DLK-133 INFINITI QX56 2010 Factory Service Manual

AUTOMATIC BACK DOOR SELF-DIAGNOSIS PROCEDUREDLK-123
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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AUTOMATIC BACK DOOR SELF-DIAGNOSIS PROCEDURE
Self-Diagnosis ProcedureINFOID:0000000005146997
INPUT SIGNAL CHECK MODE
Input signal check mode allows testing of swit ch input signal to the back door control unit.
To activate input signal check mode on the automatic sliding door, perform the following steps:
1. Turn ignition switch OFF.
2. Turn back door close switch to CANCEL (system cancelled).
3. Place A/T selector lever in P position.
4. Using the inside emergency release lever, open the back door.
5. Have an assistant press and hold the back door handle switch.
6. While the assistant continues to hold the back door handle switch, turn ignition switch ON (DO NOT start
engine).
7. After approximately 5 seconds, the back door warning chime will sound for 0.5 seconds.
8. Release the back door handle switch.
9. Within 8 seconds of the back door warning chime sounding, press and hold the power liftgate switch.
10. After approximately 5 seconds, the back door warning chime will sound for 1 second.
11. Release the power liftgate switch.
12. The input signal check mode is now initialized.
The input signal check mode can test the following inputs. The back door warning chime will sound for approx-
imately 0.5 second each time a switch signal input oc curs. Use this test when one of these inputs is not
responding during normal automatic back door operation.
*Back door warning chime should sound as soon as vehicle moves.
Turn ignition switch OFF to end input signal check mode.
OPERATING CHECK MODE
Operating check mode allows self-diagnos is of the automatic back door system.
To activate operating check mode on the automatic back door, perform the following steps:
1. Turn ignition switch OFF.
2. Turn back door close switch to CANCEL (system cancelled).
3. Place A/T selector lever in P position.
4. Using the inside emergency release lever, open the back door.
5. Have an assistant press and hold the back door handle switch.
6. While the assistant continues to hold the back door handle switch, turn ignition switch ON (DO NOT start engine).
7. After approximately 5 seconds, the back door warning chime will sound for 0.5 second.
8. Release the back door handle switch.
Switch signal OperationRefer to
Power liftgate switch OFF → ONDLK-129
Back door close switch (CLOSE) OFF → ON DLK-131
Back door close switch (CANCEL) OFF → ON DLK-133
Back door handle switch OFF → ON DLK-140
A/T shift selector (park position switch) P position → other than P position DLK-101
Vehicle speed* Vehicle speedTM-50
Remote keyless entry signal Keyfob switch OFF → ON DLK-103
Door lock/unlock signal LOCK → UNLOCK DLK-74
Pinch strip LH signal OFF → ON DLK-135
Pinch strip RH signal OFF → ON DLK-135
Revision: April 20092010 QX56

BACK DOOR CLOSE (CANCEL) SWITCH SYSTEMDLK-133
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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BACK DOOR CLOSE (CANCEL) SWITCH SYSTEM
Diagnosis ProcedureINFOID:0000000005147002
Regarding Wiring Diagram information, refer to DLK-199, "Wiring Diagram—AUTOMATIC BACK DOOR SYS-
TEM—".
1.BACK DOOR CLOSE SWITCH FUNCTION INSPECTION
Check back door close (cancel) s witch using switch operation.
Is the inspection result normal?
YES >> Back door close switch is OK.
NO >> GO TO 2
2.BACK DOOR CLOSE (CANCEL) SWITCH SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While operating the back door close (cancel) switch, check volt- age between back door control uni t connector B55 terminal 13
and ground.
Is the inspection result normal?
YES >> Switch is OK.
NO >> GO TO 3
3.BACK DOOR CLOSE (CANCEL) SWITCH CIRCUIT INSPECTION
1. Disconnect back door close switch and back door control unit connector.
2. Check continuity between back door control unit connector (A) B55 terminal 13 and back door close switch connector (B) B63
terminal 5.
3. Check continuity between back door control unit connector (A) B55 terminal 13 and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair the harness between the back door close switch and the back door control unit.
4.BACK DOOR CLOSE SWITCH GROUND INSPECTION
Te r m i n a l s
Measuring condition Voltage (V)
(Approx.)
(+) (-)
13 Ground Back door
close switch ON
0
OFF 5
LIIA1068E
13 - 5 : Continuity should exist.
13 - Ground : Continuity should not exist.
ALKIA0671ZZ
Revision: April 20092010 QX56