Door Switch Circuit

DOOR SWITCH CIRCUIT





Component Function Check
1.CHECK EACH DOOR SWITCH SIGNAL BY CONSULT-III
CONSULT-III DATA MONITOR
1. Turn ignition switch ON.
2. Select "DOOR SW-DR", "DOOR SW-AS", "DOOR SW-RR" and "DOOR SW-RL" of TOTAL ILLUM C/U data monitor item.
3. While operating each door switch, check the monitor status.





Is the item status normal?
YES - Each door switch circuit is normal.
NO - SEE Diagnosis Procedure.




Diagnosis Procedure
1.CHECK EACH DOOR SWITCH INPUT SIGNAL
While operating each door switch, check the voltage between the total illumination control unit harness connector and the ground.










Is the measurement value normal?
Fixed at 8.5 - 9.5 V-Replace the total illumination control unit.
Fixed at 0 V-GO TO 2.
2.CHECK TOTAL ILLUMINATION CONTROL UNIT (INTERNAL SHORT)
1. Turn ignition switch OFF.
2. Disconnect the total illumination control unit connector.
3. Turn ignition switch ON.
4. Check voltage between the total illumination control unit harness connector and ground.






Does continuity exist?
YES - Replace the total illumination control unit.
NO - GO TO3.
3.CHECK EACH DOOR SWITCH SIGNAL CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect each door switch connector.
3. Check continuity between the total illumination control unit harness connector and each door switch harness connector.





Does continuity exist?
YES - GO TO 4.
NO - Repair the harnesses or connectors.
4.CHECK EACH DOOR SWITCH SIGNAL CIRCUIT FOR SHORT
Check continuity between total illumination control unit harness connector and ground.





Does continuity exist?
YES - Repair the harnesses or connectors.
NO - Check each door switch. Door Switch Without Automatic Back Door.