diagram INFINITI QX56 2010 Factory Service Manual

DLK-88
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DOOR LOCK ACTUATOR
NO >> GO TO 3
2.CHECK DOOR LOCK ACTUATOR HARNESS
1. Disconnect BCM and front door lock actuator RH.
2. Check continuity between BCM connector (A) M20 terminals 65, 66 and front door lock actuator RH (B) D114 terminals 2, 3.
Is the inspection result normal?
YES >> Replace front door lock actuator RH. Refer to DLK-242, "Removal and Installation".
NO >> Repair or replace harness.
3.CHECK DOOR LOCK ACTUATOR HARNESS
1. Disconnect BCM and front door lock actuator RH.
2. Check continuity between BCM connector M19 terminals 65, 66 and ground.
Is the inspection result normal?
YES >> Replace BCM. Refer to BCS-59, "Removal and Installation".
NO >> Repair or replace harness.
REAR LH
REAR LH : DescriptionINFOID:0000000005146952
Locks/unlocks the door with the signal from BCM.
REAR LH : Component Function CheckINFOID:0000000005146953
1.CHECK FUNCTION
1. Use CONSULT-III to perform Active Test "DOOR LOCK".
2. Touch “ALL LOCK” or “ALL UNLOCK” to check that it works normally.
Is the inspection result normal?
YES >> Door lock actuator is OK.
NO >> Refer to DLK-88, "
REAR LH : Diagnosis Procedure".
REAR LH : Diagnosis ProcedureINFOID:0000000005146954
Regarding Wiring Diagram information, refer to DLK-157, "Wiring Diagram — POWER DOOR LOCK SYS-
TEM —".
TerminalContinuity
65 3 Yes
66 2 Yes
ALKIA0630ZZ
Terminals Continuity
65 Ground No
66 No
ALKIA0631ZZ
Revision: April 20092010 QX56

DLK-90
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DOOR LOCK ACTUATOR
REAR RH : Description
INFOID:0000000005146955
Locks/unlocks the door with the signal from BCM.
REAR RH : Component Function CheckINFOID:0000000005146956
1.CHECK FUNCTION
1. Use CONSULT-III to perform Active Test "DOOR LOCK".
2. Touch “ALL LOCK” or “ALL UNLOCK” to check that it works normally.
Is the inspection result normal?
YES >> Door lock actuator is OK.
NO >> Refer to DLK-90, "
REAR RH : Diagnosis Procedure".
REAR RH : Diagnosis ProcedureINFOID:0000000005146957
Regarding Wiring Diagram information, refer to DLK-157, "Wiring Diagram — POWER DOOR LOCK SYS-
TEM —".
1.CHECK DOOR LOCK ACTUATOR SIGNAL
1. Turn ignition switch OFF.
2. Check voltage between BCM connector M20 terminals 65, 66 and ground.
Is the inspection result normal?
YES >> GO TO 2
NO >> GO TO 3
2.CHECK DOOR LOCK ACTUATOR HARNESS
1. Disconnect BCM and rear door lock actuator RH.
2. Check continuity between BCM connector (A) M20 terminals 65, 66 and rear door lock actuator RH connector (B) D305 terminals
2, 3.
Is the inspection result normal?
YES >> Replace rear door lock actuator RH.
NO >> Repair or replace harness or passenger select unlock relay.
3.CHECK DOOR LOCK ACTUATOR HARNESS
Connector Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M20 65
Ground Door lock/unlock switch
is turned to LOCK
0
→ Battery voltage
for 300 ms
66 Door lock/unlock switch
is turned to UNLOCK 0
→ Battery voltage
for 300 ms
LIIA1048E
Terminals Continuity
65 3 Yes
66 2 Yes
ALKIA0630ZZ
Revision: April 20092010 QX56

DLK-92
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
GLASS HATCH LOCK ACTUATOR
GLASS HATCH LOCK ACTUATOR
Diagnosis ProcedureINFOID:0000000005146959
Regarding Wiring Diagram information, refer to
DLK-157, "Wiring Diagram — POWER DOOR LOCK SYS-
TEM —".
1.CHECK GLASS HATCH LOCK ACTUATOR SIGNAL
1. Turn ignition switch OFF.
2. Check voltage between BCM connector M19 terminal 53 and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace BCM. Refer to BCS-59, "
Removal and Installa-
tion".
2.CHECK GLASS HATCH LOCK ACTUATOR HARNESS
1. Disconnect BCM and glass hatch lock actuator.
2. Check continuity between BCM connector (A) M19 terminal 53 and glass hatch lock actuator connector (B) D711 terminal 3.
3. Check continuity between BCM connector M19 terminals 53 and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harness.
3.CHECK GLASS HATCH LOCK ACTUATOR GROUND CIRCUIT
Check continuity between glass hat ch lock actuator connector D711
terminal 1 and ground.
Is the inspection result normal?
YES >> Replace glass hatch lock actuator. Refer to DLK-248,
"Door Lock Assembly".
NO >> Repair or replace harness.
Connector Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M19 53 Ground Glass hatch switch is
turned to depressed0
→ Battery voltage
for 300 ms
LIIA1938E
Terminals Continuity
53 3 Yes
Terminals Continuity
53 Ground No
ALKIA1789ZZ
Terminals Continuity
1 Ground Yes
ALKIA1790ZZ
Revision: April 20092010 QX56

