2008 INFINITI QX56 turn signal
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![INFINITI QX56 2008 Factory Service Manual POWER LIFTGATE SWITCH FUNCTIONDLK-121
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POWER LIFTGATE SWITCH FUNCTION
Diagnosis ProcedureINFOID:0000000001539034](/manual-img/42/57030/w960_57030-913.png "INFINITI QX56 2008 Factory Service Manual POWER LIFTGATE SWITCH FUNCTIONDLK-121
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POWER LIFTGATE SWITCH FUNCTION
Diagnosis ProcedureINFOID:0000000001539034")
POWER LIFTGATE SWITCH FUNCTIONDLK-121
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POWER LIFTGATE SWITCH FUNCTION
Diagnosis ProcedureINFOID:0000000001539034
1.POWER LIFTGATE SWITCH FUNCTION INSPECTION
Check power liftgate switch using switch operation.
Did the back door respond correctly?
YES >> Power liftgate switch is OK.
NO >> GO TO 2
2.POWER LIFTGATE SWITCH SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While operating the power liftgate switch, check voltage between back door control unit connector B55 terminal 23 and
ground.
Is the inspection result normal?
YES >> Switch is OK.
NO >> GO TO 3
3.POWER LIFTGATE SWITCH CIRCUIT INSPECTION
1. Disconnect back door control unit and power liftgate switch connectors.
2. Check continuity between back door control unit connector (A) B55 terminal 23 and power liftgate switch connector (B) M92 ter-
minal 1.
3. Check continuity between back door control unit connector (A) B55 terminal 23 and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair the harness between the power liftgate switch and the back door control unit.
4.POWER LIFTGATE SWITCH GROUND INSPECTION
Check continuity between power liftgate switch connector terminal 2
and ground.
Is the inspection result normal?
YES >> GO TO 5
NO >> Repair the harness between the power liftgate switch and ground.
5.POWER LIFTGATE SWITCH POWER SUPPLY CIRCUIT INSPECTION
1. Reconnect back door control unit.
2. Ensure liftgate is closed.
Te r m i n a l Measuring condition Voltage (V)
(Approx.)
(+) (-)
23 GroundPower liftgate
switch ON
0
OFF Battery voltage
LIIA0802E
23 - 1 : Continuity should exist.
23 - Ground : Continuity should not exist.
ALKIA0670ZZ
2 - Ground : Continuity should exist.
LIIA1065E
Revision: March 2010 2008 QX56
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![INFINITI QX56 2008 Factory Service Manual GLASS HATCH AJAR SWITCHDLK-125
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GLASS HATCH AJAR SWITCH
Diagnosis ProcedureINFOID:0000000001539035
1.CHECK GLASS](/manual-img/42/57030/w960_57030-917.png "INFINITI QX56 2008 Factory Service Manual GLASS HATCH AJAR SWITCHDLK-125
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GLASS HATCH AJAR SWITCH
Diagnosis ProcedureINFOID:0000000001539035
1.CHECK GLASS")
GLASS HATCH AJAR SWITCHDLK-125
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GLASS HATCH AJAR SWITCH
Diagnosis ProcedureINFOID:0000000001539035
1.CHECK GLASS HATCH AJAR SWITCH INPUT SIGNALWith CONSULT-III
Check glass hatch ajar switch ("TRNK OPN MNTR") in DATA MONITOR mode with CONSULT–III.
• When glass hatch is open:
• When glass hatch is closed:
Without CONSULT-III
Check voltage between BCM connector M19 terminal 42 and ground.
Is the inspection result normal?
YES >> System is OK.
NO >> GO TO 2
2.CHECK GLASS HATCH AJAR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect glass hatch ajar switch, BCM and back door control unit.
3. Check continuity between BCM connector (A) M19 te rminal 42 and glass hatch ajar switch connector (C)
D707 terminal 1.
4. Check continuity between back door control unit connector B55
(B) terminal 17 and glass hatch ajar switch connector (C) D707
terminal 1.
5. Check continuity between glass hatch ajar switch connector (C) D707 terminal 1 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3.CHECK GLASS HATCH AJAR SWITCH
1. Disconnect glass hatch ajar switch connector.
2. Check continuity between glass hatch ajar switch connector terminal 1 and ground. TRNK OPN MNTR : ON
TRNK OPN MNTR : OFF
Connector Item
Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (–)
M19 BCM 42 Ground Open
↓
Closed 0
↓
Battery voltage
LIIA1149E
42 - 1 : Continuity should exist.
