ECU INFINITI QX56 2009 Factory Service Manual

BACK DOOR CONTROL UNITDLK-197
< ECU DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
ABKIA0074GB
Revision: December 20092009 QX56

DLK-198
< ECU DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BACK DOOR CONTROL UNIT
ABKIA0075GB
Revision: December 20092009 QX56

BACK DOOR CONTROL UNITDLK-199
< ECU DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
ABKIA0076GB
Revision: December 20092009 QX56

DLK-200
< ECU DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BACK DOOR CONTROL UNIT
ABKIA0077GB
Revision: December 20092009 QX56

BACK DOOR CONTROL UNITDLK-201
< ECU DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
ABKIA0078GB
Revision: December 20092009 QX56

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]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
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]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
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-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