PASSENGER SELECT UNLOCK RELAYDLK-93
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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PASSENGER SELECT UNLOCK RELAY
DescriptionINFOID:0000000005146960
Controls the operation of bot h rear door lock actuators.
Component Function CheckINFOID:0000000005146961
1.CHECK FUNCTION
1. Ensure "SELECTIVE UNLOCK FUNCTION" in WORK SUPPORT is enabled.
2. Use CONSULT-III to perform Active Test "DOOR LOCK".
3. Touch “ALL LOCK” or “ALL UNLOCK” to c heck that both rear doors work normally.
Is the inspection result normal?
YES >> Passenger select unlock relay is OK.
NO >> Refer to DLK-93, "
Component Function Check".
Diagnosis ProcedureINFOID:0000000005146962
Regarding Wiring Diagram information, refer to DLK-157, "Wiring Diagram — POWER DOOR LOCK SYS-
TEM —".
1.CHECK PASSENGER SELECT UNLOCK RELAY CIRCUIT
NOTE:
Passenger select unlock relay must remain connected during this step.
1. Turn ignition switch OFF.
2. Disconnect BCM and inoperative rear door lock actuator.
3. Check continuity between BCM connector (A) M20 terminal 66 and rear door lock actuator LH connector (B) D205 terminal 2 or
rear door lock actuator RH connector (C) D305 Terminal 2.
4. Check continuity between BCM connector M20 terminal 66 and body ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> GO TO 2
2.CHECK PASSENGER SELECT UNLOCK RELAY INPUT
1. Disconnect passenger select unlock relay.
2. Check continuity between BCM connector (A) M20 terminal 66 and passenger select unlock relay connector (B) M7 terminal 3.
3. Check continuity between BCM connector (A) M20 terminal 66 and body ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness between BCM and relay.
3.CHECK PASSENGER SELECT UNLOCK RELAY OUTPUT 66 - 2 : Continuity should exist.
66 - Ground
: Continuity should not exist.
ALKIA1634ZZ
66 - 3 : Continuity should exist.
66 - Ground : Continuity should not exist.
ALKIA1635ZZ
Revision: April 20092010 QX56

INTELLIGENT KEY WARNING BUZZERDLK-95
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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INTELLIGENT KEY WARNING BUZZER
DescriptionINFOID:0000000005146963
Answers back and warns for an inappropriate operation.
Component Function CheckINFOID:0000000005146964
1.CHECK FUNCTION
With CONSULT-III
Check Intelligent Key warning buzzer "OUTSIDE BUZZER" in Active Test mode.
Is the inspection result normal?
YES >> Intelligent Key warning buzzer (engine room) is OK.
NO >> Refer to DLK-95, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005146965
Regarding Wiring Diagram information, refer to DLK-178, "Wiring Diagram — INTELLIGENT KEY SYSTEM —
".
1.CHECK INTELLIGENT KEY WARNING BUZZER (ENGINE ROOM) POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key warning buzzer (engine room) connector.
3. Check voltage between Intelligent Key warning buzzer (engine room) harness connector E25 terminal 1 and ground.
Is the inspection normal?
YES >> GO TO 2
NO >> Repair or replace Intelligent Key warning buzzer (engine room) power supply circuit.
2.CHECK INTELLIGENT KEY WARNING BUZZER (ENGINE ROOM) CIRCUIT
1. Disconnect Intelligent Key unit connector.
2. Check continuity between Intelligent Key unit harness connector (A) M70 terminal 4 and Intelligent Key warning buzzer (engine
room) harness connector E25 terminal 3.
3. Check continuity between Intelligent Key warning buzzer (engine room) harness connector E25 terminal 3 and ground.
Is the inspection normal?
YES >> GO TO 3
NO >> Repair or replace harness between Intelligent Key warning buzzer (engine room) and Intelligent Key unit.
3.CHECK INTELLIGENT KEY WARNING BU ZZER (ENGINE ROOM) OPERATION
Check DLK-96, "
Component Inspection".
1 - Ground : Battery voltage
WIIA1195E
4 - 3: Continuity should exist.
3 - Ground : Continuity should not exist.
WIIA1196E
Revision: April 20092010 QX56

