E
F
G H
I
J
K
M A
B
DEF
N
O P
REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT
DescriptionINFOID:00000000037

Page 781 of 4171

INFINITI QX56 2009  Factory Service Manual DOOR MIRROR DEFOGGER LHDEF-13
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
DEF
N
O P
DOOR MIRROR DEFOGGER LH
DescriptionINFOID:0000000003776346
Heats the heating wire with the power supply from t he

Page 782 of 4171

INFINITI QX56 2009  Factory Service Manual DEF-14
< COMPONENT DIAGNOSIS >
DOOR MIRROR DEFOGGER LH
NO >> Repair or replace harness.
4. CHECK DOOR MIRROR DEFOGGER CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R and door mirror LH.
3.

Page 783 of 4171

INFINITI QX56 2009  Factory Service Manual DOOR MIRROR DEFOGGER RHDEF-15
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
DEF
N
O P
DOOR MIRROR DEFOGGER RH
DescriptionINFOID:0000000003776350
Heats the heating wire with the power supply from t he

Page 784 of 4171

INFINITI QX56 2009  Factory Service Manual DEF-16
< COMPONENT DIAGNOSIS >
DOOR MIRROR DEFOGGER RH
NO >> Repair or replace harness.
4. CHECK DOOR MIRROR DEFOGGER CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R and door mirror RH.
3.

Page 786 of 4171

INFINITI QX56 2009  Factory Service Manual DEF-18
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
HEADLAMP SW1Headlamp switch OFF OFF
Headlamp switch 1st
ON
HEADLAMP SW2 Headlamp switch OFF
OFF
Headlamp switch 1st ON
HI BEAM SW High beam switch OF

Page 788 of 4171

INFINITI QX56 2009  Factory Service Manual DEF-20
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
Te r m i n a lWire 
color Signal name Signal 
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition 
switch Operation or c