2011 INFINITI QX56 Back door

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

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

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

BACK DOOR REQUEST SWITCHDLK-139
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
G H
I
J
L
M A
B
DLK
N
O P
BACK DOOR REQUEST SWITCH
Component Function CheckINFOID:0000000006225952
1.CHECK FUNCTION
1. Select “INTELLIGENT KEY” of “BCM” using CONSULT-III.
2. Select “REQ SW-BD/TR” in “DATA MONITOR” mode.
3. Check that the function operates normall y according to the following conditions.
Is the inspection result normal?
YES >> Back door request switch is OK.
NO >> Refer to DLK-139, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006225953
1.CHECK BACK DOOR REQUEST SWITCH INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect back door opener switch assembly connector.
3. Check voltage between back door opener switch assembly harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK BACK DOOR REQUEST SWITCH CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector and back door opener switch assembly harness con-
nector.
3. Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES >> Replace BCM. Refer to BCS-81, "Removal and Installation".
NO >> Repair or replace harness.
3.CHECK BACK DOOR REQUEST SWITCH GROUND CIRCUIT
Check continuity between back door opener s witch assembly harness connector and ground.
Monitor item Condition Status
REQ SW-BD/TR Back door request switch Pressed On
Released Off
(+)
(–)Vol tag e
(Approx.)
Back door opener switch assembly
Connector Terminal D154 4 Ground 12 V
BCM Back door opener switch assembly Continuity
Connector Terminal Connector Terminal
M69 51 D154 4 Existed
BCM GroundContinuity
Connector Terminal
M69 51 Not existed
Revision: 2010 May2011 QX56

DLK-140
< DTC/CIRCUIT DIAGNOSIS >
BACK DOOR REQUEST SWITCH
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace harness.
4.CHECK BACK DOOR REQUEST SWITCH
Refer to DLK-140, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace back door opener switch assembly.
5.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
>> INSPECTION END
Component InspectionINFOID:0000000006225954
1.CHECK BACK DOOR REQUEST SWITCH
1. Turn ignition switch OFF.
2. Disconnect back door opener switch assembly connector.
3. Check continuity between back door opener switch assembly terminals.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace back door opener switch assembly.
Back door opener switch assembly
GroundContinuity
Connector Terminal
D154 3 Existed
Back door opener switch assembly Condition Continuity
Te r m i n a l
3 4 Back door request switch Pressed Existed
Released Not existed
Revision: 2010 May2011 QX56

BACK DOOR OPENER SWITCHDLK-141
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
G H
I
J
L
M A
B
DLK
N
O P
BACK DOOR OPENER SWITCH
Component Function CheckINFOID:0000000006225955
1.CHECK FUNCTION
1. Select “TRUNK” of “BCM” using CONSULT-III.
2. Select “TR/BD OPEN SW” in “DATA MONITOR” mode.
3. Check that the function operates normall y according to the following conditions.
Is the inspection result normal?
YES >> Back door opener switch is OK.
NO >> Refer to DLK-141, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006225956
1.CHECK BACK DOOR OPEN INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect back door opener switch assembly connector.
3. Check signal between back door opener switch assembly harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK BACK DOOR OPENER SWITCH CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector and back door opener switch assembly harness con-
nector.
3. Check continuity between BCM 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
TR/BD OPEN SW Back door opener switch Pressed ON
Released OFF
(+)
(–)Signal
(Reference value)
Back door opener switch assembly
Connector Terminal
D154 1 Ground
JPMIA0012GB
BCM Back door opener switch assembly Continuity
Connector Terminal Connector Terminal
M68 30 D154 1 Existed
BCM GroundContinuity
Connector Terminal
M68 30 Not existed
Revision: 2010 May2011 QX56

DLK-142
< DTC/CIRCUIT DIAGNOSIS >
BACK DOOR OPENER SWITCH
3.CHECK BACK DOOR OPENER SWITCH GROUND CIRCUIT
Check continuity between back door opener switch assembly harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace harness.
4.CHECK BACK DOOR OPENER SWITCH
Refer to DLK-142, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace back door opener switch assembly.
5.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
>> INSPECTION END
Component InspectionINFOID:0000000006225957
1.CHECK BACK DOOR OPENER SWITCH
1. Turn ignition switch OFF.
2. Disconnect back door opener switch assembly connector.
3. Check continuity between back door opener switch assembly terminals.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace back door opener switch assembly.
Back door opener switch assembly
GroundContinuity
Connector Terminal
D154 2 Existed
Back door opener switch assembly Condition Continuity
Te r m i n a l
12 Back door opener
switchPressed Existed
Released Not existed
Revision: 2010 May2011 QX56

DLK-150
< DTC/CIRCUIT DIAGNOSIS >
AUTOMATIC BACK DOOR CLOSE SWITCH
AUTOMATIC BACK DOOR CLOSE SWITCH
Component Function CheckINFOID:0000000006225971
1.CHECK FUNCTION
1. Select “AUTOMATIC BACK DOOR CONTROL UNIT” using CONSULT-III.
2. Select “BK DOOR CL SW” in “DATA MONITOR” mode.
3. Check that the function operates normall y according to the following conditions.
Is the inspection result normal?
YES >> Automatic back door close switch is OK.
NO >> Refer to DLK-150, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006225972
1.CHECK AUTOMATIC BACK DOOR CLOSE SWITCH INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect automatic back door close switch connector.
3. Check voltage between automatic back door close switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK AUTOMATIC BACK DOOR CLOSE SWITCH CIRCUIT
1. Disconnect automatic back door control module connector.
2. Check continuity between automatic back door control module harness connector and automatic back
door close switch harness connector.
3. Check continuity between automatic back door control module harness connector and ground.
Is the inspection result normal?
YES >> Replace automatic back door control module. Refer to DLK-262, "Removal and Installation".
NO >> Repair or replace harness.
3.CHECK AUTOMATIC BACK DOOR CLOSE SWITCH GROUND CIRCUIT
Check continuity between automatic back door close switch harness connector and ground.
Monitor item Condition Status
BK DOOR CL SW Automatic back door close switch Pressed ON
Released OFF
(+)
(–)Vol tag e
(Approx.)
Automatic back door close switch
Connector Terminal D158 1 Ground Battery voltage
Automatic back door control module Automatic back door close switch Continuity
Connector Terminal Connector Terminal
B26 4 D158 1 Existed
Automatic back door control module GroundContinuity
Connector Terminal
B26 4 Not existed
Revision: 2010 May2011 QX56