2008 INFINITI QX56 door lock

DOOR LOCK FUNCTION SYMPTOMSDLK-201
< SYMPTOM DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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DOOR LOCK FUNCTION SYMPTOMS
DOOR LOCK AND UNLOCK SWITCH
DOOR LOCK AND UNLOCK SWITCH : Symptom TableINFOID:0000000001539066
DOOR LOCK/UNLOCK FUNCTION MALFUNCTION
NOTE:
• Before performing the diagnosis in the follo wing table, check “WORK FLOW”. Refer to DLK-6, "
Work Flow".
• Check that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and
check each symptom.
• If the following symptoms are detec ted, check systems shown in the “Diagnosis/service procedure” column
in this order.
Conditions of Vehicle (Operating Conditions)
• “LOCK/UNLOCK BY I-KEY” is ON when setting on CONSULT-III.
• Ignition switch is not depressed.
• All doors are closed.
Symptom Diagnosis/service procedureReference page
Power door lock does not operate with door lock
and unlock switch. 1. Check BCM Power supply and ground circuit.
BCS-32
2. Check door lock and unlock switch. DLK-70
3. Check door lock actuator (driver side)DLK-82
4. Check Intermittent Incident. GI-38
Power door lock does not operate with door key
cylinder operation.
(Power door lock operate properly with door lock
and unlock switch.)1. Check key cylinder switch.
DLK-75
2. Replace power window main switch.PWC-115
Specific door lock actuator does not operate.1a. Check driver side door lock actuator.
DLK-82
1b. Check passenger side door lock actuator.DLK-83
1c. Check rear LH side door lock actuator.DLK-84
1d. Check rear RH side door lock actuator.DLK-86
1e. Check back door lock operation (refer to back door).DLK-204
1f. Check glass hatch lock actuator. DLK-88
2. Check Intermittent Incident. GI-38
Door lock/unlock do not operate by request switch.1. Door switch check.
DLK-672. Ignition knob switch check.DLK-112
3. Replace Intelligent Key unit.SEC-116
Door lock/unlock does not operate by request
switch (LH side).1. Front door request switch LH check.
DLK-792. Front outside antenna LH check.DLK-93
3. Replace Intelligent Key unit.SEC-116
Door lock/unlock does not operate by request
switch (RH side).1. Front door request switch RH check.
DLK-792. Front outside antenna RH check.DLK-93
3. Replace Intelligent Key unit.SEC-116
Selective unlock function does not operate by front
door request switch LH (other door lock functions
operate properly).1.
Check “SELECT UNLOCK FUNCTION” setting in “WORK
SUPPORT”.
DLK-51
2. Replace Intelligent Key unit.
SEC-116
Revision: March 2010 2008 QX56

DLK-202
< SYMPTOM DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DOOR LOCK FUNCTION SYMPTOMS
INTELLIGENT KEY
INTELLIGENT KEY : Symptom TableINFOID:0000000001539067
REMOTE KEYLESS ENTRY FUNCTION MALFUNCTION
NOTE:
• Before performing the diagnosis in the following table, check “Trouble Diagnosis Procedure”. Refer to
DLK-
6, "Work Flow".
• Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and
check each symptom.
• If the following “symptoms” are detected, check syst ems shown in the “Diagnosis/service procedure” column
in this order.
Conditions of Vehicle (Operating Conditions)
• Ignition switch is not depressed.
• All doors are closed.
Auto lock function does not operate properly. 1.
Check “AUTO RELOCK TIMER” setting in “WORK SUP-
PORT”. DLK-48
2. Key switch check (BCM).
D L K - 111
3. Ignition knob switch check.DLK-112
4. Door switch check. DLK-67
5. Replace Intelligent Key unit.SEC-116
Key reminder function does not operate properly.1.
Check “ANTI KEY LOCK IN FUNCTION” setting in
“WORK SUPPORT”.
DLK-48
2. Door switch check.
DLK-67
3a. Inside key antenna 1 (rear of center console) check. DLK-56
3b. Inside key antenna 2 (luggage compartment) check.DLK-58
3c. Inside key antenna 3 (front of center console) check.DLK-60
3d. Inside key antenna 4 (overhead console area) check. DLK-62
4. Front door lock actuator LH (door unlock sensor) check.DLK-77
5. Intelligent Key battery and function inspection.DLK-102
6. Replace Intelligent Key unit.SEC-116
SymptomDiagnosis/service procedureReference page
Symptom Diagnosis/service procedureReference
page
All of the remote keyless entry functions do not
operate. 1. Intelligent Key battery and function inspection.
DLK-102
2. Remote Keyless Entry function check. DLK-99
3. Replace Intelligent Key unit.SEC-116
Selective unlock function does not operate by In-
telligent Key remote control button.1.
Check “SELECT UNLOCK FUNCTION” setting in “WORK SUP-
PORT”. DLK-48
2. Intelligent Key battery inspection.
DLK-102
3. Replace Intelligent Key unit.SEC-116
Auto lock function does not operate properly.1. Check “AUTO RELOCK TIMER” setting in “WORK SUPPORT”.
DLK-48
2. Key switch check (BCM).D L K - 111
3. Ignition knob switch check.DLK-112
4. Door switch check. DLK-67
5. Replace Intelligent Key unit.SEC-116
Revision: March 2010 2008 QX56

