Diagnosis Procedure

DOOR LOCK AND UNLOCK SWITCH

CREW CAB : Diagnosis Procedure

Regarding Wiring Diagram information, Wiring Diagram - Crew Cab.

1. CHECK DOOR LOCK/UNLOCK SWITCH INPUT SIGNAL

With CONSULT
Check door lock/unlock switch ("CDL LOCK SW", "CDL UNLOCK SW") in DATA MONITOR mode in CONSULT. CONSULT Function.
- When door lock/unlock switch is turned to LOCK:
CDL LOCK SW: ON
- When door lock/unlock switch is turned to UNLOCK:
CDL UNLOCK SW: ON
Without CONSULT
Check voltage between BCM connector M19 terminals 45, 46 and ground.










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

2. CHECK DOOR LOCK/UNLOCK SWITCH

1.Turn ignition switch OFF.
2.Disconnect door lock/unlock switch.





3.Check continuity between main power window and door lock/
unlock switch terminals 10, 11 and 14.





4.Check continuity between power window and door lock/unlock switch RH terminals 1, 2 and 3.





Is the inspection result normal?
YES- GO TO 3
NO- Replace door lock/unlock switch.

3. CHECK DOOR LOCK/UNLOCK SWITCH GROUND HARNESS

1.Disconnect main power window and door lock/unlock switch or power window and door lock/unlock switch
RH.





2.Check continuity between main power window and door lock/
unlock switch connector D7 terminal 14 and ground.
14 - Ground: Continuity should exist.





3.Check continuity between power window and door lock/unlock switch RH connector D105 terminal 3 and ground
3 - Ground: Continuity should exist.
Is the inspection result normal?
YES- GO TO 4
NO- Repair or replace harness.

4. CHECK DOOR LOCK SWITCH CIRCUIT

1.Disconnect BCM.
2.Check continuity between BCM connector M19 terminal 45 and main power window and door lock/unlock switch connector D7 terminal 10 or power window and door lock/unlock switch RH connector D105 terminal 1.





1 - 45: Continuity should exist.
10 - 45: Continuity should exist.

3.Check continuity between BCM connector M19 terminal 45 and ground.
45 - Ground: Continuity should not exist.
4.Check continuity between BCM connector M19 terminal 46 and main power window and door lock/unlock switch LH connector D7 terminal 11 or power window and door lock/unlock switch RH connector D105 terminal 2.





2 - 46: Continuity should exist.
11 - 46: Continuity should exist.

5.Check continuity between BCM connector M19 terminal 46 and ground.
46 - Ground: Continuity should not exist.
Is the inspection result normal?
YES- GO TO 5
NO- Repair or replace harness.

5. CHECK BCM OUTPUT VOLTAGE

1.Connect BCM.





2.Check voltage between BCM connector M19 terminals 45, 46
and ground.
45 - Ground: Battery voltage
46 - Ground: Battery voltage

Is the inspection result normal?
YES- Check condition of the harness and connector.
NO- Replace BCM. Service and Repair.