air condition INFINITI QX56 2008 Factory Service Manual

DOOR LOCK ACTUATORDLK-85
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
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L
M A
B
DLK
N
O P
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-55, "Removal and Installation".
NO >> Repair or replace harness or passenger select unlock relay.
REAR RH
REAR RH : DescriptionINFOID:0000000001538990
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: March 2010 2008 QX56

DLK-86
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DOOR LOCK ACTUATOR
REAR RH : Component Function Check
INFOID:0000000001538991
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, "
REAR RH : Diagnosis Procedure".
REAR RH : Diagnosis ProcedureINFOID:0000000001538992
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: March 2010 2008 QX56

DLK-88
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
GLASS HATCH LOCK ACTUATOR
GLASS HATCH LOCK ACTUATOR
Diagnosis ProcedureINFOID:0000000004333520
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-55, "
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-237,
"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: March 2010 2008 QX56

DLK-90
< 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: March 2010 2008 QX56

DLK-94
< 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 SEC-116, "
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: March 2010
2008 QX56

DLK-96
< 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-13, "
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-116,
"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: March 2010 2008 QX56

A/T SHIFT SELECTOR (PARK POSITION SWITCH)DLK-97
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
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G H
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M A
B
DLK
N
O P
A/T SHIFT SELECTOR (PARK POSITION SWITCH)
Diagnosis ProcedureINFOID:0000000001539005
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-116,
"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
1. Disconnect Intelligent Key unit connector.
Connector Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M70 39 Ground A/T shift 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) 56A/T shift selector lever is in "P"
position
Ye s
Other than above No
ALKIA0664ZZ
Revision: March 2010 2008 QX56

KEY SWITCH (INTELLIGENT KEY UNIT INPUT)
DLK-109
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
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M A
B
DLK
N
O P
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
Revision: March 2010 2008 QX56

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
Revision: March 2010 2008 QX56

KEY SWITCH (BCM INPUT)DLK-111
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
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G H
I
J
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M A
B
DLK
N
O P
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