2011 INFINITI QX56 Back door
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DLK-90
< DTC/CIRCUIT DIAGNOSIS >
B2417 TOUCH SENSOR LH
B2417 TOUCH SENSOR LH
DTC LogicINFOID:0000000006225888
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self Diagnostic Result” mode of “AUTOMAT IC BACK DOOR CONTROL UNIT” using CONSULT-
III.
Is DTC detected?
YES >> Refer to DLK-90, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006225889
1.CHECK HALF LATCH SWITCH SIGNAL
1. Select “AUTOMATIC BACK DOOR CONTROL UNIT” using CONSULT-III.
2. Select “TOUCH SEN LH” in “DATA MONITOR” mode.
3. Check that the function operates normall y according to the following conditions.
Is the inspection result normal?
YES >> GO TO 6.
NO >> GO TO 2.
2.CHECK TOUCH SENSOR INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect touch sensor LH connector.
3. Check voltage between touch sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
3.CHECK TOUCH SENSOR LH CIRCUIT
1. Disconnect automatic back door control module.
2. Check continuity between automatic back door c ontrol module harness connector and touch sensor LH
harness connector.
DTC CONSULT-III display
description DTC detecting condition Possible cause
B2417 TOUCH SEN L
OPEN When the automatic back door control unit detects
the open circuit of the touch sensor LH. Touch sensor LH
Harness or connectors
(Touch sensor LH circuit is open)
Automatic back door control mod-
ule
Monitor item Condition Status
TOUCH SEN LH Touch sensor LH Other than below OFF
Detect obstruction ON
(+)
(–)Voltag e
(Approx.)
Touch sensor LH
Connector Terminal D107 1 Ground 6 V
Revision: 2010 May2011 QX56
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B2417 TOUCH SENSOR LHDLK-91
< DTC/CIRCUIT DIAGNOSIS >
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Is the inspection result normal?
YES >> Replace automatic back door control module. Refer to DLK-262, "Removal and Installation".
NO >> Repair or replace harness.
4.CHECK TOUCH SENSOR LH GROUND CIRCUIT
1. Disconnect automatic back door control module and touch sensor RH connectors.
2. Check continuity between automatic back door c ontrol module harness connector and touch sensor LH
harness connector.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace harness.
5.CHECK TOUCH SENSOR LH
Refer to DLK-91, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Replace touch sensor LH.
6.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
>> INSPECTION END
Component InspectionINFOID:0000000006225890
1.CHECK TOUCH SENSOR LH
1. Turn ignition switch OFF.
2. Disconnect touch sensor LH connector.
3. Check resistance between touch sensor LH terminals.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace touch sensor LH.
Automatic back door control module Touch sensor LH Continuity
Connector Terminal Connector Terminal
B26 14 D107 1 Existed
Automatic back door control module Touch sensor LH Continuity
Connector Terminal Connector Terminal
B26 15 D107 2 Existed
Touch sensor LH ConditionResistance
(Approx.)
Te r m i n a l
1 2 Touch sensor LH Detect obstruction 120
Ω or less
Other than above 1 k Ω ± 10%
Revision: 2010 May2011 QX56
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DLK-92
< DTC/CIRCUIT DIAGNOSIS >
B2419 OPEN SWITCH
B2419 OPEN SWITCH
DTC LogicINFOID:0000000006225891
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self Diagnostic Result” mode of “AUTOMAT IC BACK DOOR CONTROL UNIT” using CONSULT-
III.
Is DTC detected?
YES >> Refer to DLK-92, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006225892
1.CHECK OPEN SWITCH SIGNAL
1. Select “AUTOMATIC BACK DOOR CONTROL UNIT” using CONSULT-III.
2. Select “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 >> GO TO 6.
NO >> GO TO 2.
2.CHECK AUTOMATIC BACK DOOR CONTROL MODULE OUTPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect back door lock assembly connector.
3. Check voltage between back door lock assembly harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
DTC CONSULT-III display
description DTC detecting condition Possible cause
B2419 OPEN SW When the automatic back door control unit detects
any of the following conditions
The change of open switch cannot be detected
for 1 second or more after starting the closure
open output for the 3rd time in a row
The change of open switch cannot be detected for 0.5 second or more after starting the closure
close output for the 3rd time in a row
The condition that the open switch is in the ON position and the close switch is in the OFF posi-
tion is detected when starting the closure open/
close output for the 3rd time in a row Open switch
Harness or connectors
(Open switch circuit is open or
shorted)
Automatic back door control mod- ule
Monitor item Condition Status
OPEN SW Back door Fully closed/Half latch OFF
Open ON
(+)
(–)Voltag e
(Approx.)
Back door lock assembly
Connector Terminal D157 4 Ground Battery voltage
Revision: 2010 May2011 QX56
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B2419 OPEN SWITCHDLK-93
< DTC/CIRCUIT DIAGNOSIS >
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3.CHECK OPEN SWITCH CIRCUIT
1. Disconnect automatic back door control module connector.
2. Check continuity between automatic back door control module harness connector and back door lock
assembly 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.