OUTSIDE KEY ANTENNADLK-97
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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OUTSIDE KEY ANTENNA
DescriptionINFOID:0000000005146967
Detects whether the Intelligent Key is in the operating range of the outside antennas.
Front outside antennas are integrated in front outside door handles (driver side, passenger side) to allow lock-
ing and unlocking of door locks when the Intelligent Key is present.
Rear bumper antenna is mounted on the rear bumper and is used to allow the back door and glass hatch
switch assembly opening of the back door when the Intelligent Key is present.
Component Function CheckINFOID:0000000005146968
1.CHECK DOOR REQUEST SWITCHES
Check that door request switches operate normally.
Is the inspection result normal?
YES >> GO TO 2
NO >> Inspect door request switches. Refer to DLK-83, "
ComponentFunctionCheck".
2.CHECK OUTSIDE KEY ANTENNAS FUNCTION
Be sure that Intelligent Key is in each outside key antenna detection range.
Does door lock/unlock when each request switch is pressed?
YES >> GO TO 3
NO >> Refer to DLK-97, "
Diagnosis Procedure".
3.CHECK REAR ANTENNA FUNCTION
Be sure that Intelligent Key is in rear bumper antenna detection range.
Be sure that back door close switch is not in the "CANCEL" position.
Does power back door open when back door switch is operated?
YES >> Outside key antennas are OK.
NO >> Refer to DLK-138, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005146969
Regarding Wiring Diagram information, refer to DLK-178, "Wiring Diagram — INTELLIGENT KEY SYSTEM —
".
1.CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL
1. Turn ignition switch OFF.
2. Check signal between Intelligent Key unit connector M70 terminals 17, 19, 37 and ground with an oscillo- scope.
Is the inspection result normal?
Connector Item Te r m i n a l s
Condition Signal
(Reference value)
(+) (-)
M70 Rear
bumper
antenna
17
Ground Request
switch is
pushed
Front out-
side an-
tenna LH
19
Front out-
side an-
tenna RH 37
WIIA1198E
SIIA1910J
Revision: April 20092010 QX56

STEERING LOCK UNITDLK-99
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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STEERING LOCK UNIT
Diagnosis ProcedureINFOID:0000000005146970
Regarding Wiring Diagram information, refer to DLK-178, "Wiring Diagram — INTELLIGENT KEY SYSTEM —
".
1.CHECK STEERING LOCK SOLENOID POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect steering lock solenoid connector.
3. Check voltage between steering lock solenoid harness connector M15 terminal 1 and ground.
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace steering lock solenoid power supply circuit.
2.CHECK STEERING LOCK SOLENOID GROUND CIRCUIT
Check continuity between steering lock sol enoid harness connector M15 terminal 4 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace the steering lock solenoid ground cir- cuit.
3.CHECK INTELLIGENT KEY UNIT OUTPUT SIGNAL
1. Connect steering lock solenoid connector.
2. Check voltage between Intelligent Key unit harness connector M70 terminal 1 and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> GO TO 6
4.CHECK STEERING LOCK COMMUNICATION SIGNAL
Check signal between Intelligent Key unit connector M70 terminal 32 and ground with oscilloscope. 1 - Ground : Battery voltage
WIIA1202E
4 - Ground
: Continuity should exist.
WIIA1203E
1 - Ground : Approx. 5V
WIIA1204E
Revision: April 20092010 QX56

A/T SHIFT SELECTOR (PARK POSITION SWITCH)DLK-101
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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A/T SHIFT SELECTOR (PARK POSITION SWITCH)
Diagnosis ProcedureINFOID:0000000005146971
Regarding Wiring Diagram information, refer to DLK-178, "Wiring Diagram — INTELLIGENT KEY SYSTEM —
".
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-120,
"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
Connector Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M70 39 Ground 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) 56Selector lever is in "P" position Yes
Other than above
No
ALKIA0664ZZ
Revision: April 20092010 QX56

REMOTE KEYLESS ENTRY RECEIVERDLK-103
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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REMOTE KEYLESS ENTRY RECEIVER
DescriptionINFOID:0000000005146972
Receives Intelligent Key operation and transmits to Intelligent Key unit.
Component Function CheckINFOID:0000000005146973
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-103, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005146974
Regarding Wiring Diagram information, refer to DLK-178, "Wiring Diagram — INTELLIGENT KEY SYSTEM —
".
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
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: April 20092010 QX56

DLK-108
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
HORN FUNCTION
HORN FUNCTION
DescriptionINFOID:0000000005146978
Perform answer-back for each operation with horn.
Component Function CheckINFOID:0000000005146979
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-108, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000005146980
Regarding Wiring Diagram information, refer to DLK-178, "Wiring Diagram — INTELLIGENT KEY SYSTEM —
".
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
Test item Description
HORN ON Horn relay ON (for 20 ms)
ALKIA0658ZZ
Horn relay
Ground Test item Voltage (V)
(Approx.)
Connector Terminal
H-1 1Ground HORN ON
Battery voltage → 0 → Battery voltage
Other than above Battery voltage
Revision: April 20092010 QX56