B2422

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" Engine Start Function.

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 SENSOR LH" and "SPINDLE SENSOR RH" in "DATA MONITOR" mode.
3.Check that the function operates normally according to the following conditions.
Revision: March 20122013 Infiniti JX





Is the difference between the 2 monitor items 10 or more?
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 connector.
3.Check voltage between spindle unit 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 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 harness connector.
Revision: March 20122013 Infiniti JX





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





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 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