key INFINITI QX56 2009 Factory Service Manual

DLK-202
< ECU DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BACK DOOR CONTROL UNIT
AAKIA0088GB
Revision: December 20092009 QX56

BACK DOOR CONTROL UNITDLK-203
< ECU DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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AAKIA0089GB
Revision: December 20092009 QX56

DLK-204
< ECU DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BACK DOOR CONTROL UNIT
AAKIA0090GB
Revision: December 20092009 QX56

BACK DOOR CONTROL UNITDLK-205
< ECU DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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Fail SafeINFOID:0000000003775832
Fail-safe operation
The automatic back door system operation will be interrupt ed if the back door control unit loses power, switch
input signals or communication with the BCM.
ABKIA0079GB
Revision: December 20092009 QX56

DLK-206
< SYMPTOM DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
INTELLIGENT KEY SYSTEM SYMPTOMS
SYMPTOM DIAGNOSIS
INTELLIGENT KEY SYSTEM SYMPTOMS
Symptom TableINFOID:0000000003775833
ALL FUNCTIONS OF INTELLIGENT KEY SYSTEM DO NOT OPERATE
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 syst ems shown in the “Diagnosis/service procedure” column
in this order.
Conditions of Vehicle (Operating Conditions)
• “ENGINE START BY I-KEY” and “LOCK/UNLOCK BY I-KEY” are ON when se tting on CONSULT-III.
• All doors are closed.
Symptom Diagnosis/service procedureReference page
All doors and ignition switch do not respond to
Intelligent Key command. 1. Check Intelligent Key function and battery inspection.
DLK-106
2. Check Intelligent Key unit power supply and ground circuit. DLK-68
3. Check remote keyless entry receiver.DLK-103
4. Check BCM power supply and ground circuit. DLK-68
5. Replace Intelligent Key unit.DLK-106
Revision: December 20092009 QX56

DOOR LOCK FUNCTION SYMPTOMSDLK-207
< 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:0000000003775834
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-74
3. Check door lock actuator (driver side)DLK-86
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-79
2. Replace power window main switch.PWC-117
Specific door lock actuator does not operate.1a. Check driver side door lock actuator.
DLK-86
1b. Check passenger side door lock actuator.DLK-87
1c. Check rear LH side door lock actuator.DLK-88
1d. Check rear RH side door lock actuator.DLK-90
1e. Check back door lock operation (refer to back door).DLK-210
1f. Check glass hatch lock actuator. DLK-92
2. Check Intermittent Incident. GI-38
Door lock/unlock do not operate by request switch.1. Door switch check.
DLK-712. Ignition knob switch check.DLK-116
3. Replace Intelligent Key unit.SEC-111
Door lock/unlock does not operate by request
switch (LH side).1. Front door request switch LH check.
DLK-832. Front outside antenna LH check.DLK-97
3. Replace Intelligent Key unit.SEC-111
Door lock/unlock does not operate by request
switch (RH side).1. Front door request switch RH check.
DLK-832. Front outside antenna RH check.DLK-97
3. Replace Intelligent Key unit.SEC-111
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-56
2. Replace Intelligent Key unit.
SEC-111
Revision: December 20092009 QX56

DLK-208
< SYMPTOM DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DOOR LOCK FUNCTION SYMPTOMS
INTELLIGENT KEY
INTELLIGENT KEY : Symptom TableINFOID:0000000003775835
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-52
2. Key switch check (BCM).
DLK-115
3. Ignition knob switch check.DLK-116
4. Door switch check. DLK-71
5. Replace Intelligent Key unit.SEC-111
Key reminder function does not operate properly.1.
Check “ANTI KEY LOCK IN FUNCTION” setting in
“WORK SUPPORT”.
DLK-52
2. Door switch check.
DLK-71
3a. Inside key antenna 1 (rear of center console) check. DLK-60
3b. Inside key antenna 2 (luggage compartment) check.DLK-62
3c. Inside key antenna 3 (front of center console) check.DLK-64
3d. Inside key antenna 4 (overhead console area) check. DLK-66
4. Front door lock actuator LH (door unlock sensor) check.DLK-81
5. Intelligent Key battery and function inspection.DLK-106
6. Replace Intelligent Key unit. SEC-111
Vehicle speed sensing auto LOCK operation does
not operate.1.
Ensure automatic door lock/unlock function (lock opera-
tion) is enabled. DLK-56
2. Check combination meter vehicle speed signal.
MWI-29
3. Check intermittent incident. GI-38
Ignition OFF interlock door UNLOCK function does
not operate.1.
Ensure automatic door lock/unlock function (unlock oper-
ation) is enabled. DLK-56
2. Check BCM for DTC.
BCS-51
3. Check intermittent incident. GI-38
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-106
2. Remote Keyless Entry function check.DLK-103
3. Replace Intelligent Key unit. SEC-111
Selective unlock function does not operate by In-
telligent Key remote control button.1.
Check “SELECT UNLOCK FUNCTION” setting in “WORK SUP-
PORT”.
DLK-56
2. Intelligent Key battery inspection.
DLK-106
3. Replace Intelligent Key unit. SEC-111
Revision: December 20092009 QX56