17 - 1 : Continuity should exist.
1 - Ground : Continuity should not exist.
ALKIA0667ZZ
Revision: March 2010 2008 QX56
Page 920 of 4083
![INFINITI QX56 2008 Factory Service Manual BACK DOOR CLOSE (CLOSE) SWITCH SYSTEM
DLK-127
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BACK DOOR CLOSE (C LOSE) SWITCH SYSTEM
Diagnosis ProcedureINFOID:0](/manual-img/42/57030/w960_57030-919.png "INFINITI QX56 2008 Factory Service Manual BACK DOOR CLOSE (CLOSE) SWITCH SYSTEM
DLK-127
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BACK DOOR CLOSE (C LOSE) SWITCH SYSTEM
Diagnosis ProcedureINFOID:0")
BACK DOOR CLOSE (CLOSE) SWITCH SYSTEM
DLK-127
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BACK DOOR CLOSE (C LOSE) SWITCH SYSTEM
Diagnosis ProcedureINFOID:0000000001539036
1.BACK DOOR CLOSE SWITCH FUNCTION INSPECTION
Check back door close (close) s witch using switch operation.
Is the inspection result normal?
YES >> Back door close switch is OK.
NO >> GO TO 2
2.BACK DOOR CLOSE SWITCH SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While operating the back door close switch, check voltage between back door control unit connector B55 terminal 8 and
ground.
Is the inspection result normal?
YES >> Switch is OK.
NO >> GO TO 3
3.BACK DOOR CLOSE SWITCH CIRCUIT INSPECTION
1. Disconnect back door close switch and back door control unit connector.
2. Check continuity between back door control unit connector (A) B55 terminal 8 and back door close switch connector (B) B63
terminal 1.
3. Check continuity between back door control unit connector (A) B55 terminal 8 and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair the harness between the back door close switch and the back door control unit.
4.BACK DOOR CLOSE SWITCH GROUND INSPECTION
Check continuity between back door close switch connector B63 ter-
minal 3 and ground.
Is the inspection result normal?
YES >> Replace the back door close switch.
NO >> Repair the harness between the back door close switch and ground.
Te r m i n a l s Measuring condition Voltage (V)
(Approx.)
(+) (-)
8G ro u nd Back door
close switch ON
0
OFF Battery voltage
LIIA0805E
8 - 1 : Continuity should exist.
8 - Ground : Continuity should not exist.
ALKIA0669ZZ
3 - Ground : Continuity should exist.
WIIA0602E
Revision: March 2010 2008 QX56
Page 921 of 4083
![INFINITI QX56 2008 Factory Service Manual DLK-128
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BACK DOOR CLOSE (CANCEL) SWITCH SYSTEM
BACK DOOR CLOSE (CANCEL) SWITCH SYSTEM
Diagnosis ProcedureINFOID:0000000001539037
1.BACK DOOR CLOSE](/manual-img/42/57030/w960_57030-920.png "INFINITI QX56 2008 Factory Service Manual DLK-128
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BACK DOOR CLOSE (CANCEL) SWITCH SYSTEM
BACK DOOR CLOSE (CANCEL) SWITCH SYSTEM
Diagnosis ProcedureINFOID:0000000001539037
1.BACK DOOR CLOSE")
DLK-128
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BACK DOOR CLOSE (CANCEL) SWITCH SYSTEM
BACK DOOR CLOSE (CANCEL) SWITCH SYSTEM
Diagnosis ProcedureINFOID:0000000001539037
1.BACK DOOR CLOSE SWITCH FUNCTION INSPECTION
Check back door close (cancel) switch using switch operation.
Is the inspection result normal?
YES >> Back door close switch is OK.
NO >> GO TO 2
2.BACK DOOR CLOSE (CANCEL) SWITCH SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While operating the back door close (cancel) switch, check volt- age between back door control unit connector B55 terminal 13
and ground.
Is the inspection result normal?
YES >> Switch is OK.
NO >> GO TO 3
3.BACK DOOR CLOSE (CANCEL) SWITCH CIRCUIT INSPECTION
1. Disconnect back door close switch and back door control unit connector.
2. Check continuity between back door control unit connector (A) B55 terminal 13 and back door close switch connector (B) B63
terminal 5.
