INFINITI QX56 2009 Factory Service Manual

DOOR LOCK ACTUATORDLK-89
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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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 LH.
2. Check continuity between BCM connector (A) M20 terminals 65, 66 and rear door lock actuator LH connector (B) D205 terminals
2, 3.
Is the inspection result normal?
YES >> Replace rear door lock actuator LH.
NO >> Repair or replace harness or passenger select unlock relay.
3.CHECK DOOR LOCK ACTUATOR HARNESS
1. Disconnect BCM and each door lock actuator.
2. Check continuity between BCM connector M20 terminals 65, 66 and ground.
Is the inspection result normal?
YES >> Replace BCM. Refer to BCS-56, "Removal and Installation".
NO >> Repair or replace harness or passenger select unlock relay.
REAR RH
REAR RH : DescriptionINFOID:0000000003775758
Locks/unlocks the door with the signal from BCM.
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
ALKIA0629ZZ
Terminals Continuity
65 Ground No
66 No
ALKIA0631ZZ
Revision: December 20092009 QX56

DLK-90
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DOOR LOCK ACTUATOR
REAR RH : Component Function Check
INFOID:0000000003775759
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:0000000003775760
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
1. Disconnect BCM and rear door lock actuator RH.
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: December 20092009 QX56

DOOR LOCK ACTUATORDLK-91
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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2. Check continuity between BCM connector (A) M20 terminals 65, 66 and ground.
Is the inspection result normal?
YES >> Replace BCM. Refer to BCS-56, "Removal and Installation".
NO >> Repair or replace harness or passenger select unlock relay.
BACK DOOR
BACK DOOR : DescriptionINFOID:0000000003775761
All vehicles equipped with an automatic back door syste m are not equipped with a back door actuator. Open-
ing and closing the back door is accomplished through the back door control unit assembly. Refer to DLK-123,
"Self-Diagnosis Procedure".
Terminals Continuity
65 Ground No
66 No
ALKIA0631ZZ
Revision: December 20092009 QX56

DLK-92
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
GLASS HATCH LOCK ACTUATOR
GLASS HATCH LOCK ACTUATOR
Diagnosis ProcedureINFOID:0000000004190669
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-56, "
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-244,
"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: December 20092009 QX56

PASSENGER SELECT UNLOCK RELAYDLK-93
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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PASSENGER SELECT UNLOCK RELAY
DescriptionINFOID:0000000003775762
Controls the operation of bot h rear door lock actuators.
Component Function CheckINFOID:0000000003775763
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:0000000003775764
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: December 20092009 QX56

DLK-94
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
PASSENGER SELECT UNLOCK RELAY
1. Check continuity between passenger select unlock relay con-
nector (A) M7 terminal 4 and rear door lock actuator LH connec-
tor (B) D205 terminal 2 or rear door lock actuator RH connector
(C) D305 terminal 2.
2. Check continuity between passenger select unlock relay con- nector (A) M7 terminal 4 and ground.
Is the inspection result normal?
YES >> Replace passenger select unlock relay.
NO >> Repair or replace harness between relay and actuator.
4.CHECK REAR DOOR LOCK ACTUATOR ASSEMBLY
1. Reconnect BCM.
2. Check voltage between rear door lock actuator connector LH (A) D205 terminals 2 and 3 or rear door lock actuator connector RH
(B) D305 terminals 2 and 3.
3. Check voltage between rear door lock actuator connector LH (A) D205 or rear door lock actuator connector RH (B) D305 termi-
nals 2 and 3.
Is the inspection result normal?
YES >> Replace rear door lock actuator.
NO >> Repair or replace harness between actuator and splice. 4 - 2
: Continuity should exist.
4 - Ground : Continuity should not exist.
ALKIA1636ZZ
ConnectorTe r m i n a l s
Condition Voltage (V)
(Approx.)
(+) (-)
A: D205 (LH) 3 2 Main power window and door lock/unlock switch is
turned to LOCK0
→ Battery voltage
for 300 msec.
B: D305 (RH) 3 2
ALKIA1637ZZ
Connector Te r m i n a l s
Condition Voltage (V)
(Approx.)
(+) (-)
A: D205 (LH) 2 3 Main power window and
door lock/unlock switch is
turned to UNLOCK0
→ Battery voltage
for 300 msec.
B: D305 (RH) 2 3
ALKIA1638ZZ
Revision: December 20092009 QX56

INTELLIGENT KEY WARNING BUZZERDLK-95
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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INTELLIGENT KEY WARNING BUZZER
DescriptionINFOID:0000000003775765
Answers back and warns for an inappropriate operation.
Component Function CheckINFOID:0000000003775766
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:0000000003775767
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".
>> Inspection End.
1 - Ground : Battery voltage
WIIA1195E
4 - 3: Continuity should exist.
3 - Ground : Continuity should not exist.
WIIA1196E
Revision: December 20092009 QX56

DLK-96
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
INTELLIGENT KEY WARNING BUZZER
Component Inspection
INFOID:0000000003775768
1.CHECK INTELLIGENT KEY WARNING BUZZER
Connect battery power supply to Intelligent Key warning buzzer ter-
minals 1 and 3, and check the operation.
Is the inspection result normal?
YES >> Inspection End.
NO >> Replace Intelligent Key warning buzzer. 1 (BAT+) - 3 (BAT-) : the buzzer sounds
WIIA1197E
Revision: December 20092009 QX56

OUTSIDE KEY ANTENNADLK-97
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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OUTSIDE KEY ANTENNA
DescriptionINFOID:0000000003775769
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:0000000003775770
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-136, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003775771
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?
YES >> Outside key antenna is OK.
NO >> GO TO 2
2.CHECK OUTSIDE KEY ANTENNA CIRCUIT
1. Disconnect Intelligent Key unit connector and outside key antenna connector.
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: December 20092009 QX56

DLK-98
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
OUTSIDE KEY ANTENNA
2. Check continuity between each outside key antenna harness connector (B) D15 (driver side) or D115
(passenger side), rear bumper antenna connector (C) C7 terminals 1, 2 and Intelligent Key unit harness
connector (A) M70 terminals 17, 18, 19, 20, 37, and 38.
3. Check continuity between each outside key antenna harness connector terminals 1, 2 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness between outside key antenna and Intelligent Key unit.
3.CHECK OUTSIDE KEY ANTENNA POWER SUPPLY
1. Replace outside key antenna. (New antenna or other antenna)
2. Connect Intelligent Key unit connector and outside key antenna connector.
3. Check signal between Intelligent Key unit connector terminals 17, 19, 37 and ground with an oscilloscope.
Is the inspection result normal?
YES >> Replace outside key antenna.
NO >> Replace Intelligent Key unit. Refer to S E C - 111 , "
Removal and Installation".
Item Connector Terminal Connector Terminal Continuity
Rear
bumper an- tenna C: C7 1
A: M70 17
Ye s
21
8
Front out-
side anten- na LH B: D15 11
9
22 0
Front out-
side anten-
na RH B: D115
13
7
23 8
Item Connector Terminal Continuity
Rear bumper anten- na C: C7 1
Ground No
2
Front outside anten- na LH B: D151
2
Front outside anten- na RH B: D115 1
2
ALKIA0652ZZ
Connector Item Te r m i n a l s
Condition Signal
(Reference value)
(+) (-)
M70 Rear
bumper
17
Ground Request
switch is
pushed
LH side 19
RH side 37
WIIA1198E
SIIA1910J
Revision: December 20092009 QX56