DOOR LOCK FUNCTION SYMPTOMSDLK-209
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Auto lock function does not operate properly. 1. Check “AUTO RELOCK TIMER” setting in “WORK SUPPORT”.
DLK-56
2. Key switch check (BCM).DLK-115
3. Ignition knob switch check.DLK-116
4. Door switch check. DLK-71
5. Replace Intelligent Key unit.SEC-111
Key reminder function does not operate properly.1.
Check “ANTI KEY LOCK IN FUNCTION” setting in “WORK
SUPPORT”.
DLK-56
2. Door switch check.
DLK-71
3a. Inside key antenna 1 (rear of center console) check.DLK-60
3b. Inside key antenna 2 (luggage compartment) check.DLK-62
3c. Inside key antenna 3 (front of center console) check.DLK-64
3d. Inside key antenna 4 (overhead console area) check.DLK-66
4. Front door lock actuator LH (door unlock sensor) check.DLK-81
5. Intelligent Key battery inspection.DLK-106
6. Replace Intelligent Key unit. SEC-111
Panic alarm function does not operate properly.1. Check “PANIC ALARM DELAY” setting in “WORK SUPPORT”.
DLK-56
2. Theft warning operation check.DLK-212
3. Intelligent Key battery inspection.DLK-106
4. Key switch check (BCM). DLK-115
5. Ignition knob switch check.DLK-116
6. Replace Intelligent Key unit.SEC-111
Back door open function does not operate prop-
erly.1. Back door diagnosis.
DLK-1232. Intelligent Key battery inspection.DLK-106
3. Replace Intelligent Key unit. SEC-111
Power window down function does not operate.1. Check “PW DOWN SET” setti
ng in “WORK SUPPORT”. DLK-562. Intelligent Key battery inspection. DLK-106
SymptomDiagnosis/service procedureReference
page
Revision: December 20092009 QX56

DLK-210
< SYMPTOM DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BACK DOOR OPENER FUNCTION
BACK DOOR OPENER FUNCTION
BACK DOOR OPENER SWITCH
BACK DOOR OPENER SWITCH : Symptom TableINFOID:0000000003775836
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 HANDLE
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-141
Park switch —
Power window serial link —
Pinch strip system inspection DLK-133
Automatic operations are not carried out together with open/close
operations.
(Manual operations are normal). Power liftgate switch system inspection
DLK-141Back door close switch system inspectionDLK-137
Auto back door power supply and ground cir-
cuit system inspection. DLK-69
The auto closure function does not operate.
(Stops at the halfway position for auto closing operations).
Pinch strip system inspection
DLK-133
During auto closing operations, if obstruction is detected, the door
does not operate in reverse. Back door motor assembly
DLK-243
During close or cinch operations, the door does not operate in re-
verse if the back door handle is operated. Handle switch system
DLK-140
When the keyfob is operated, the back door does not operate au-
tomatically. Remote keyless entry system inspection
DLK-103Power window serial link —
Pinch strip system inspection DLK-133
Auto closure does not operate. Half-latch switch system
DLK-135Cinch latch motor systemDLK-139
Handle switch systemDLK-140
The back door does not open.
(Closure motor rotation is not reversed). Open switch system
DLK-136
Handle switch systemDLK-140
Warning chime does not sound. Back door warning chime systemDLK-134
Auto closure operation works, but the back door is not fully closed Close switch system
DLK-137
Handle switch systemDLK-140
Cinch latch motor systemDLK-139
Back door latch assembly mechanism dam-
aged or worn.DLK-243
Auto open operation releases lock, but does not fully open back
door. Glass hatch ajar switch check
DLK-129
Glass hatch lock actuator does not operate
(Right front door must be unlocked for normal operation) Glass hatch switch check
DLK-127Glass hatch lock actuator check DLK-92
Replace BCMBCS-56
Revision: December 20092009 QX56

BACK DOOR OPENER FUNCTIONDLK-211
< SYMPTOM DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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BACK DOOR HANDLE : Symptom TableINFOID:0000000003775837
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:0000000003775838
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-210
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-972. Intelligent Key unit power back door input signal.DLK-140
3. Intelligent Key unit power back door output signal.DLK-141
4. Intelligent Key battery and function check.DLK-106
SymptomDiagnosis/service procedureReference page
Back door open function does not operate
by Intelligent Key. 1. Check Intelligent Key battery inspection.
DLK-106
2. Intelligent Key unit power and ground check. DLK-68
3. Check intermittent incident. GI-38
Revision: December 20092009 QX56