3. Check continuity between back door control unit connector (A) B55 terminal 13 and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair the harness between the back door close switch and the back door control unit.
4.BACK DOOR CLOSE SWITCH GROUND INSPECTION
Check continuity between back door close switch connector B63 ter-
minal 3 and ground.
Is the inspection result normal?
YES >> Replace the back door close switch.
NO >> Repair the harness between the back door close switch and ground.
Te r m i n a l s Measuring condition Voltage (V)
(Approx.)
(+) (-)
13 Ground Back door
close switch ON
0
OFF 5
LIIA1068E
13 - 5 : Continuity should exist.
13 - Ground : Continuity should not exist.
ALKIA0671ZZ
3 - Ground : Continuity should exist.
WIIA0602E
Revision: March 2010 2008 QX56
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![INFINITI QX56 2008 Factory Service Manual PINCH STRIP SYSTEMDLK-129
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PINCH STRIP SYSTEM
Diagnosis ProcedureINFOID:0000000001539038
1.PINCH STRIP SIGNAL INS](/manual-img/42/57030/w960_57030-921.png "INFINITI QX56 2008 Factory Service Manual PINCH STRIP SYSTEMDLK-129
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PINCH STRIP SYSTEM
Diagnosis ProcedureINFOID:0000000001539038
1.PINCH STRIP SIGNAL INS")
PINCH STRIP SYSTEMDLK-129
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PINCH STRIP SYSTEM
Diagnosis ProcedureINFOID:0000000001539038
1.PINCH STRIP SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While operating the pinch strip, check voltage between back door control unit connector B55 terminals 19, 20 and ground.
Is the inspection result normal?
YES >> Switch is OK.
NO >> GO TO 2
2.PINCH STRIP CIRCUIT INSPECTION
1. Disconnect pinch strip and ba ck door control unit connector.
2. Check continuity between back door control unit connector (A) B55 terminals 5, 19 (RH) or 5, 20 (LH) and pinch strip connector
(B) D715 (RH), D517 (LH) terminals 1, 2.
3. Check continuity between pinch strip connector (B) D715 (RH), D517 (LH) terminals 1, 2 and ground.
Is the inspection result normal?
YES >> Replace the pinch strip.
NO >> Repair the harness between the pinc h strip and the back door control unit.
Te r m i n a l s
Measuring condition Voltage (V)
(Approx.)
(+) (-)
19 Ground Pinch strip RH operation 0
Other 4
20 Ground Pinch strip LH operation 0
Other 4
LIIA0811E
RH: 1 - 19 : Continuity should exist.
LH: 1 - 20 : Continuity should exist.
RH and LH 2 - 5 : Continuity should exist.
1 - Ground : Continuity should not exist.
2 - Ground : Continuity should not exist.
ALKIA0672ZZ
Revision: March 2010 2008 QX56
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![INFINITI QX56 2008 Factory Service Manual HALF-LATCH SWITCH SYSTEMDLK-131
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HALF-LATCH SWITCH SYSTEM
Diagnosis ProcedureINFOID:0000000001539040
1.HALF-LATCH](/manual-img/42/57030/w960_57030-923.png "INFINITI QX56 2008 Factory Service Manual HALF-LATCH SWITCH SYSTEMDLK-131
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HALF-LATCH SWITCH SYSTEM
Diagnosis ProcedureINFOID:0000000001539040
1.HALF-LATCH")
HALF-LATCH SWITCH SYSTEMDLK-131
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HALF-LATCH SWITCH SYSTEM
Diagnosis ProcedureINFOID:0000000001539040
1.HALF-LATCH SWITCH SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While fully opening and closing the back door, check voltage between back door control unit connector B55 terminal 22 and
ground.
Is the inspection result normal?
YES >> Half-latch switch is OK.
NO >> GO TO 2
2.HALF-LATCH SWITCH CIRCUIT INSPECTION
1. Disconnect back door latch switch and back control unit connector.
2. Check continuity between back door control unit connector (A) B55 terminal 22 and back door latch (half-latch switch) connec-
tor (B) D705 terminal 6.
3. Check continuity between back control unit connector (A) B55 terminal 22 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair the harness between the back door latch (half-latch switch) and the back door control unit.
3.HALF-LATCH SWITCH GROUND INSPECTION
Check continuity between back door latch (half-latch switch) connec-
tor D705 terminal 8 and ground.
