2008 INFINITI QX56 ignition

DLK-96
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
STEERING LOCK UNIT
Is the inspection result normal?
YES >> GO TO 5
NO >> GO TO 6
5.CHECK STEERING LOCK SOLENOID COMMUNICA
TION CIRCUIT FOR OPEN
1. Disconnect Intelligent Key unit and steering lock solenoid connectors.
2. Check continuity between Intelligent Key unit harness connector (B) M70 terminals 1, 32 and steering lock solenoid connector (A) M15 terminals 2, 3.
Is the inspection result normal?
YES >> Replace steering lock solenoid. • After replacing steering lock solenoid, perform regis-
tration procedure. Refer to SEC-13, "
System Descrip-
tion".
NO >> Repair or replace harness between steering lock sole-
noid and Intelligent Key unit.
6.CHECK STEERING LOCK SOLENOID COMMUNICATION CIRCUIT FOR SHORT
1. Disconnect Intelligent Key unit and steering lock solenoid connectors.
2. Check continuity between steering lock so lenoid connector M15 terminals 2, 3 and ground.
Is the inspection result normal?
YES >> Replace Intelligent Key unit. Refer to SEC-116,
"Removal and Installation".
NO >> Repair or replace harness between steering lock sole-
noid and Intelligent Key unit.
Connector Te r m i n a l s
Condition Signal (V)
(Reference value)
(+) (–)
M70 32 Ground Ignition
switch is
pushed
WIIA1205ESIIA1911J
1 - 2 : Continuity should exist.
32 - 3 : Continuity should exist.
ALKIA0661ZZ
2 - Ground : Continuity should not exist.
3 - Ground : Continuity should not exist.
ALKIA0662ZZ
Revision: March 2010 2008 QX56

A/T SHIFT SELECTOR (PARK POSITION SWITCH)DLK-97
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
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F
G H
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M A
B
DLK
N
O P
A/T SHIFT SELECTOR (PARK POSITION SWITCH)
Diagnosis ProcedureINFOID:0000000001539005
1.CHECK A/T SHIFT SELECTOR (PARK POSITION SWITCH) INPUT SIGNAL
1. Turn ignition switch OFF.
2. While pressing the ignition knob switch, check voltage between Intelligent Key unit harness connector M70 terminal 39 and ground.
Is the inspection result normal?
YES >> Replace Intelligent Key unit. Refer to SEC-116,
"Removal and Installation".
NO >> GO TO 2
2.CHECK A/T SHIFT SELECTOR (PARK POSI TION SWITCH) POWER SUPPLY CIRCUIT
1. Disconnect A/T shift selector (park position switch) connector.
2. While pressing the ignition knob switch, check voltage between A/T shift selector (park position switch) harness connector M203
terminal 5 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness or ignition knob switch.
3.CHECK A/T SHIFT SELECTOR (PARK POSITION SWITCH)
Check continuity between A/T shift selector (park position switch) terminals 5 and 6.
Is the inspection result normal?
YES >> GO TO 4
NO >> Replace A/T shift selector (park position switch).
4.CHECK A/T SHIFT SELECTOR (PARK POSITION SWITCH) CIRCUIT
1. Disconnect Intelligent Key unit connector.
Connector Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M70 39 Ground A/T shift selector lever is in "P"
position
Battery voltage
Other than above 0
WIIA1211E
5 – Ground : Battery voltage.
ALKIA0663ZZ
Component Terminals ConditionContinuity
A/T shift se- lector (park position
switch) 56A/T shift selector lever is in "P"
position
Ye s
Other than above No
ALKIA0664ZZ
Revision: March 2010 2008 QX56

REMOTE KEYLESS ENTRY RECEIVERDLK-99
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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G H
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M A
B
DLK
N
O P
REMOTE KEYLESS ENTRY RECEIVER
DescriptionINFOID:0000000001539006
Receives Intelligent Key operation and transmits to Intelligent Key unit.
Component Function CheckINFOID:0000000001539007
1.CHECK FUNCTION
With CONSULT-III
Check remote keyless entry receiver "RKE OPE COUN1" in Data Monitor mode with CONSULT-III.
Is the inspection result normal?
YES >> Remote keyless entry receiver is OK.
NO >> Refer to DLK-99, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001539008
1.CHECK REMOTE KEYLESS ENTRY RECEIVER OUTPUT SIGNAL
1. Turn ignition switch OFF.
2. Check remote keyless entry receiver signal with an oscilloscope.
Is the inspection result normal?
YES >> GO TO 2
NO >> GO TO 5
2.REMOTE KEYLESS ENTRY RECEIV ER VOLTAGE CIRCUIT INSPECTION
Check voltage between remote keyless entry receiver connector M25 terminal 3 and ground using an oscillo-
scope.
Monitor item Condition
RKE OPE COUN1 Checks whether value changes when operating Intelligent Key.
Te r m i n a l s
Keyfob
condition Signal
(Reference value)
(+)
(–)
Remote
keyless
entry re- ceiver
connector Te r m i n a l
M25 2 Ground No function
Any button
is pressed
ALKIA0653ZZ
OCC3879D
OCC3880D
Revision: March 2010 2008 QX56

