B2419

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. CHECK FOR FOREIGN MATERIALS IN BACK DOOR LOCK ASSEMBLY

Check for entry of foreign materials in back door lock assembly.
Is the inspection result normal?
YES- GO TO 2.
NO- Remove foreign materials.

2. CHECK BACK DOOR OPEN/CLOSE OPERATION

Manually check open and close operation of back door.
Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace the malfunctioning parts.

3. CHECK OPEN SWITCH SIGNAL

1.Select AUTOMATIC BACK DOOR CONTROL MODULE using CONSULT.
2.Select OPEN SW in DATA MONITOR mode.
3.Check that the function operates normally according to the following conditions.





Is the inspection result normal?
YES- GO TO 8.
NO- GO TO 4.

4. CHECK OPEN SWITCH INPUT SIGNAL

Revision: March 20122013 Infiniti JX
1.Turn ignition switch OFF.
2.Disconnect back door lock assembly connector.
3.Check voltage between back door lock assembly harness connector and ground.





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

5. CHECK OPEN SWITCH CIRCUIT

1.Disconnect automatic back door control module connector.
2.Check continuity between automatic back door control module harness connector and back door lock assembly 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 OPEN SWITCH GROUND CIRCUIT

Check continuity between back door lock assembly harness connector and ground.





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

7. CHECK OPEN SWITCH

Refer to "Component Inspection" B2409.
Is the inspection result normal?
YES- GO TO 8.
NO- Replace back door lock assembly. Refer to "DOOR LOCK : Removal and Installation" Door Lock.

8. CHECK INTERMITTENT INCIDENT

Refer to "Intermittent Incident" Intermittent Incident.
- Inspection End.


Component Inspection


COMPONENT INSPECTION

Revision: March 20122013 Infiniti JX

1. CHECK SWITCH

1.Turn ignition switch OFF.
2.Disconnect back door lock assembly connector.
3.Check continuity between back door lock assembly terminals.





Is the inspection result normal?
YES- Inspection End.
NO- Replace back door lock assembly. Refer to "DOOR LOCK : Removal and Installation" Door Lock.
Revision: March 20122013 Infiniti JX