2009 INFINITI QX56 remote control

odometer checking oil cruise control fuses tow bar boot

Page 3417 of 4171

INFINITI QX56 2009 Factory Service Manual PRE-INSPECTION FOR DIAGNOSTICSEC-107
< ON-VEHICLE MAINTENANCE > [WITH INTELLIGENT KEY SYSTEM]
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ON-VEHICLE MAINTENANCE
PRE-INSPECTION FOR DIAGNOSTIC
Basic InspectionINF

PRE-INSPECTION FOR DIAGNOSTICSEC-107
< ON-VEHICLE MAINTENANCE > [WITH INTELLIGENT KEY SYSTEM]
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ON-VEHICLE MAINTENANCE
PRE-INSPECTION FOR DIAGNOSTIC
Basic InspectionINFOID:0000000003775947
The engine start function, door lock function, power distribution system and NATS-IVIS/NMS in the Intelligent
Key system are closely related to each other regarding control. Narrow down the functional area in question
by performing basic inspection to i dentify which function is malfunctioning. The vehicle security function can
operate only when the door lock and power distribution system are operating normally. Therefore, it is easy to
identify any factor unique to the vehicle security system by performing the vehicle security operation check
after basic inspection.
1.CHECK DOOR LOCK OPERATION
Check the door lock for normal operation with the Intelligent Key controller and door request switch.
Successful door lock operation with the Intelligent Key and request SW indicates that the remote keyless entry
receiver and inside key antenna required for engine start are functioning normally.
Identify the malfunctioning point by referring to the DLK section if the door cannot be unlocked.
Can the door be locked with the Intelligent Key and door request switch?
YES >> GO TO 2.
NO >> Refer to DLK-206, "
Symptom Table".
2.CHECK ENGINE STARTING
Checks that the engine starts when operating the Intelligent Key.
Does the engine start?
YES >> GO TO 3.
NO >> Refer to SEC-104, "
Symptom Table".
3.CHECK STEERING LOCKING
Does the steering lock when operating door switch after switching the power supply from ON position (or ACC
position) to LOCK position?
If door switch is malfunctioning, BC M cannot lock the steering. If BCM does not detect DTC, steering lock unit
is normal.
Does steering lock?
YES >> GO TO 4.
NO >> Refer to DLK-71, "
ComponentFunctionCheck".
4.CHECK IGNITION KNOB SWITCH OPERATION
Press ignition knob to check switch operation.
Does the combination meter display any message?
YES >> GO TO 5.
NO >> Refer to SEC-42, "
Ignition Knob Switch Check".
5.CHECK VEHICLE SECURITY SYSTEM
Check the vehicle security system for normal operation.
The vehicle security function can operate only when t he door lock and power distribution functions are operat-
ing normally.
Therefore, it is easy to identify any factor unique to the vehicle security by performing the vehicle security
operation check after this basic inspection.
>> Go to SEC-107, "
Vehicle Security Operation Check".
Vehicle Security Operation CheckINFOID:0000000003775948
1.INSPECTION START
Turn ignition switch “OFF”.
NOTE:
Before starting operation check, open front windows.
Revision: December 20092009 QX56

Page 4029 of 4171

INFINITI QX56 2009 Factory Service Manual WCS-52
< 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

Page 4030 of 4171

INFINITI QX56 2009 Factory Service Manual WCS
BCM (BODY CONTROL MODULE)WCS-53
< ECU DIAGNOSIS >
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receiver (power sup-
ply) Output OFF Ignition switch OFF
20 G/W Remote keyless entry
rec

Page 4050 of 4171

INFINITI QX56 2009 Factory Service Manual WT-8
< FUNCTION DIAGNOSIS >
TPMS
FUNCTION DIAGNOSIS
TPMS
System DiagramINFOID:0000000003772367
System DescriptionINFOID:0000000003772368
BODY CONTROL MODULE (BCM)
The BCM is shown with the lower instr

Page 4052 of 4171

INFINITI QX56 2009 Factory Service Manual WT-10
< FUNCTION DIAGNOSIS >
TPMS
System Component
INFOID:0000000004223589
AWEIA0126ZZ
1. Combination meter M23, M24 2. Display unit M93 3. Remote keyless entry receiver
M120
4. AV control unit M43,

Page 4131 of 4171

INFINITI QX56 2009 Factory Service Manual WW-44
< 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 co

Page 4132 of 4171

INFINITI QX56 2009 Factory Service Manual BCM (BODY CONTROL MODULE)WW-45
< ECU DIAGNOSIS >
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19 V/W Remote keyless entry
receiver (power sup-
ply) Output OFF Ignition switch OFF
20 G/W Remote keyless entry
rece

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