2010 INFINITI QX56 door lock

DIAGNOSIS SYSTEM (INTELLIGENT KEY UNIT)DLK-57
< FUNCTION DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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Test item Description
DOOR LOCK/UNLOCK This test is able to check door lock/unlock operation.
• ALL UNLK: All door lock actuators are unlocked.
• DR UNLK: Door lock actuator (driver side) is unlocked.
• AS UNLK: Door lock actuator (passenger side) is unlocked.
• BK UNLK: This item is indicated, but inactive.
• LOCK: All door lock actuator is locked.
ANTENNA This test is able to check Intelligent Key antenna operation.
When the following condition are met, hazard warning lamps flash.
• ROOM ANT1: Center console area antenna (rear) and luggage area antenna detect Intelligent Key, when
“ROOM ANT1” is selected.
• ROOM ANT2: Center console area antenna (front) and overhead console area antenna detect Intelligent Key, when “ROOM ANT2” is selected.
• LUG ANT: This selection is not used.
• DR ANT: Outside key antenna (driver side) detects Intelligent Key, when “DR ANT” is selected.
• AS ANT: Outside key antenna (passenger side) detects Intelligent Key, when “AS ANT” is selected.
• BK DR ANT: Outside key antenna (rear bumper) detects Intelligent Key, when “BK DR ANT” is selected.
OUTSIDE BUZZER This test is able to check Intelligent Key warning buzzer operation.
•ON
•OFF
INSIDE BUZZER This test is able to check warning chime in combination meter operation.
• TAKE OUT: Take away warning chime sounds.
• KNOB: Ignition knob switch warning chime sounds.
• KEY: Key warning chime sounds.
•OFF
Revision: April 20092010 QX56

DOOR SWITCHDLK-71
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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DOOR SWITCH
DescriptionINFOID:0000000005146926
Detects door open/close condition.
Component Function CheckINFOID:0000000005146927
1.CHECK FUNCTIONWith CONSULT-III
Check door switches in data monitor mode with CONSULT-III.
Is the inspection result normal?
YES >> Door switch is OK.
NO >> Refer to DLK-71, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005146928
Regarding Wiring Diagram information, refer to DLK-157, "Wiring Diagram — POWER DOOR LOCK SYS-
TEM —".
1.CHECK DOOR SWITCHES INPUT SIGNAL
With CONSULT-III
Check door switches ("DOOR SW-DR", "DOOR SW-AS", "DOOR SW-RL", "DOOR SW-RR", "BACK DOOR
SW") in DATA MONITOR mode with CONSULT–III.
• When doors are open:
• When doors are closed:
Without CONSULT-III
Check voltage between BCM connector M18 or M19 terminals 12, 13, 43, 47, 48 and ground.
Monitor item Condition
DOOR SW-DR
CLOSE → OPEN: OFF → ON
DOOR SW-AS
DOOR SW-RL
DOOR SW-RR
BACK DOOR SW
DOOR SW-DR :ON
DOOR SW-AS :ON
DOOR SW-RL :ON
DOOR SW-RR :ON
BACK DOOR SW :ON
DOOR SW-DR :OFF
DOOR SW-AS :OFF
DOOR SW-RL :OFF
DOOR SW-RR :OFF
BACK DOOR SW :OFF
Revision: April 20092010 QX56