DOOR LOCK FUNCTION SYMPTOMSDLK-203
< SYMPTOM DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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Key reminder function does not operate properly. 1.
Check “ANTI KEY LOCK IN FUNCTION” setting in “WORK
SUPPORT”.
DLK-48
2. Door switch check.
DLK-67
3a. Inside key antenna 1 (rear of center console) check.DLK-56
3b. Inside key antenna 2 (luggage compartment) check.DLK-58
3c. Inside key antenna 3 (front of center console) check.DLK-60
3d. Inside key antenna 4 (overhead console area) check.DLK-62
4. Front door lock actuator LH (door unlock sensor) check.DLK-77
5. Intelligent Key battery inspection.DLK-102
6. Replace Intelligent Key unit.SEC-116
Panic alarm function does not operate properly.1. Check “PANIC ALARM DELAY” setting in “WORK SUPPORT”.
DLK-49
2. Theft warning operation check.DLK-206
3. Intelligent Key battery inspection.DLK-102
4. Key switch check (BCM). D L K - 111
5. Ignition knob switch check.DLK-112
6. Replace Intelligent Key unit.SEC-116
Back door open function does not operate prop-
erly.1. Back door diagnosis.
DLK-1192. Intelligent Key battery inspection.DLK-102
3. Replace Intelligent Key unit.SEC-116
Power window down function does not operate.1. Check “PW DOWN SET” setti
ng in “WORK SUPPORT”. DLK-492. Intelligent Key battery inspection. DLK-102
SymptomDiagnosis/service procedureReference
page
Revision: March 2010 2008 QX56

DLK-204
< SYMPTOM DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BACK DOOR OPENER FUNCTION
BACK DOOR OPENER FUNCTION
BACK DOOR OPENER SWITCH
BACK DOOR OPENER SWITCH : Symptom TableINFOID:0000000001539068
TRUNK OPEN FUNCTION MALFUNCTION
NOTE:
• Before performing the diagnosis in the following table, check “WORK FLOW”. Refer to
DLK-6, "
Work Flow".
• Check that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and
check each symptom.
• If the following symptoms” are detected, check systems shown in the “Diagnosis/service procedure” column in this order.
Conditions of Vehicle (Operating Conditions)
• Vehicle is in park.
BACK DOOR SWITCH
Symptom Suspect systemsRefer to
Automatic operations are not executed from the back door fully
closed or fully open position.
(Auto closure operates normally). Power liftgate switch system inspection
DLK-137
Park switch —
Power window serial link —
Pinch strip system inspection DLK-129
Automatic operations are not carried out together with open/close
operations.
(Manual operations are normal). Power liftgate switch system inspection
DLK-137Back door close switch system inspectionDLK-133
Auto back door power supply and ground cir-
cuit system inspection. DLK-65
The auto closure function does not operate.
(Stops at the halfway position for auto closing operations).
Pinch strip system inspection
DLK-129
During auto closing operations, if obstruction is detected, the door
does not operate in reverse. Back door motor assembly
DLK-236
During close or cinch operations, the door does not operate in re-
verse if the back door handle is operated. Handle switch system
DLK-136
When the keyfob is operated, the back door does not operate au-
tomatically. Remote keyless entry system inspection
DLK-99Power window serial link —
Pinch strip system inspection DLK-129
Auto closure does not operate. Half-latch switch system
DLK-131Cinch latch motor systemDLK-135
Handle switch systemDLK-136
The back door does not open.
(Closure motor rotation is not reversed). Open switch system
DLK-132
Handle switch systemDLK-136
Warning chime does not sound. Back door warning chime systemDLK-130
Auto closure operation works, but the back door is not fully closed Close switch system
DLK-133
Handle switch systemDLK-136
Cinch latch motor systemDLK-135
Back door latch assembly mechanism dam-
aged or worn.DLK-236
Auto open operation releases lock, but does not fully open back
door. Glass hatch ajar switch check
DLK-125
Glass hatch lock actuator does not operate
(Right front door must be unlocked for normal operation) Glass hatch switch check
DLK-123Glass hatch lock actuator check DLK-88
Replace BCMBCS-55
Revision: March 2010 2008 QX56

