2008 INFINITI QX56 Factory Service Manual

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INFINITI QX56 2008  Factory Service Manual DIAGNOSIS SYSTEM (BCM)RF-9
< FUNCTION DIAGNOSIS >
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Monitor Item [Unit] Description
DOOR SW-DR [ON/OFF] Indicates condition of front door switch LH.
DOOR SW-AS [ON/OFF] I

Page 2994 of 4083

INFINITI QX56 2008  Factory Service Manual RF-10
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
COMPONENT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
SUNROOF MOTOR ASSEMBLY
SUNROOF MOTOR ASSEMBLY : Diagnosis ProcedureINFOID:000000000173

Page 2995 of 4083

INFINITI QX56 2008  Factory Service Manual POWER SUPPLY AND GROUND CIRCUITRF-11
< COMPONENT DIAGNOSIS >
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1. Connect BCM connector M20.
2. Turn ignition switch ON.
3. Check voltage between BCM connector M20 and gr

Page 2996 of 4083

INFINITI QX56 2008  Factory Service Manual RF-12
< COMPONENT DIAGNOSIS >
SUNROOF SWITCH CIRCUIT
SUNROOF SWITCH CIRCUIT
DescriptionINFOID:0000000001731930
The BCM supplies power to the integrated CPU of the sunroof motor assembly. The tilt and

Page 2997 of 4083

INFINITI QX56 2008  Factory Service Manual SUNROOF SWITCH CIRCUITRF-13
< COMPONENT DIAGNOSIS >
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Are the continuity test results as specified?
YES >> GO TO 3
NO >> Repair harness or connector.
3. CHECK SUNROOF SWI

Page 2998 of 4083

INFINITI QX56 2008  Factory Service Manual RF-14
< COMPONENT DIAGNOSIS >
DOOR SWITCH
DOOR SWITCH
DescriptionINFOID:0000000006081160
Detects door open/close condition and transmits the signal to BCM.
Component Function CheckINFOID:0000000006081

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INFINITI QX56 2008  Factory Service Manual DOOR SWITCHRF-15
< COMPONENT DIAGNOSIS >
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Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK BCM OUTPUT SIGNAL
1. Connect BCM conn

Page 3000 of 4083

INFINITI QX56 2008  Factory Service Manual RF-16
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
ECU DIAGNOSIS
BCM (BODY CONTROL MODULE)
Reference ValueINFOID:0000000004874885
VALUES ON THE DIAGNOSIS TOOL
Monitor ItemCondition Value/Status
AIR CON