B2420

B2420 CLOSE SWITCH





DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check "Self Diagnostic Result" mode of "AUTOMATIC BACK DOOR CONTROL UNIT" using CONSULT-III.
Is DTC detected?
YES - SEE Diagnosis Procedure.
NO - INSPECTION END




Diagnosis Procedure
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 CLOSE SWITCH SIGNAL
1. Select "AUTOMATIC BACK DOOR CONTROL UNIT" using CONSULT-III.
2. Select "CLOSE 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 CLOSE SWITCH INPUT SIGNAL
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 CLOSE SWITCH CIRCUIT
1. Disconnect automatic back door control unit connector.
2. Check continuity between automatic back door control unit harness connector and back door lock assembly harness connector.





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





Is the inspection result normal?
YES - Replace automatic back door control unit. Automatic Back Door Control Unit.
NO - Repair or replace harness.
6.CHECK CLOSE 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 CLOSE SWITCH
B2409.
Is the inspection result normal?
YES - GO TO 8.
NO - Replace back door lock assembly.
8.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
- INSPECTION END




Component Inspection

COMPONENT INSPECTION
1.CHECK SWITCH
1. Turn ignition switch OFF.
2. Disconnect back door lock assembly.
3. Check continuity between back door lock assembly terminals.





Is the inspection result normal?
YES - INSPECTION END
NO - Replace back door lock assembly.