air condition INFINITI QX56 2011 Factory Service Manual
[x] Cancel search | Manufacturer: INFINITI, Model Year: 2011, Model line: QX56, Model: INFINITI QX56 2011Pages: 5598, PDF Size: 94.53 MB
Page 1652 of 5598
DLK-116
< DTC/CIRCUIT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
AUTOMATIC BACK DOOR CONTROL UNIT
AUTOMATIC BACK DOOR CONTROL UNIT : Diagnosis ProcedureINFOID:0000000006225920
1.CHECK FUSE, FUSIBLE LINK AND CIRCUIT BREAKER
Check that the following fuse, fusible link and circuit breaker are not fusing.
Is the fuse fusing?
YES >> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is blown.
NO >> GO TO 2.
2.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect automatic back door control module connector.
3. Check voltage between automatic back door control module harness connector and ground.
Is the measurement value normal?
YES >> GO TO 3.
NO >> Repair or replace harness.
3.CHECK GROUND CIRCUIT
Check continuity between automatic back door control module harness connector and ground.
Does continuity exist?
YES >> INSPECTION END
NO >> Repair or replace harness.
Fuse and fusible link No. Signal name
T (30A) Battery power supply
9 (10A)
4 (10A) Ignition power supply
(+)
(− ) Condition Vol tag e
(Approx.)
Automatic back door control module
Connector Terminal
B26 9
Ground Ignition switch ON
Battery voltage
10
—
28
Automatic back door control module
GroundContinuity
Connector Terminal
B26 34 Existed
Revision: 2010 May2011 QX56
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DOOR SWITCHDLK-119
< DTC/CIRCUIT DIAGNOSIS >
C
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F
G H
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L
M A
B
DLK
N
O P
Is the inspection result normal?
YES >> Replace BCM. Refer to BCS-81, "Removal and Installation".
NO >> Repair or replace harness.
3.CHECK DOOR SWITCH GROUND CIRCUIT
Check continuity between door switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace harness.
4.CHECK DOOR SWITCH
Refer to DLK-119, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace malfunctioning door switch.
5.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
>> INSPECTION END
Component InspectionINFOID:0000000006225923
1.CHECK DOOR SWITCH
1. Turn ignition switch OFF.
2. Disconnect malfunctioning door switch connector.
3. Check continuity between door switch terminals.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace malfunction door switch.
Door switch
GroundContinuity
Connector Terminal
Driver side B34
1 Not existed
Passenger side B220
Rear LH B71
Rear RH B221
Door switch
GroundContinuity
Connector Terminal
B34
3Existed
B220
B71
B221
Door switch Condition Continuity
Terminal
1 3 Door switch Pressed Not existed
Released Existed
Revision: 2010 May2011 QX56
Page 1656 of 5598
DLK-120
< DTC/CIRCUIT DIAGNOSIS >
BACK DOOR SWITCH
BACK DOOR SWITCH
Component Function CheckINFOID:0000000006225924
1.CHECK FUNCTION
1. Select “DOOR LOCK” of “BCM” using CONSULT-III.
2. Select “DOOR SW-BK” in “DATA MONITOR” mode.
3. Check that the function operates normall y according to the following conditions.
Is the inspection result normal?
YES >> Door switch is OK.
NO >> Refer to DLK-120, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006225925
1.CHECK BACK DOOR SWITCH INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect back door lock assembly connector.
3. Check signal between back door lock assembly harness connector and ground using oscilloscope.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK BACK DOOR SWITCH CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between back door lock as sembly harness connector and BCM harness connector.
3. Check continuity between back door lock assembly harness connector and ground.
Is the inspection result normal?
YES >> Replace BCM. Refer to BCS-81, "Removal and Installation".
NO >> Repair or replace harness.
Monitor item Condition Status
DOOR SW-BK Driver side door Open On
Closed Off
(+)
(–) Signal
(Reference value)
Back door lock assembly
Connector Terminal
D157 7 Ground 9.0 - 10.0 V
JPMIA0593GB
Back door lock assembly BCM Continuity
Connector Terminal Connector Terminal
D157 7 M69 43 Existed
Back door lock assembly GroundContinuity
Connector Terminal
D157 7 Not existed
Revision: 2010 May2011 QX56
Page 1657 of 5598
BACK DOOR SWITCHDLK-121
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
G H
I
J
L
M A
B
DLK
N
O P
3.CHECK BACK DOOR SWITCH GROUND CIRCUIT
Check continuity between back door lo ck assembly harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace harness.
4.CHECK BACK DOOR SWITCH
Refer to DLK-121, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace back door lock assembly.
5.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
>> INSPECTION END
Component InspectionINFOID:0000000006225926
1.CHECK BACK DOOR SWITCH
1. Turn ignition switch OFF.
2. Disconnect back door lock assembly connector.
3. Check continuity between back door lock assembly terminals.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace back door lock assembly.
