INFINITI QX56 2009 Factory Service Manual

HORN FUNCTIONDLK-109
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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3. Check continuity between IPDM E/R harness connector and horn relay harness connector.
4. Check continuity between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
4.CHECK INTERMITTENT INCIDENT
Refer to GI-38, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace IPDM E/R. Refer to PCS-34, "Removal and Installation of IPDM E/R".
NO >> Repair or replace the malfunctioning part.
WIIA0679E
IPDM E/R Horn relay
Continuity
Connector TerminalConnector Terminal
E122 45H-1 1Yes
IPDM E/R GroundContinuity
Connector Terminal
E122 45Ground No
Revision: December 20092009 QX56

DLK-110
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
COMBINATION METER DISPLAY FUNCTION
COMBINATION METER DISPLAY FUNCTION
DescriptionINFOID:0000000003775785
Displays each operation method guide and warning for system malfunction.
Component Function CheckINFOID:0000000003775786
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-110, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003775787
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: December 20092009 QX56

WARNING CHIME FUNCTIONDLK-111
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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WARNING CHIME FUNCTION
DescriptionINFOID:0000000003775788
Performs operation method guide and warning with buzzer.
Component Function CheckINFOID:0000000003775789
1.CHECK FUNCTION
With CONSULT-III
1. Check the operation with "INSIDE BUZZER" in the Active Test.
2. Touch “TAKE OUT”, “KNOB”or “KEY” on screen.
Is the inspection result normal?
Yes >> Warning buzzer into combination meter is OK.
No >> Refer to D L K - 111 , "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003775790
1.CHECK METER BUZZER CIRCUIT
The inoperative warning chime is contained inside the combination meter. Replace combination meter. Refer
to MWI-102, "
Removal and Installation".
>> Inspection End.
Revision: December 20092009 QX56

DLK-112
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
HAZARD FUNCTION
HAZARD FUNCTION
DescriptionINFOID:0000000003775791
Perform answer-back for each operation with number of blinks.
Component Function CheckINFOID:0000000003775792
1.CHECK FUNCTION
Check hazard warning lamp "FLASHER" in ACTIVE TEST.
Is the inspection result normal?
YES >> Hazard warning lamp circuit is OK.
NO >> Refer to DLK-112, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003775793
1.CHECK HAZARD SWITCH CIRCUIT
Operate the hazard lights by turni ng ON the hazard warning switch.
Do the lights operate normally?
YES >> Replace the BCM. Refer to BCS fo r replacement and configuration procedure.
NO >> Repair or replace hazard warning switch circuit. Refer to EXL-78, "
Wiring Diagram".
Revision: December 20092009 QX56

KEY SWITCH (INTELLIGENT KEY UNIT INPUT)
DLK-113
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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KEY SWITCH (INTELLIGENT KEY UNIT INPUT)
Diagnosis ProcedureINFOID:0000000003775794
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: December 20092009 QX56

DLK-114
< 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: December 20092009 QX56

KEY SWITCH (BCM INPUT)DLK-115
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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KEY SWITCH (BCM INPUT)
Diagnosis ProcedureINFOID:0000000003775795
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: December 20092009 QX56

DLK-116
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
IGNITION KNOB SWITCH
IGNITION KNOB SWITCH
Ignition Knob
Switch CheckINFOID:0000000003775796
1.CHECK IGNITION KNOB SWITCH
With CONSULT-III
Display “PUSH SW” on DATA MONITOR screen, and check if ON/OFF display is linked to ignition switch oper-
ation.
Without CONSULT-III
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit connector.
3. Check voltage between Intelligent Key unit harness connector M70 terminal 27 and ground.
Is the inspection result normal?
YES >> Ignition knob switch is OK.
NO >> GO TO 2
2.CHECK IGNITION KNOB SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect key switch and ignition knob switch connector.
3. Check voltage between key switch and ignition knob switch harness connector M12 terminal 1 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 IGNITION KNOB SWITCH OPERATION
Check continuity between key switch and ignition knob switch terminals 1 and 2.
Monitor item Condition
PUSH SW Ignition switch is pushed: ON
Ignition switch is released: OFF
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (–)
M70 27 Ground Ignition switch is
pushed
Battery voltage
Ignition switch is re-
leased 0
WIIA1175E
1 - Ground
: Battery voltage
PIIB4257E
Revision: December 20092009 QX56

IGNITION KNOB SWITCHDLK-117
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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Is the inspection result normal?
YES >> GO TO 4
NO >> Replace key switch and ignition knob switch.
4.CHECK IGNITION KN OB SWITCH CIRCUIT
1. Check continuity between Intelligent Key unit harness connector (A) M70 terminal 27 and key switch and ignition knob switch harness c onnector (B) M12 terminal 2.
2. Check continuity between Intelligent Key unit harness connector M70 terminal 27 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
Ignition
knob switch 12 Ignition switch is pushed Yes
Ignition switch is released No
PIIA9929E
27 - 2
: Continuity should exist.
27 - Ground : Continuity should not exist.
WIIA1176E
Revision: December 20092009 QX56

DLK-118
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
HEADLAMP FUNCTION
HEADLAMP FUNCTION
Diagnosis ProcedureINFOID:0000000003775797
1.CHECK HEADLAMP OPERATION
Do headlamps operate with headlamp switch?
YES or NO
YES >> Headlamp circuit is OK.
NO >> Check headlamp circuit. Refer to EXL-4, "
Work Flow".
Revision: December 20092009 QX56