BACK DOOR OPENER FUNCTIONDLK-205
< SYMPTOM DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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BACK DOOR SWITCH : Symptom TableINFOID:0000000001539069
BACK DOOR OPEN FUNCTION MALFUNCTION
NOTE:
• Before performing the diagnosis in the follo wing table, check “WORK FLOW”. Refer to DLK-6, "
Work Flow".
• Check that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and check each symptom.
• If the following “symptoms” are detected, check syst ems shown in the “Diagnosis/service procedure” column
in this order.
Conditions of Vehicle (Operating Conditions)
• Vehicle is in park.
INTELLIGENT KEY
INTELLIGENT KEY : Symptom TableINFOID:0000000001539070
BACK DOOR OPEN FUNCTION MALFUNCTION
NOTE:
• Before performing the diagnosis in the follo wing table, check “WORK FLOW”. Refer to DLK-6, "
Work Flow".
• Check that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and check each symptom.
• If the following symptoms” are detected, check systems shown in the “Diagnosis/service procedure” column
in this order.
Conditions of Vehicle (Operating Conditions)
• Ignition switch is not depressed.
Symptom Diagnosis/service procedureReference page
Back door open function does not operate by
back door switch (doors unlocked). 1. Refer to diagnosis chart.
DLK-204
2. Check Intermittent Incident. GI-38
Back door open function does not operate by
back door switch only.
(doors locked but Intelligent Key present).1. Outside key antenna check.
DLK-932. Intelligent Key unit power back door input signal.DLK-136
3. Intelligent Key unit power back door output signal.DLK-137
4. Intelligent Key battery and function check.DLK-102
SymptomDiagnosis/service procedureReference page
Back door open function does not operate
by Intelligent Key. 1. Check Intelligent Key battery inspection.
DLK-102
2. Intelligent Key unit power and ground check. DLK-64
3. Check intermittent incident. GI-38
Revision: March 2010 2008 QX56

DLK-208
< SYMPTOM DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
WARNING FUNCTION SYMPTOMS
Door lock operation warning chime does
not operate.1. Check door switch.
DLK-67
2. Check ignition knob switch.DLK-112
3. Check Intelligent Key warning buzzer. DLK-91
4. Check inside key antennas (1, 2, 3, 4).Rear of center console
DLK-56Luggage compartmentDLK-58
Front of center consoleDLK-60
Overhead console areaDLK-62
5. Check Intermittent Incident. GI-38
SymptomDiagnosis/service procedure Reference
page
Revision: March 2010 2008 QX56

KEY REMINDER FUNCTION SYMPTOMSDLK-209
< SYMPTOM DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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KEY REMINDER FUNCTION SYMPTOMS
Symptom TableINFOID:0000000001539072
KEY REMINDER FUNCTION MALFUNCTION
NOTE:
• Before performing the diagnosis in the following table, check “Work flow”. Refer to DLK-6, "
Work Flow".
• If the following symptoms” are detected, check systems shown in the “Diagnosis/service procedure” column in this order.
Conditions of Vehicle (Operating Conditions)
• “LOCK/UNLOCK BY I-KEY” is ON when setting on CONSULT-III.
• “ANSWER BACK FUNCTION” is ON when setting on CONSULT-III.
• Ignition switch is in OFF position.
• All doors are closed.
• Ignition switch is not depressed.
Symptom Diagnosis/service procedureReference page
Key reminder function does not operate. 1.
Check “ANTI KEY LOCK IN FUNCTI”setting in “WORK SUP-
PORT”. DLK-51
2. Check door switch.
DLK-67
3. Check inside key antennas (1, 2, 3, 4)Rear of center console
DLK-56Luggage compartmentDLK-58
Front of center consoleDLK-60
Overhead console areaDLK-62
4. Check unlock sensor. DLK-77
5. Check Intelligent Key battery inspection.DLK-102
6. Check Intermittent Incident. GI-38
Revision: March 2010 2008 QX56

DLK-210
< SYMPTOM DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
HAZARD FUNCTION
HAZARD FUNCTION
Symptom TableINFOID:0000000001539073
HAZARD AND BUZZER REMINDER FUNCTION MALFUNCTION
NOTE:
• Before performing the diagnosis in the follo
wing table, check “Work flow”. Refer to DLK-6, "
Work Flow".
• If the following symptoms” are detected, check systems shown in the “Diagnosis/service procedure” column in this order.
Conditions of Vehicle (Operating Conditions)
• “LOCK/UNLOCK BY I-KEY” is ON when setting on CONSULT-III.
• “ANSWER BACK FUNCTION” is ON when setting on CONSULT-III.
• Ignition switch is in OFF position.
• All doors are closed.
• Ignition switch is not depressed.
Symptom Diagnosis/service procedureReference
page
Hazard reminder does not operate by request
switch.
(Buzzer reminder operate.) 1.
Check “HAZARD ANSWER BACK” setting in “WORK
SUPPORT”.
DLK-51
2. Check hazard function.
DLK-108
3. Check Intermittent incident. GI-38
Hazard reminder does not operate by Intelligent Key.
(Buzzer reminder operate.)1.
Check “HAZARD ANSWER BACK” setting in “WORK
SUPPORT”.
DLK-51
2. Check hazard function.
DLK-108
3. Check Intelligent Key battery inspection.DLK-102
Buzzer reminder does not operate by request
switch.
(Hazard reminder operate.)1.
Check “ANS BACK I-KEY LOCK” or “ANS BACK I-KEY
UNLOCK” setting in “WORK SUPPORT”. DLK-51
2. Check Intelligent Key warning buzzer.
DLK-91
3. Check Intermittent incident. GI-38
Revision: March 2010 2008 QX56