Back door lock assembly
GroundContinuity
Connector Terminal
D157 8 Existed
Back door lock assembly Condition Continuity
Terminal
7 8 Door switch Pressed Not existed
Released Existed
Revision: 2010 May2011 QX56
Page 1659 of 5598
DOOR LOCK ACTUATORDLK-123
< DTC/CIRCUIT DIAGNOSIS >
C
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F
G H
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M A
B
DLK
N
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DOOR LOCK ACTUATOR
DRIVER SIDE
DRIVER SIDE : Comp onent Function CheckINFOID:0000000006225931
1.CHECK FUNCTION
1. Select “DOOR LOCK” of “BCM” using CONSULT-III.
2. Select “DOOR LOCK” in “ACTIVE TEST” mode.
3. Touch “ALL LOCK” or “ALL UNLK” to check that it works normally.
Is the inspection result normal?
YES >> Door lock actuator is OK.
NO >> Refer to DLK-123, "
DRIVER SIDE : Diagnosis Procedure".
DRIVER SIDE : Diag nosis ProcedureINFOID:0000000006225932
1.CHECK DOOR LOCK ACTUATOR INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect front door lock assembly (driver side) connector.
3. Check voltage between front door lock assembly (driver side) harness connector and ground.
Is the inspection result normal?
YES >> Replace front door lock assembly (driver side).
NO >> GO TO 2.
2.CHECK DOOR LOCK ACTUATOR CIRCUIT
1. Disconnect BCM, all door lock actuator s and fuel lid lock actuator connector.
2. Check continuity between BCM harness connector and front door lock assembly (driver side) harness
connector.
3. Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harness.
3.CHECK BCM OUTPUT SIGNAL
1. Connect BCM connector.
2. Check voltage between BCM harness connector and ground.
(+)
(–) Condition Vo l ta g e
(Approx.)
Front door lock assembly
(driver side)
Connector Terminal
D9 1
Ground Door lock and unlock switch Lock
12 V
2 Unlock
BCM Front door lock assembly (driver side) Continuity
Connector Terminal Connector Terminal
M70 65
D9 1
Existed
66 2
BCM GroundContinuity
Connector Terminal
M70 65
Not existed
66
Revision: 2010 May2011 QX56
Page 1661 of 5598
DOOR LOCK ACTUATORDLK-125
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
G H
I
J
L
M A
B
DLK
N
O P
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harness.
3.CHECK BCM OUTPUT SIGNAL
1. Connect BCM connector.
2. Check voltage between BCM harness connector and ground.
Is the inspection result normal?
YES >> Check for internal short of each door lo ck actuator and fuel lid lock actuator.
NO >> Replace BCM. Refer to BCS-81, "
Removal and Installation".
REAR LH
REAR LH : Component Function CheckINFOID:0000000006225935
1.CHECK FUNCTION
1. Select “DOOR LOCK” of “BCM” using CONSULT-III.
2. Select “DOOR LOCK” in “ACTIVE TEST” mode.
3. Touch “ALL LOCK” or “ALL UNLK” to check that it works normally.
Is the inspection result normal?
YES >> Door lock actuator is OK.
NO >> Refer to DLK-125, "
REAR LH : Diagnosis Procedure".
REAR LH : Diagnosis ProcedureINFOID:0000000006225936
1.CHECK DOOR LOCK ACTUATOR INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect rear door lock assembly LH connector.
3. Check voltage between rear door lock assembly LH harness connector and ground.
Is the inspection result normal?
YES >> Replace rear door lock assembly LH.
NO >> GO TO 2.
2.CHECK DOOR LOCK ACTUATOR CIRCUIT
1. Disconnect BCM, all door lock actuator s and fuel lid lock actuator connector.
2. Check continuity between BCM harness connector and rear door lock assembly LH harness connector.
BCM
GroundContinuity
Connector Terminal
M70 59
Not existed
65
(+)
(–) Condition Vo l ta g e
(Approx.)
BCM
Connector Terminal
M70 59
Ground Door lock and unlock switch Unlock
12 V
65 Lock
(+)
(–) Condition Vo l ta g e
(Approx.)
Rear door lock assembly LH
Connector Terminal
D65 1
Ground Door lock and unlock switch Lock
12 V
2 Unlock
Revision: 2010 May2011 QX56
Page 1662 of 5598
DLK-126
< DTC/CIRCUIT DIAGNOSIS >
DOOR LOCK ACTUATOR
3. Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harness.
3.CHECK BCM OUTPUT SIGNAL
1. Connect BCM connector.
2. Check voltage between BCM harness connector and ground.
Is the inspection result normal?
YES >> Check for internal short of each door lock actuator and fuel lid lock actuator.
NO >> Replace BCM. Refer to BCS-81, "
Removal and Installation".
REAR RH
REAR RH : Component Function CheckINFOID:0000000006225937
1.CHECK FUNCTION
1. Select “DOOR LOCK” of “BCM” using CONSULT-III.
2. Select “DOOR LOCK” in “ACTIVE TEST” mode.
3. Touch “ALL LOCK” or “ALL UNLK” to check that it works normally.
Is the inspection result normal?
