2010 INFINITI QX56 DLK-137

HALF-LATCH SWITCH SYSTEMDLK-137
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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HALF-LATCH SWITCH SYSTEM
Diagnosis ProcedureINFOID:0000000005147005
Regarding Wiring Diagram information, refer to DLK-199, "Wiring Diagram—AUTOMATIC BACK DOOR SYS-
TEM—".
1.HALF-LATCH SWITCH SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While fully opening and closing the back door, check voltage between back door control unit connector B55 terminal 22 and
ground.
Is the inspection result normal?
YES >> Half-latch switch is OK.
NO >> GO TO 2
2.HALF-LATCH SWITCH CIRCUIT INSPECTION
1. Disconnect back door latch switch and back control unit connector.
2. Check continuity between back door control unit connector (A) B55 terminal 22 and back door latch (half-latch switch) connec-
tor (B) D705 terminal 6.
3. Check continuity between back control unit connector (A) B55 terminal 22 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair the harness between the back door latch (half-latch switch) and the back door control unit.
3.HALF-LATCH SWITCH GROUND INSPECTION
Check continuity between back door latch (half-latch switch) connec-
tor D705 terminal 8 and ground.
Is the inspection result normal?
YES >> Replace the back door latch.
NO >> Repair the harness between the back door latch (half-
latch switch) and ground.
22 - Ground
LIIA0826EPIIA2169E
22 - 6 : Continuity should exist.
22 - Ground : Continuity should not exist.
ALKIA0675ZZ
8 - Ground : Continuity should exist.
LIIA0828E
Revision: April 20092010 QX56

DLK-214
< SYMPTOM DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BACK DOOR OPENER FUNCTION
BACK DOOR OPENER FUNCTION
BACK DOOR OPENER SWITCH
BACK DOOR OPENER SWITCH : Symptom TableINFOID:0000000005147035
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-143
Park switch —
Power window serial link —
Pinch strip system inspection DLK-135
Automatic operations are not carried out together with open/close
operations.
(Manual operations are normal). Power liftgate switch system inspection
DLK-143Back door close switch system inspectionDLK-139
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-135
During auto closing operations, if obstruction is detected, the door
does not operate in reverse. Back door motor assembly
DLK-247
During close or cinch operations, the door does not operate in re-
verse if the back door handle is operated. Handle switch system
DLK-142
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-135
Auto closure does not operate. Half-latch switch system
DLK-137Cinch latch motor systemDLK-141
Handle switch systemDLK-142
The back door does not open.
(Closure motor rotation is not reversed). Open switch system
DLK-138
Handle switch systemDLK-142
Warning chime does not sound. Back door warning chime systemDLK-136
Auto closure operation works, but the back door is not fully closed Close switch system
DLK-139
Handle switch systemDLK-142
Cinch latch motor systemDLK-141
Back door latch assembly mechanism dam-
aged or worn.DLK-247
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-59
Revision: April 20092010 QX56