Door Switch

DOOR SWITCH





Description
Detects door open/close condition and transmits the signal to BCM.




Component Function Check
1. CHECK FRONT DOOR SWITCH INPUT SIGNAL
Check ("DOOR SW-DR" and "DOOR SW-AS") in "DATA MONITOR" mode with CONSULT-III. Retained Power.





Is the inspection result normal?
YES - Front door switch circuit is OK.
NO - SEE Diagnosis Procedure (Crew Cab).




Diagnosis Procedure (Crew Cab)
Regarding Wiring Diagram information, Crew Cab.
1. CHECK FRONT DOOR SWITCH





Check voltage between BCM connector and ground.






Is the measurement value within the specification?
YES - Replace BCM. Service and Repair.
NO - GO TO 2
2. CHECK HARNESS CONTINUITY





1. Turn ignition switch OFF.
2. Disconnect BCM and front door switch.
3. Check continuity between BCM connector and front door switch connector.





4. Check continuity between front door switch connector and ground.





Is the inspection result normal?
YES - GO TO 3
NO - Repair or replace harness.
3. CHECK BCM OUTPUT SIGNAL





1. Connect BCM connector.
2. Check voltage between BCM connector and ground.





Is the measurement value within the specification?
YES - GO TO 4
NO - Replace BCM. Service and Repair.
4. CHECK FRONT DOOR SWITCH
Check front door switch. SEE Component Inspection (Crew Cab).
Is the inspection result normal?
YES - Check intermittent incident. Intermittent Incident.
NO - Replace front door switch.




Diagnosis Procedure (King Cab)
Regarding Wiring Diagram information, King Cab.
1. CHECK FRONT DOOR SWITCH





Check voltage between BCM connector and ground.






Is the measurement value within the specification?
YES - Replace BCM. Service and Repair.
NO - GO TO 2
2. CHECK FRONT DOOR SWITCH GROUND CIRCUIT





1. Disconnect front door switch.
2. Check continuity between front door switch connector and ground.





Is the inspection result normal?
YES - GO TO 3
NO - Repair or replace harness.
3. CHECK BCM OUTPUT SIGNAL





1. Connect BCM connector.
2. Check voltage between BCM connector and ground.





Is the measurement value within the specification?
YES - GO TO 4
NO - Replace BCM. Service and Repair.
4. CHECK FRONT DOOR SWITCH
Check front door switch. SEE Component Inspection (King Cab).
Is the inspection result normal?
YES - Check intermittent incident. Intermittent Incident.
NO - Replace front door switch.




Component Inspection (Crew Cab)
1. CHECK FRONT DOOR SWITCH





1. Turn ignition switch OFF.
2. Disconnect front door switch.
3. Check continuity between front door switch terminals.





Is the inspection result normal?
YES - Inspection End.
NO - Replace front door switch.




Component Inspection (King Cab)
1. CHECK FRONT DOOR SWITCH





1. Turn ignition switch OFF.
2. Disconnect front door switch.
3. Check continuity between front door switch terminals.





Is the inspection result normal?
YES - Inspection End.
NO - Replace front door switch.