lock INFINITI QX56 2010 Factory Service Manual

DOOR LOCK ACTUATORDLK-89
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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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

DOOR LOCK ACTUATORDLK-91
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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1. Disconnect BCM and rear door lock actuator RH.
2. Check continuity between BCM connector (A) 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.
BACK DOOR
BACK DOOR : DescriptionINFOID:0000000005146958
All vehicles equipped with an automatic back door syst em are not equipped with a back door lock actuator.
Opening 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: 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

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: 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

DLK-100
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
STEERING LOCK UNIT
Is the inspection result normal?
YES >> GO TO 5
NO >> GO TO 6
5.CHECK STEERING LOCK SOLENOID COMMUNICA
TION CIRCUIT FOR OPEN
1. Disconnect Intelligent Key unit and steering lock solenoid connectors.
2. Check continuity between Intelligent Key unit harness connector (B) M70 terminals 1, 32 and steering lock solenoid connector (A) M15 terminals 2, 3.
Is the inspection result normal?
YES >> Replace steering lock solenoid. • After replacing steering lock solenoid, perform regis-
tration procedure. Refer to SEC-14, "
System Descrip-
tion".
NO >> Repair or replace harness between steering lock sole-
noid and Intelligent Key unit.
6.CHECK STEERING LOCK SOLENOID COMMUNICATION CIRCUIT FOR SHORT
1. Disconnect Intelligent Key unit and steering lock solenoid connectors.
2. Check continuity between steering lock so lenoid connector M15 terminals 2, 3 and ground.
Is the inspection result normal?
YES >> Replace Intelligent Key unit. Refer to SEC-120,
"Removal and Installation".
NO >> Repair or replace harness between steering lock sole-
noid and Intelligent Key unit.
Connector Te r m i n a l s
Condition Signal (V)
(Reference value)
(+) (–)
M70 32 Ground Ignition
switch is
pushed
WIIA1205ESIIA1911J
1 - 2 : Continuity should exist.
32 - 3 : Continuity should exist.
ALKIA0661ZZ
2 - Ground : Continuity should not exist.
3 - Ground : Continuity should not exist.
ALKIA0662ZZ
Revision: April 20092010 QX56

DLK-106
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
INTELLIGENT KEY BATTERY AND FUNCTION
INTELLIGENT KEY BATTERY AND FUNCTION
DescriptionINFOID:0000000005146975
The following functions are available when having and carrying electronic ID.
• Door lock/unlock
• Back door open
Remote control entry function and panic alarm functi
on are available when operating the remote buttons.
Component Function CheckINFOID:0000000005146976
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 >> Intelligent Key is OK.
NO >> Refer to DLK-106, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005146977
1.CHECK INTELLIGENT KEY FUNCTION
Check keyfob function using Remote Keyless Entry Tester J-43241.
Does the test pass?
YES >> Intelligent Key is OK.
NO >> GO TO 2
2. CHECK INTELLIGENT KEY COMPONENTS
1. Release the lock knob at the back of the Intelligent Key and remove the mechanical key.
2. Insert a flat-blade screwdriver (A) wrapped with a cloth into the slit of the corner and twist it to separate the upper part from the
lower part.
CAUTION:
• Do not touch the circuit board or battery terminal.
• The keyfob is water-resistant. However, if it does get wet,
immediately wipe it dry.
3. Remove the Intelligent Key battery.
CAUTION:
• Keep dirt, grease, and other fo reign materials off the elec-
trode contact area.
4. Visually inspect keyfob internal components.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace malfunctioning parts.
3.CHECK INTELLIGENT KEY BATTERY
Monitor item Condition
RKE OPE COUN1 Check that the numerical value is changing while operating the Intelligent Key.
LEL946A
PIIB6221E
Revision: April 20092010 QX56