Diagnosis Procedure

DOOR SWITCH

CREW CAB : Diagnosis Procedure

Regarding Wiring Diagram information, Crew Cab.

1. CHECK DOOR SWITCHES INPUT SIGNAL

With CONSULT
Check door switches ("DOOR SW-DR", "DOOR SW-AS") in DATA MONITOR mode with CONSULT. Refer to
Door Lock.
- When any doors are open:
DOOR SW-DR: ON
DOOR SW-AS: ON

- When any doors are closed:
DOOR SW-DR: OFF
DOOR SW-AS: OFF

Without CONSULT





Check voltage between BCM connector M18 or M19 terminals 12, 47 and ground.





Is the inspection result normal?
YES- Door switch circuit is OK.
NO- GO TO 2

2. CHECK DOOR SWITCH CIRCUIT

1.Turn ignition switch OFF.





2.Disconnect BCM.
3.Check continuity between door switch connector B8 (Front LH), B108 (Front RH) terminal 2 and BCM connector M18, M19 terminals 12, and 47.
2 - 47: Continuity should exist.
2 - 12: Continuity should exist.

4.Check continuity between door switch connector B8 (Front LH), B108 (Front RH) terminal 2 and ground.
2 - Ground: Continuity should not exist.
Is the inspection result normal?
YES- GO TO 3
NO- Repair or replace harness.

3. CHECK DOOR SWITCHES

1.Check continuity between door switch terminals.





Is the inspection result normal?
YES- Replace BCM. Service and Repair.
NO- Replace door switch.