DLK-74
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DOOR LOCK AND UNLOCK SWITCH
DOOR LOCK AND
UNLOCK SWITCH
DRIVER SIDE
DRIVER SIDE : DescriptionINFOID:0000000005146929
Transmits door lock/unlock operation to BCM.
DRIVER SIDE : Component Function CheckINFOID:0000000005146930
1.CHECK FUNCTION
With CONSULT-III
Check CDL LOCK SW, CDL UNLOCK SW in Data Monitor mode with CONSULT-III.
Is the inspection result normal?
YES >> Door lock and unlock switch is OK.
NO >> Refer to DLK-74, "
DRIVER SIDE : Diagnosis Procedure".
DRIVER SIDE : Diagnosis ProcedureINFOID:0000000005146931
Regarding Wiring Diagram information, refer to DLK-157, "Wiring Diagram — POWER DOOR LOCK SYS-
TEM —".
1.CHECK DOOR LOCK/UNLOCK SWITCH INPUT SIGNAL
With CONSULT-III
Check main power window and door lock/unlock switch ("CDL LOCK SW", "CDL UNLOCK SW") in DATA
MONITOR mode in CONSULT–III.
• When main power window and door lock/unlock switch is turned to LOCK:
• When main power window and door lock/unlock switch is turned to UNLOCK:
Without CONSULT-III
1. Remove key from ignition key cylinder.
2. Using an oscilloscope, check the signal between BCM connector M18 terminal 22 and ground when the main power window and door lock/unlock switch is turned to LOCK or UNLOCK.
3. Make sure the signals which are shown in the figur e below can be detected during 10 seconds just after
the door lock/unlock switch is turned to LOCK or UNLOCK.
Monitor item Condition
CDL LOCK SW LOCK
: ON
UNLOCK : OFF
CDL UNLOCK SW LOCK
: OFF
UNLOCK : ON
CDL LOCK SW :ON
CDL UNLOCK SW :ON
Revision: April 20092010 QX56

DOOR LOCK AND UNLOCK SWITCHDLK-75
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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Is the inspection result normal?
YES >> Door lock and unlock switch circuit is OK.
NO >> GO TO 2
2.CHECK BCM OUTPUT SIGNAL
1. Turn ignition switch OFF.
2. Using the vehicle operational Intelligent Key, pr ess and hold the UNLOCK button for more than 3 sec-
onds.
Is the inspection result normal?
YES >> GO TO 3
NO >> Replace BCM. Refer to BCS-59, "
Removal and Installation".
3.CHECK DOOR LOCK/UNLOCK SWITCH GROUND HARNESS
1. Disconnect main power window and door lock/unlock switch.
2. Check continuity between main power window and door lock/ unlock switch connector D8 terminal 17 and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
4.CHECK POWER WINDOW SERIAL LINK CIRCUIT
1. Disconnect BCM.
2. Check continuity between BCM connector M18 term inal 22 and main power window and door lock/unlock
switch connector D7 terminal 14.
Connector Te r m i n a l
Voltage (V)
( + ) ( – )
M18 22 Ground
PIIA6379EPIIA1297E
The front windows should be lowered.
17 - Ground : Continuity should exist.
LIIA0392E
Revision: April 20092010 QX56

DLK-76
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DOOR LOCK AND UNLOCK SWITCH
3. Check continuity between BCM connector M18 terminal 22 and ground.
Is the inspection result normal?
YES >> Replace main power window and door lock/unlock switch.
NO >> Repair or replace harness.
PASSENGER SIDE
PASSENGER SIDE : DescriptionINFOID:0000000005146932
Transmits door lock/unlock operation to BCM.
PASSENGER SIDE : Component Function CheckINFOID:0000000005146933
1.CHECK FUNCTION
With CONSULT-III
Check CDL LOCK SW, CDL UNLOCK SW in Data Monitor mode with CONSULT-III.
Is the inspection result normal?
YES >> Door lock and unlock switch is OK.
NO >> Refer to DLK-76, "
PASSENGER SIDE : Diagnosis Procedure".
PASSENGER SIDE : Diagnosis ProcedureINFOID:0000000005146934
Regarding Wiring Diagram information, refer to DLK-157, "Wiring Diagram — POWER DOOR LOCK SYS-
TEM —".
22 - 14
: Continuity should exist.
LIIA0394E
22 - Ground: Continuity should not exist.
LIIA2359E
Monitor item Condition
CDL LOCK SW LOCK
: ON
UNLOCK : OFF
CDL UNLOCK SW LOCK
: OFF
UNLOCK : ON
Revision: April 20092010 QX56