YES >> Door lock actuator is OK.
NO >> Refer to DLK-126, "
REAR RH : Diagnosis Procedure".
REAR RH : Diagnosis ProcedureINFOID:0000000006225938
1.CHECK DOOR LOCK ACTUATOR INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect rear door lock assembly RH connector.
3. Check voltage between rear door lock assembly RH harness connector and ground.
Is the inspection result normal?
BCM Rear door lock assembly LH Continuity
Connector Terminal Connector Terminal
M69 55 D652
Existed
M70 65 1
BCM GroundContinuity
Connector Terminal
M69 55 Not existed
M70 65
(+)
(–) Condition Vo l ta g e
(Approx.)
BCM
Connector Terminal M69 55 Ground Door lock and unlock switch Unlock
12 V
M70 65 Lock
(+)
(–) Condition Vol tag e
(Approx.)
Rear door lock assembly RH
Connector Terminal
D45 1
Ground Door lock and unlock switch Unlock
12 V
2Lock
Revision: 2010 May2011 QX56
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DOOR LOCK ACTUATORDLK-127
< DTC/CIRCUIT DIAGNOSIS >
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F
G H
I
J
L
M A
B
DLK
N
O P
YES >> Replace rear door lock assembly RH.
NO >> GO TO 2.
2.CHECK DOOR LOCK ACTUATOR CIRCUIT
1. Disconnect BCM, all door lock actuator s and fuel lid lock actuator connector.
2. Check continuity between BCM harness connector and rear door lock assembly RH harness connector.
3. Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harness.
3.CHECK BCM OUTPUT SIGNAL
1. Connect BCM connector.
2. Check voltage between BCM harness connector and ground.
Is the inspection result normal?
YES >> Check for internal short of each door lo ck actuator and fuel lid lock actuator.
NO >> Replace BCM. Refer to BCS-81, "
Removal and Installation".
BCM Rear door lock assembly RH
Continuity
Connector Terminal Connector Terminal
M69 55 D451
Existed
M70 65 2
BCM GroundContinuity
Connector Terminal
M69 55 Not existed
M70 65
(+)
(–) Condition Vo l ta g e
(Approx.)
BCM
Connector Terminal M69 55 Ground Door lock and unlock switch Unlock
12 V
M70 65 Lock
Revision: 2010 May2011 QX56
Page 1664 of 5598
DLK-128
< DTC/CIRCUIT DIAGNOSIS >
FUEL LID LOCK ACTUATOR
FUEL LID LOCK ACTUATOR
Component Function CheckINFOID:0000000006225939
1.CHECK FUNCTION
1. Select “DOOR LOCK” of “BCM” using CONSULT-III.
2. Select “DOOR LOCK” in “ACTIVE TEST” mode.
3. Touch “ALL LOCK” or “ALL UNLK” to check that it works normally.
Is the inspection result normal?
YES >> Fuel lid lock actuator is OK.
NO >> Refer to DLK-128, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006225940
1.CHECK FUEL LID LOCK ACTUATOR INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect fuel lid lock actuator connector.
3. Check voltage between fuel lid lock actuator harness connector and ground.
Is the inspection result normal?
YES >> Replace fuel lid lock actuator.
NO >> GO TO 2.
2.CHECK FUEL LID LOCK ACTUATOR CIRCUIT
1. Disconnect BCM, all door lock actuators connector.
2. Check continuity between BCM harness connector and fuel lid lock actuator harness connector.
3. Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harness.
3.CHECK BCM OUTPUT SIGNAL
1. Connect BCM connector.
2. Check voltage between BCM harness connector and ground.
(+)
(–) Condition Voltag e
(Approx.)
Fuel lid lock actuator
Connector Terminal
B19 1
Ground Door lock and unlock
switch Unlock
12 V
2Lock
BCM Fuel lid lock actuator Continuity
Connector Terminal Connector Terminal
M70 65
B19 2
Existed
66 1
BCM GroundContinuity
Connector Terminal
M70 65
Not existed
66
Revision: 2010 May2011 QX56
Page 1667 of 5598
UNLOCK SENSORDLK-131
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
G H
I
J
L
M A
B
DLK
N
O P
NO >> Repair or replace harness.
3.CHECK UNLOCK SENSOR GROUND CIRCUIT
Check continuity between front door lock assembly (driver side) harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace harness.
4.CHECK UNLOCK SENSOR
Refer to DLK-131, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace front door lock assembly (driver side).
5.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
>> INSPECTION END
Component InspectionINFOID:0000000006225943
1.CHECK UNLOCK SENSOR
1. Turn ignition switch OFF.
2. Disconnect front door lock assembly (driver side) connector.
3. Check continuity between front door lock assembly (driver side) terminals.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace front door lock assembly (driver side).
Front door lock assembly (driver side)
GroundContinuity
Connector Terminal
D9 4 Existed
Front door lock assembly (driver side) Condition Continuity
Te r m i n a l
3 4 Driver side door Unlock Existed
Lock Not existed
Revision: 2010 May2011 QX56