2010 INFINITI QX56 ignition

FRONT DOOR LOCK ACTUATOR LH (DOOR UNLOCK SENSOR)DLK-81
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
FRONT DOOR LOCK ACTUATOR LH (DOOR UNLOCK SENSOR)
DescriptionINFOID:0000000005146938
Detects door lock condition of driver door.
Component Function CheckINFOID:0000000005146939
1.CHECK FUNCTION
With CONSULT-III
Check door unlock sensor in DATA MONITOR mode.
Is the inspection result normal?
YES >> Door unlock sensor is OK.
NO >> Refer to DLK-81, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005146940
Regarding Wiring Diagram information, refer to DLK-178, "Wiring Diagram — INTELLIGENT KEY SYSTEM —
".
1.CHECK UNLOCK SENSOR POWER SUPPLY
Check voltage between Intelligent Key unit connector terminal 28 and ground.
Is the inspection result normal?
YES >> Front door lock assembly LH (door unlock sensor) is OK.
NO >> GO TO 2
2.CHECK UNLOCK SENSOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit and front door lock assembly LH (door unlock sensor) connector.
3. Check continuity between Intelligent Key unit harness connector
(A) M70 terminal 28 and front door lock assembly LH (door
unlock sensor) harness connector (B) D14 terminal 4.
4. Check continuity between Intelligent Key unit harness connector (A) M70 terminal 28 and ground.
Is the inspection result normal?
YES >> GO TO 3
Monitor item Condition
DOOR STAT SW (DR DOOR STATE) Front door lock (driver side) LOCK : OFF
Front door lock (driver side) UNLOCK : ON
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M70 28 Ground Driver side door lock is locked 5
Driver side door lock is un-
locked
0
WIIA1190E
28 – 4
: Continuity should exist.
28 – Ground : Continuity should not exist.
WIIA1191E
Revision: April 20092010 QX56

DOOR REQUEST SWITCHDLK-83
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
DOOR REQUEST SWITCH
DescriptionINFOID:0000000005146942
Transmits lock/unlock operation to Intelligent Key unit.
Component Function CheckINFOID:0000000005146943
1.CHECK FUNCTION
With CONSULT-III
Check door request switch "DR REQ SW" and "AS REQ SW" in DATA MONITOR mode.
Is the inspection result normal?
YES >> Door request switch is OK.
NO >> Refer to DLK-83, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005146944
Regarding Wiring Diagram information, refer to DLK-178, "Wiring Diagram — INTELLIGENT KEY SYSTEM —
".
1.CHECK FRONT DOOR REQUEST SWITCH
With CONSULT-III
Check front door request switch (“DR REQ SW” or “AS REQ SW”) in “DATA MONITOR” mode.
Without CONSULT-III
1. Turn ignition switch OFF.
2. Check voltage between Intelligent Key unit harness connector M70 terminals 5, 25 and ground.
Is the inspection result normal?
YES >> Front door request switch is OK.
NO >> GO TO 2
2.CHECK FRONT DOOR REQUEST SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit and front door request switch connectors.
Monitor item Condition
DR REQ SW
AS REQ SW Door request switch is pressed : ON
Door request switch is released : OFF
Monitor item Condition
DR REQ SW
AS REQ SW Front door request switch is pressed: ON
Front door request switch is released: OFF
Connector Item
Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (–)
M70 Front door re-
quest switch
LH
5
Ground Door request
switch is
pressed ↓
Door request
switch is re- leased 0
↓
Battery voltage
Front door re-
quest switch
RH 25
WIIA1183E
Revision: April 20092010 QX56

DOOR REQUEST SWITCHDLK-85
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
Component InspectionINFOID:0000000005146945
1.CHECK FRONT DOOR REQUEST SWITCH OPERATION
1. Turn ignition switch OFF.
2. Disconnect front door request switch connector.
3. Check continuity between front door request switch terminals 1 and 2.
Is the inspection result normal?
YES >> Inspection End.
NO >> Replace front door request switch.
Component Terminals Condition Continuity
Front door request
switch (LH or RH) 12Front door request
switch is pressed
Ye s
Front door request
switch is released No
PIIB6615E
Revision: April 20092010 QX56

DLK-86
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DOOR LOCK ACTUATOR
DOOR LOCK ACTUATOR
DRIVER SIDE
DRIVER SIDE : DescriptionINFOID:0000000005146946
Locks/unlocks the door with the signal from BCM.
DRIVER SIDE : Component Function CheckINFOID:0000000005146947
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-86, "
DRIVER SIDE : Diagnosis Procedure".
DRIVER SIDE : Diagnosis ProcedureINFOID:0000000005146948
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 59, 65 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 front door lock assembly LH (actuator).
2. Check continuity between BCM connector (A) M20 terminals 59, 65 and front door lock assembly LH (actuator) connector (B)
D14 terminals 2, 3.
Is the inspection result normal?
YES >> Replace front door lock assembly LH (actuator).
Connector Te r m i n a l s
Condition Voltage (V)
(Approx.)
(+) (-)
M20 59
Ground Driver door lock/unlock
switch is turned to UN-
LOCK
0
→ Battery voltage
65 Driver door lock/unlock
switch is turned to LOCK 0
→ Battery voltage
LIIA1046E
Connector Terminals Connector Terminals Continuity
M20 59
D14 2Y
es
65 3Yes
ALKIA0632ZZ
Revision: April 20092010 QX56

DOOR LOCK ACTUATORDLK-87
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
NO >> Repair or replace harness.
3.CHECK DOOR LOCK ACTUATOR HARNESS
1. Disconnect BCM and front door lock assembly LH (actuator).
2. Check continuity between BCM connector M20 terminals 59, 65 and ground.
Is the inspection result normal?
YES >> Replace BCM. Refer to BCS-59, "Removal and Installation".
NO >> Repair or replace harness.
PASSENGER SIDE
PASSENGER SIDE : DescriptionINFOID:0000000005146949
Locks/unlocks the door with the signal from BCM.
PASSENGER SIDE : Co mponent Function CheckINFOID:0000000005146950
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-87, "
PASSENGER SIDE : Diagnosis Procedure".
PASSENGER SIDE : Dia gnosis ProcedureINFOID:0000000005146951
Regarding Wiring Diagram information, refer to DLK-157, "Wiring Diagram — POWER DOOR LOCK SYS-
TEM —".
1.CHECK FRONT DOOR LOCK ACTUATOR RH 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
Connector Terminals Continuity
M20 59
Ground No
65 No
ALKIA0633ZZ
ConnectorTe 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
Revision: April 20092010 QX56

DOOR LOCK ACTUATORDLK-89
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
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 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-59, "Removal and Installation".
NO >> Repair or replace harness or passenger select unlock relay.
REAR 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
ALKIA0629ZZ
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