Crew Cab

DOOR SWITCH - CREW CAB





Description
Detects door open/close condition.




Component Function Check
1.CHECK FUNCTION
With CONSULT-III
Check door switches in Data Monitor mode with CONSULT-III.





Is the inspection result normal?
YES - Door switch is OK.
NO - SEE Diagnosis Procedure.




Diagnosis Procedure
Regarding Wiring Diagram information, Wiring Diagram - Crew Cab.
1.CHECK DOOR SWITCHES INPUT SIGNAL
With CONSULT-III
Check door switches ("DOOR SW-DR", "DOOR SW-AS", "DOOR SW-RL", "DOOR SW-RR") in DATA MONITOR mode with CONSULT-III. CONSULT-III Function.
- When any doors are open:






- When any doors are closed:











Without CONSULT-III
Check voltage between BCM connector M18 or M19 terminals 12, 13, 47, 48 and ground.











Is the inspection result normal?
YES - Door switch circuit is OK.
NO - GO TO 2
2.CHECK BCM OUTPUT VOLTAGE
1. Turn ignition switch OFF.
2. Disconnect door switches.





3. Check voltage between BCM connector M18, M19 terminals 12, 13, 47, 48 and ground.






Is the inspection result normal?
YES - GO TO 3
NO - Replace BCM. Service and Repair.
3.CHECK DOOR SWITCH CIRCUIT
1. Disconnect door switch and BCM.
2. Check continuity between door switch connector B8 (Front LH), B108 (Front RH), B18 (Rear LH), B116
(Rear RH) terminal 2 and BCM connector M18, M19 terminals 12, 13, 47 and 48.











3. Check continuity between door switch connector B8 (Front LH), B108 (Front RH), B18 (Rear LH), B116 (Rear RH) terminal 2 and ground.






Is the inspection result normal?
YES - GO TO 4
NO - Repair or replace harness.
4.CHECK DOOR SWITCHES
1. Disconnect door switch.
2. Check continuity between door switch terminals.










Is the inspection result normal?
YES - Check switch case ground condition.
NO - Replace door switch.