4.CHECK OPEN SWITCH GROUND CIRCUIT
Check continuity between back door lo ck assembly harness connector and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace harness.
5.CHECK OPEN SWITCH
Refer to DLK-93, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Replace back door lock assembly.
6.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
>> INSPECTION END
Component InspectionINFOID:0000000006225893
COMPONENT INSPECTION
1.CHECK OPEN 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
Automatic back door control module Back door lock assembly Continuity
Connector Terminal Connector Terminal
B26 20 D157 4 Existed
Automatic back door control module GroundContinuity
Connector Terminal
B26 20 Not existed
Back door lock assembly GroundContinuity
Connector Terminal
D157 8 Existed
Back door lock assembly Condition Continuity
Te r m i n a l
4 8 Back door Open Existed
Fully closed/Half latch Not existed
Revision: 2010 May2011 QX56
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DLK-94
< DTC/CIRCUIT DIAGNOSIS >
B2419 OPEN SWITCH
NO >> Replace back door lock assembly.
Revision: 2010 May2011 QX56
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B2420 CLOSE SWITCHDLK-95
< DTC/CIRCUIT DIAGNOSIS >
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B2420 CLOSE SWITCH
DTC LogicINFOID:0000000006225894
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self Diagnostic Result” mode of “AUTOMAT IC BACK DOOR CONTROL UNIT” using CONSULT-
III.
Is DTC detected?
YES >> Refer to DLK-95, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006225895
1.CHECK CLOSE SWITCH SIGNAL
1. Select “AUTOMATIC BACK DOOR CONTROL UNIT” using CONSULT-III.
2. Select “CLOSE SW” in “DATA MONITOR” mode.
3. Check that the function operates normall y according to the following conditions.
Is the inspection result normal?
YES >> GO TO 6.
NO >> GO TO 2.
2.CHECK AUTOMATIC BACK DOOR CONTROL MODULE OUTPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect back door lock assembly connector.
3. Check voltage between back door lock assembly harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
3.CHECK CLOSE SWITCH CIRCUIT
1. Disconnect automatic back door control module connector.
2. Check continuity between automatic back door control module harness connector and back door lock
assembly harness connector.
DTC CONSULT-III display
description DTC detecting condition Possible cause
B2420 CLOSE SW When the automatic back door control unit detects
any of the following conditions
The change of close switch cannot be detected
for 3 second or more after starting the closure
close output for the 3rd time in a row Close switch
Harness or connectors
(Close switch circuit is open or
shorted)
Automatic back door control mod- ule
Monitor item Condition Status
CLOSE SW Back door Open/Half latch OFF
Fully closed ON
(+)
(–)Voltag e
(Approx.)
Back door lock assembly
Connector Terminal D157 5 Ground Battery voltage
Revision: 2010 May2011 QX56
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DLK-96
< DTC/CIRCUIT DIAGNOSIS >
B2420 CLOSE SWITCH
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.
4.CHECK CLOSE SWITCH GROUND CIRCUIT
Check continuity between back door lock assembly harness connector and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace harness.
5.CHECK CLOSE SWITCH
Refer to DLK-95, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Replace back door lock assembly.
6.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
>> INSPECTION END
Component InspectionINFOID:0000000006225896
COMPONENT INSPECTION
1.CHECK CLOSE SWITCH
1. Turn ignition switch OFF.
2. Disconnect back door lock assembly.
3. Check continuity between back door lock assembly terminals.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace back door lock assembly.
Automatic back door control module Back door lock assembly Continuity
Connector Terminal Connector Terminal
B26 19 D157 5 Existed
Automatic back door control module GroundContinuity
Connector Terminal
B26 19 Not existed
Back door lock assembly GroundContinuity
Connector Terminal
D157 8 Existed
Back door lock assembly Condition Continuity
Te r m i n a l
5 8 Back door Fully closed Existed
Open/Half latch Not existed
Revision: 2010 May2011 QX56
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B2421 CLUTCH OPERATION TIMEDLK-97
< DTC/CIRCUIT DIAGNOSIS >
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B2421 CLUTCH OPERATION TIME
DTC LogicINFOID:0000000006225897
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self Diagnostic Result” mode of “AUTOMAT IC BACK DOOR CONTROL UNIT” using CONSULT-
III.
Is DTC detected?
YES >> Refer to DLK-97, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006225898
1.CHECK AUTOMATIC BACK DOOR CONTROL MODULE POWER SUPPLY AND GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check automatic back door control module power supply and ground circuit. Refer to DLK-116, "
AUTOMATIC BACK DOOR CONTROL UNIT : Diagnosis Procedure".
Is the inspection result normal?
YES >> Replace automatic back door control module. Refer to DLK-262, "Removal and Installation".
NO >> Repair or replace the malfunctioning parts.
DTC CONSULT-III display
description DTC detecting condition Possible cause
B2421 CLUTCH TIME OUT When the automatic back door control unit detects
the power distribution to the clutch for 2 minutes or
more Automatic back door control mod-
ule
Battery voltage (low voltage)
Revision: 2010 May2011 QX56