Is the inspection result normal?
YES >> Replace the back door latch.
NO >> Repair the harness between the back door latch (half- latch switch) and ground.
22 - Ground
LIIA0826EPIIA2169E
22 - 6 : Continuity should exist.
22 - Ground : Continuity should not exist.
ALKIA0675ZZ
8 - Ground : Continuity should exist.
LIIA0828E
Revision: March 2010 2008 QX56
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![INFINITI QX56 2008 Factory Service Manual DLK-132
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BACK DOOR OPEN SWITCH SYSTEM
BACK DOOR OPEN SWITCH SYSTEM
Diagnosis ProcedureINFOID:0000000001539041
1.OPEN SWITCH SIGNAL INSPECTION
1. Tur](/manual-img/42/57030/w960_57030-924.png "INFINITI QX56 2008 Factory Service Manual DLK-132
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BACK DOOR OPEN SWITCH SYSTEM
BACK DOOR OPEN SWITCH SYSTEM
Diagnosis ProcedureINFOID:0000000001539041
1.OPEN SWITCH SIGNAL INSPECTION
1. Tur")
DLK-132
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BACK DOOR OPEN SWITCH SYSTEM
BACK DOOR OPEN SWITCH SYSTEM
Diagnosis ProcedureINFOID:0000000001539041
1.OPEN SWITCH SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While fully closing and opening the back door, check voltage between back door control unit connector B55 terminal 15 and
ground.
Is the inspection result normal?
YES >> Open switch is OK.
NO >> GO TO 2
2.OPEN SWITCH CIRCUIT INSPECTION
1. Disconnect back door latch and back door control unit connector.
2. Check continuity between back door control unit connector (A) B55 terminal 15 and back door latch (open switch) connector (B)
D705 terminal 4.
3. Check continuity between back door control unit connector (A) B55 terminal 15 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair the harness between the back door la tch (open switch) and the back door control unit.
3.OPEN SWITCH GROUND INSPECTION
Check continuity between back door latch (open switch) connector
D705 terminal 8 and ground.
Is the inspection result normal?
YES >> Replace the back door latch.
NO >> Repair the harness between the back door latch (open switch) and ground.
15 - Ground
LIIA0829EWIIA1047E
15 - 4 : Continuity should exist.
15 - Ground : Continuity should not exist.
ALKIA0676ZZ
8 - Ground : Continuity should exist.
LIIA0828E
Revision: March 2010 2008 QX56
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![INFINITI QX56 2008 Factory Service Manual BACK DOOR CLOSE SWITCH SYSTEMDLK-133
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BACK DOOR CLOSE SWITCH SYSTEM
Diagnosis ProcedureINFOID:0000000001539042
1.](/manual-img/42/57030/w960_57030-925.png "INFINITI QX56 2008 Factory Service Manual BACK DOOR CLOSE SWITCH SYSTEMDLK-133
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BACK DOOR CLOSE SWITCH SYSTEM
Diagnosis ProcedureINFOID:0000000001539042
1.")
BACK DOOR CLOSE SWITCH SYSTEMDLK-133
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BACK DOOR CLOSE SWITCH SYSTEM
Diagnosis ProcedureINFOID:0000000001539042
1.CLOSE SWITCH SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While fully opening and closing the back door, check voltage between back door control unit connector B55 terminal 14 and-
ground.
Is the inspection result normal?
YES >> Close switch is OK.
NO >> GO TO 2
2.CLOSE SWITCH CIRCUIT INSPECTION
1. Disconnect back door latch and back door control unit connector.
2. Check continuity between back door control unit connector (A) B55 terminal 14 and back door latch (close switch) connector
(B) D705 terminal 5.
3. Check continuity between back door control unit connector (A) B55 terminal 14 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair the harness between the back door latc h (close switch) and the back door control unit.
3.CLOSE SWITCH GROUND INSPECTION
Check continuity between back door latch (close switch) connector
D705 terminal 8 and ground.
Is the inspection result normal?
YES >> Replace the back door latch.
NO >> Repair the harness between the back door latch (close switch) and ground.
14 - Ground
LIIA0831EWIIA1047E
14 - 5 : Continuity should exist.
14 - Ground : Continuity should not exist.
ALKIA0677ZZ
8 - Ground : Continuity should exist.
LIIA0828E
Revision: March 2010 2008 QX56