2008 INFINITI QX56 remote control

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Page 3004 of 4083

INFINITI QX56 2008 Factory Service Manual RF-20
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
19 V/WRemote keyless entry
receiver (power sup-
ply) Output OFF Ignition switch OFF
20 G/W Remote keyless entry
receiver (signal) Input OFFStand-by

Page 3214 of 4083

INFINITI QX56 2008 Factory Service Manual SEC-6
< BASIC INSPECTION >[WITH INTELLIGENT KEY SYSTEM]
PRE-INSPECTION FOR DIAGNOSTIC
PRE-INSPECTION
FOR DIAGNOSTIC
Basic InspectionINFOID:0000000004807932
The engine start function, door lock functi

SEC-6
< BASIC INSPECTION >[WITH INTELLIGENT KEY SYSTEM]
PRE-INSPECTION FOR DIAGNOSTIC
PRE-INSPECTION
FOR DIAGNOSTIC
Basic InspectionINFOID:0000000004807932
The engine start function, door lock function, power distribution system and NATS-IVIS/ NVIS 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 identify 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 syst em by performing the vehicle security operation check
after basic inspection.
1.CHECK DOOR LOCK OPERATION
Check the door lock for normal operation with the In telligent 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-200, "
Symptom Table".
2.CHECK ENGINE STARTING
Check that the engine starts when operating with the Intelligent Key.
Does the engine start?
YES >> GO TO 3.
NO >> Refer to S E C - 111 , "
Symptom Table".
3.CHECK STEERING LOCK
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-67, "
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-44, "
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 the 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-6, "
Vehicle Security Operation Check".
Vehicle Security Operation CheckINFOID:0000000004807933
1.INSPECTION START
Turn ignition switch OFF”.
NOTE:
Before starting operation check, open front windows.
>> GO TO 2.
Revision: March 2010 2008 QX56

Page 3223 of 4083

INFINITI QX56 2008 Factory Service Manual NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)
SEC-15
< FUNCTION DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
SEC
N
O P
Component Parts LocationINFOID:0000000001539106
Component De

Page 3262 of 4083

INFINITI QX56 2008 Factory Service Manual SEC-54
< ECU DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BCM (BODY CONTROL MODULE)
Te r m i n a lWire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ig

Page 3263 of 4083

INFINITI QX56 2008 Factory Service Manual BCM (BODY CONTROL MODULE)SEC-55
< ECU DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
SEC
N
O P
19 V/W Remote keyless entry
receiver (power sup-
ply) Output OFF Ignition switch OFF

Page 3931 of 4083

INFINITI QX56 2008 Factory Service Manual WCS-54
< 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 3932 of 4083

INFINITI QX56 2008 Factory Service Manual WCS
BCM (BODY CONTROL MODULE)WCS-55
< ECU DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P19 V/W Remote keyless entry
receiver (power sup-
ply) Output OFF Ignition switch OFF
20 G/W Remote keyless entry
rec

Page 3954 of 4083

INFINITI QX56 2008 Factory Service Manual WT-8
< FUNCTION DIAGNOSIS >
TPMS
FUNCTION DIAGNOSIS
TPMS
System DiagramINFOID:0000000001735375
System DescriptionINFOID:0000000001735376
BODY CONTROL MODULE (BCM)
The BCM is shown with the lower instr

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