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![INFINITI QX56 2008 Factory Service Manual DLK-104
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
HORN FUNCTION
HORN FUNCTION
DescriptionINFOID:0000000001539014
Perform answer-back for each operation with horn.
Component Function CheckIN INFINITI QX56 2008 Factory Service Manual DLK-104
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
HORN FUNCTION
HORN FUNCTION
DescriptionINFOID:0000000001539014
Perform answer-back for each operation with horn.
Component Function CheckIN](/manual-img/42/57030/w960_57030-896.png)
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
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HORN FUNCTIONDLK-105
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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
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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.
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WARNING CHIME FUNCTIONDLK-107
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WARNING CHIME FUNCTION
DescriptionINFOID:0000000001539020
Performs operation method guide and warning with buzzer.
Component Function CheckINFOID:0000000001539021
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 DLK-107, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001539022
1.CHECK METER BUZZER CIRCUIT
The inoperative warning chime is contained inside the combination meter. Replace combination meter. Refer
to MWI-76, "
Removal and Installation".
>> Inspection End.
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DLK-108
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
HAZARD FUNCTION
HAZARD FUNCTION
DescriptionINFOID:0000000001539023
Perform answer-back for each operation with number of blinks.
Component Function CheckINFOID:0000000001539024
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-108, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001539025
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-68, "
Wiring Diagram".
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![INFINITI QX56 2008 Factory Service Manual KEY SWITCH (INTELLIGENT KEY UNIT INPUT)
DLK-109
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KEY SWITCH (INTELLIGENT KEY UNIT INPUT)
Diagnosis ProcedureINFOI INFINITI QX56 2008 Factory Service Manual KEY SWITCH (INTELLIGENT KEY UNIT INPUT)
DLK-109
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KEY SWITCH (INTELLIGENT KEY UNIT INPUT)
Diagnosis ProcedureINFOI](/manual-img/42/57030/w960_57030-901.png)
KEY SWITCH (INTELLIGENT KEY UNIT INPUT)
DLK-109
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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
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![INFINITI QX56 2008 Factory Service Manual 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 INFINITI QX56 2008 Factory Service Manual 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](/manual-img/42/57030/w960_57030-902.png)
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
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![INFINITI QX56 2008 Factory Service Manual KEY SWITCH (BCM INPUT)DLK-111
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KEY SWITCH (BCM INPUT)
Diagnosis ProcedureINFOID:0000000001539027
1.CHECK KEY SWIT INFINITI QX56 2008 Factory Service Manual KEY SWITCH (BCM INPUT)DLK-111
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Diagnosis ProcedureINFOID:0000000001539027
1.CHECK KEY SWIT](/manual-img/42/57030/w960_57030-903.png)
KEY SWITCH (BCM INPUT)DLK-111
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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