2008 INFINITI QX56 Factory Service Manual

headlights catalytic converter navigation set clock wheel bolt torque sunroof

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INFINITI QX56 2008 Factory Service Manual DLK-136
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
INTELLIGENT KEY UNIT POWER BACK DOOR INPUT SIGNAL
INTELLIGENT KEY UNIT POWER BACK DOOR INPUT SIGNAL
DescriptionINFOID:0000000001539045
Carr

DLK-136
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
INTELLIGENT KEY UNIT POWER BACK DOOR INPUT SIGNAL
INTELLIGENT KEY UNIT POWER BACK DOOR INPUT SIGNAL
DescriptionINFOID:0000000001539045
Carrying the Intelligent Key, enables the driver to
open the liftgate using the back door switch even when the
vehicle is locked. When pressing the back door switch, the back door switch sends this signal to the Intelligent
Key unit which treats it as a request switch signal. When the Intelligent Key unit, using the rear bumper
antenna, validates the presence of the Intelligent Key, it sends an open signal to the back door control unit
regardless whether the vehicle is locked.
Rear bumper antenna is mounted on the rear bumper and is used to allow the back door handle opening of
the locked back door when the Intelligent Key is present.
Diagnosis ProcedureINFOID:0000000001539046
1.BACK DOOR SWITCH SIGNAL INSPECTION
With all doors unlocked, check the back door switch operation by pressing the back door switch.
Did the back door respond correctly by opening?
YES >> GO TO 2
NO >> Refer to DLK-134, "
Diagnosis Procedure".
2.KEYFOB SIGNAL INSPECTION
Check keyfob operation using lock and unlock buttons.
Did the keyfob operate correctly?
YES >> GO TO 3
NO >> Refer to DLK-102, "
Diagnosis Procedure".
3.INTELLIGENT KEY UNIT SIGNAL INSPECTION
NOTE:
Since the diode is a uni-directional component, pay close attention to the polarity of the ohmmeter
being used as the presence of a diode in the circuit will affect the result.
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit, back door sw itch and back door control unit connectors.
3. Check continuity between Intelligent Key unit connector (A) M70 terminal 29 and back door switch connector (B) D706 terminal 3.
4. Check continuity between Intelligent Key unit connector (A) M70 terminal 29 and ground.
Is the inspection result normal?
YES >> Replace the Intelligent Key unit.
NO >> Repair or replace the harness or the diode as neces- sary.
29 (+) - 3 (-) : Continuity should exist.
29 (+) - Ground (-) : Conti
nuity should not exist.ALKIA1793ZZ
Revision: March 2010 2008 QX56

Page 930 of 4083

INFINITI QX56 2008 Factory Service Manual INTELLIGENT KEY UNIT POWER BACK DOOR OUTPUT SIGNAL
DLK-137
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
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INTELLIGENT KEY UNIT POWE R BACK DOOR OUTPUT SIGNAL
D

Page 931 of 4083

INFINITI QX56 2008 Factory Service Manual DLK-138
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
HOMELINK UNIVERSAL TRANSCEIVER
HOMELINK UNIVERSAL TRANSCEIVER
Wiring DiagramINFOID:0000000001744759
ALKWA0076GB
Revision: March 2010
2008 Q

Page 932 of 4083

INFINITI QX56 2008 Factory Service Manual HOMELINK UNIVERSAL TRANSCEIVERDLK-139
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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DLK
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DescriptionINFOID:0000000001539049
Homelink universal transceiver can stor

Page 933 of 4083

INFINITI QX56 2008 Factory Service Manual DLK-140
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
HOMELINK UNIVERSAL TRANSCEIVER
Component Function Check
INFOID:0000000001539050
1.CHECK FUNCTION
Check that system receiver (garage door op

Page 934 of 4083

INFINITI QX56 2008 Factory Service Manual HOMELINK UNIVERSAL TRANSCEIVERDLK-141
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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2.CHECK GROUND CIRCUIT
Check continuity between auto anti-dazzling inside

Page 935 of 4083

INFINITI QX56 2008 Factory Service Manual DLK-142
< ECU DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BCM (BODY CONTROL MODULE)
ECU DIAGNOSIS
BCM (BODY CONTROL MODULE)
Reference ValueINFOID:0000000004884071
VALUES ON THE DIAGNOSIS TOOL
Monitor Ite

Page 936 of 4083

INFINITI QX56 2008 Factory Service Manual BCM (BODY CONTROL MODULE)DLK-143
< ECU DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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HEADLAMP SW1 Headlamp switch OFF OFF
Headlamp switch 1st
ON
HEADLAMP SW2 Headlamp swi

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