B2426

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PERFORM DTC CONFIRMATION PROCEDURE

1.Turn ignition switch ON.
2.Operate automatic back door.
3.Check "Self-Diagnostic Result" mode of "AUTOMATIC BACK DOOR CONTROL MODULE" using CONSULT.
Is DTC detected?
YES- Refer to "Diagnosis Procedure" .
NO- Inspection End.


Diagnosis Procedure

Regarding Wiring Diagram information, refer to "Wiring Diagram" Electrical Diagrams.

1. CALIBRATION OF AUTOMATIC BACK DOOR POSITION INFORMATION

1.Perform initialization setting of automatic back door position information.
Refer to "Work Procedure" Work Procedure.
2.Erase DTC, and then repeat "PERFORM DTC CONFIRMATION PROCEDURE".
Is DTC detected?
YES- GO TO 2.
NO- Inspection End.

2. CHECK INSTALLATION OF BACK DOOR ASSEMBLY

1.Check that back door assembly is installed normally.
Refer to "BACK DOOR ASSEMBLY : Adjustment" Adjustments.
2.Check back door assembly mechanism deformation, looseness, rattle, interference with other parts, and pinched foreign materials.
Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace the malfunctioning parts.

3. CHECK ENCODER SIGNAL

1.Select "AUTOMATIC BACK DOOR CONTROL MODULE" using CONSULT.
2.Select "SPINDLE LH ENCODER A" and "SPINDLE LH ENCODER B" in "DATA MONITOR" mode.
3.Check that the function operates normally according to the following conditions.
Revision: March 20122013 Infiniti JX





Is the inspection result normal?
YES- GO TO 4.
NO- Replace automatic back door control module. Refer to "Removal and Installation" Service and Repair.

4. CHECK ENCODER POWER SUPPLY

1.Turn ignition switch OFF.
2.Disconnect spindle unit LH connector.
3.Check voltage between spindle unit LH harness connector and ground.





Is the inspection result normal?
YES- GO TO 6.
NO- GO TO 5.

5. CHECK ENCODER CIRCUIT

1.Disconnect automatic back door control module connector.
2.Check continuity between automatic back door control module harness connector and spindle unit LH
harness connector.





3.Check continuity between automatic back door control module harness connector and ground.





Is the inspection result normal?
YES- Replace automatic back door control module. Refer to "Removal and Installation" Service and Repair.
NO- Repair or replace harness.

6. CHECK ENCODER CIRCUIT 2

1.Disconnect automatic back door control module connector.
2.Check continuity between automatic back door control module harness connector and spindle unit LH
harness connector.





3.Check continuity between automatic back door control module harness connector and ground.
Revision: March 20122013 Infiniti JX





Is the inspection result normal?
YES- GO TO 7.
NO- Repair or replace harness.

7. CHECK ENCODER CIRCUIT 3

1.Connect automatic back door control module and spindle unit LH connector.
2.Check continuity between automatic back door control module harness connector and ground.





Is the inspection result normal?
YES- GO TO 8.
NO- Replace automatic back door control module. Refer to "Removal and Installation" Service and Repair.

8. CHECK INTERMITTENT INCIDENT

Refer to "Intermittent Incident" Intermittent Incident.
Is the inspection result normal?
YES- Replace automatic back door control module. Refer to "Removal and Installation" Service and Repair.
NO- Repair or replace the malfunctioning parts.
Revision: March 20122013 Infiniti JX