DOOR LOCK AND UNLOCK SWITCHDLK-77
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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1.CHECK DOOR LOCK/UNLOCK SWITCH INPUT SIGNALWith CONSULT-III
Check power window and door lock/unlock switch RH (" CDL LOCK SW", "CDL UNLOCK SW") in DATA MON-
ITOR mode in CONSULT–III.
• When power window and door lock/unlock switch RH is turned to LOCK:
• When power window and door lock/unlock switch RH is turned to UNLOCK:
Without CONSULT-III
1. Remove key from ignition key cylinder.
2. Using an oscilloscope, check the signal between BCM connector M18 terminal 22 and ground when power window and door lock/unlock switch RH is turned to LOCK or UNLOCK.
3. Make sure the signals which are shown in the figur e below can be detected during 10 seconds just after
the power window and door lock/unlock switch RH is turned to LOCK or UNLOCK.
Is the inspection normal?
YES >> Power window and door lock/unlock switch RH circuit is OK.
NO >> GO TO 2
2.CHECK BCM OUTPUT SIGNAL
1. Turn ignition switch OFF.
2. Using the vehicle operational Intelligent Key, pr ess and hold the UNLOCK button for more than 3 sec-
onds.
Is the inspection normal?
YES >> GO TO 3
NO >> Replace BCM. Refer to BCS-59, "
Removal and Installation".
3.CHECK DOOR LOCK/UNLOCK SWITCH GROUND HARNESS
1. Disconnect power window and door lock/unlock switch RH. CDL LOCK SW
:ON
CDL UNLOCK SW :ON
ConnectorTe r m i n a l
Voltage (V)
( + ) ( – )
M18 22 Ground
PIIA6379EPIIA1297E
The front windows should be lowered.
Revision: April 20092010 QX56

DLK-78
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
DOOR LOCK AND UNLOCK SWITCH
2. Check continuity between power window and door lock/unlock
switch RH connector D105 terminal 11 and ground
Is the inspection normal?
YES >> GO TO 4
NO >> Repair or replace harness.
4.CHECK POWER WINDOW SERIAL LINK CIRCUIT
1. Disconnect BCM.
2. Check continuity between BCM connector M18 terminal 22 and power window and door lock/unlock switch RH connector D105 terminal 16.
3. Check continuity between BCM connector M18 terminal 22 and ground.
Is the inspection normal?
YES >> Replace power window and door lock/unlock switch RH.
NO >> Repair or replace harness. 11 - Ground
: Continuity should exist.
LIIA1140E
22 - 16 : Continuity should exist.
LIIA0395E
22 - ground: Continuity should not exist.
LIIA2359E
Revision: April 20092010 QX56

KEY CYLINDER SWITCHDLK-79
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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KEY CYLINDER SWITCH
DescriptionINFOID:0000000005146935
The main power window and door lock/unlock switch det ects condition of the door key cylinder switch and
transmits to BCM as the LOCK or UNLOCK signal.
Component Function CheckINFOID:0000000005146936
1.CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL
Check "KEY CYL LK-SW" AND "KEY CYL UN-SW" in DATA MONITOR mode for “POWER DOOR LOCK
SYSTEM” with CONSULT-III.
Is the inspection result normal?
YES >> Key cylinder switch is OK.
NO >> Refer to DLK-79, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005146937
Regarding Wiring Diagram information, refer to DLK-157, "Wiring Diagram — POWER DOOR LOCK SYS-
TEM —".
1.CHECK DOOR KEY CYLINDER SWITCH LH
With CONSULT-III
Check front door lock assembly LH (key cylinder switch) ("KEY CYL LK-SW") and ("KEY CYL UN-SW) in
DATA MONITOR mode with CONSULT–III.
• When key inserted in left front key cylinder is turned to LOCK:
• When key inserted in left front key cylinder is turned to UNLOCK:
Without CONSULT-III
Check voltage between main power window and door lock/unlock
switch connector D7 terminals 4, 6 and ground.
Is the inspection result normal?
Monitor item Condition
KEY CYL LK-SW Lock
: ON
Neutral / Unlock : OFF
KEY CYL UN-SW Unlock
: ON
Neutral / Lock : OFF
KEY CYL LK-SW : ON
KEY CYL UN-SW : ON
ConnectorTe r m i n a l s
Condition of left front key cylinder Voltage (V)
(Approx.)
(+) (–)
D7 4
Ground Neutral/Unlock
5
Lock 0
6 Neutral/Lock
5
Unlock 0
LIIA0566E
Revision: April 20092010 QX56