DLK-104
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
HORN FUNCTION
HORN FUNCTION
DescriptionINFOID:0000000001539014
Perform answer-back for each operation with horn.
Component Function CheckINFOID:0000000001539015
1.CHECK FUNCTION
1. Select "HORN" in “ACTIVE TEST” mode with CONSULT-III.
2. Check the horn (high/low) operation.
Is the operation normal?
YES >> Inspection End.
NO >> Go to DLK-104, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000001539016
1.CHECK HORN FUNCTION
Check horn function with horn switch
Do the horns sound?
YES >> GO TO 2
NO >> Go to HRN-4, "
Wiring Diagram".
2.CHECK HORN RELAY POWER SUPPLY
1. Turn ignition switch ON.
2. Perform “ACTIVE TEST”, "HORN" with CONSULT-Ill.
3. Using an oscilloscope or analog voltmeter, check voltage between horn relay harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> GO TO 3
3.CHECK HORN RELAY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R and horn relay connector.
Test item Description
HORN ON Horn relay ON (for 20 ms)
ALKIA0658ZZ
Horn relay
Ground Test item Voltage (V)
(Approx.)
Connector Terminal
H-1 1 Ground HORN ON
Battery voltage → 0 → Battery voltage
Other than above Battery voltage
Revision: March 2010 2008 QX56

DLK-106
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
COMBINATION METER DISPLAY FUNCTION
COMBINATION METER DISPLAY FUNCTION
DescriptionINFOID:0000000001539017
Displays each operation method guide and warning for system malfunction.
Component Function CheckINFOID:0000000001539018
1.CHECK FUNCTION
1. Turn ignition switch ON.
2. Open driver door.
Does the open door message appear on the LCD display?
YES >> Meter information display is OK.
NO >> Refer to DLK-106, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001539019
1.CHECK COMBINATION METER
Refer to MWI-62, "
DTC Index".
Is the inspection result normal?
YES >> GO TO 2
NO >> Check combination meter. Refer to MWI-4, "
Work Flow".
2.CHECK INTERMITTENT INCIDENT
Refer to GI-38, "
Intermittent Incident".
>> Inspection End.
Revision: March 2010 2008 QX56

KEY SWITCH (INTELLIGENT KEY UNIT INPUT)
DLK-109
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
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G H
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M A
B
DLK
N
O P
KEY SWITCH (INTELLIGENT KEY UNIT INPUT)
Diagnosis ProcedureINFOID:0000000001539026
1.CHECK KEY SWITCH
With CONSULT-III
Check key switch (“KEY SW”) in “DATA MONITOR” mode with CONSULT-III.
Without CONSULT-III
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit harness connector.
3. Check voltage between Intelligent Key unit harness connector M70 terminal 7 and ground.
Is the inspection result normal?
YES >> Key switch is OK.
NO >> GO TO 2
2.CHECK KEY SWITCH POWER SUPPLY CIRCUIT
1. Remove mechanical key from ignition switch.
2. Disconnect key switch and i gnition knob switch connector.
3. Check voltage between key switch and ignition knob switch harness connector M12 terminal 3 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace key switch and ignition knob switch power supply circuit.
3.CHECK KEY SWITCH OPERATION
Monitor item Condition
KEY SW Insert mechanical key into ignition switch: ON
Remove mechanical key from ignition switch: OFF
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (–)
M70 7 Ground Insert mechanical key
into ignition switch
Battery voltage
Remove mechanical
key from ignition switch 0
WIIA1173E
3 - Ground
: Battery voltage
PIIB4254E
Revision: March 2010 2008 QX56

DLK-110
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
KEY SWITCH (INTELLIGENT KEY UNIT INPUT)
Check continuity between key switch and ignition knob switch termi-
nals 3 and 4.
Is the inspection result normal?
YES >> GO TO 4
NO >> Replace key cylinder assembly (built-in key switch).
4.CHECK KEY SWITCH CIRCUIT
1. Check continuity between Intelligent Key unit harness connector (A) M70 terminal 7 and key switch and ignition knob switch harness connector (B) M12 terminal 4.
2. Check continuity between Inte lligent Key unit harness connector
(A) M70 terminal 7 and ground.
Is the inspection result normal?
YES >> Check the condition of harness and harness connector.
NO >> Repair or replace harness between Intelligent Key unit and key switch and ignition knob switch.
Component Terminals ConditionContinuity
Key switch 3 4 Insert mechanical key
into ignition switch.
Ye s
Remove mechanical key
from ignition switch. No
PIIA6140E
7 - 4
: Continuity should exist.
7 - Ground : Continuity should not exist.
WIIA1174E
Revision: March 2010 2008 QX56

KEY SWITCH (BCM INPUT)DLK-111
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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G H
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M A
B
DLK
N
O P
KEY SWITCH (BCM INPUT)
Diagnosis ProcedureINFOID:0000000001539027
1.CHECK KEY SWITCH POWER SUPPLY CIRCUIT
1. Remove mechanical key from ignition switch.
2. Disconnect key switch and i gnition knob switch connector.
3. Check voltage between key switch and ignition knob switch har- ness connector M12 terminal 3 and ground.
Is the inspection result normal?
YES >> GO TO 2
NO >> Check harness between key switch and ignition knob switch and fuse.
2.CHECK KEY SWITCH
Check continuity between key switch and ignition knob switch termi-
nals 3 and 4.
Is the inspection result normal?
YES >> GO TO 3
NO >> Replace key cylinder assembly (built-in key switch).
3.CHECK KEY SWITCH SIGNAL CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector M18 terminal 37 and key switch and ignition knob switch harness connector
M12 terminal 4.
3. Check continuity between BCM harness connector M18 terminal 37 and ground.
Is the inspection result normal?
YES >> Key switch (BCM input) circuit is OK.
NO >> Repair or replace harness between key switch and ignition knob switch and BCM. 3 – Ground
: Battery voltage.
PIIB4254E
Component Terminals ConditionContinuity
Ignition switch 34 Insert mechanical key
into ignition switch.
Ye s
Remove mechanical key
from ignition switch. No
PIIA6140E
37 – 4
: Continuity should exist.
37 – Ground : Continuity should not exist.
PIIB4256E
Revision: March 2010 2008 QX56