Door Lock Actuator Circuit Check [Driver Side]

Door Lock Actuator Circuit Check [Driver Side]

Description

Locks/unlocks the door with the signal from BCM.

Component Function Check

1. CHECK FUNCTION

1 Use SDT to perform Active Test "DOOR LOCK".
2 Touch "ALL LCK" or "ALL ULK" to check that it works normally.

Is the inspection result normal?
YES
Door lock actuator is OK.
NO
Refer to "Diagnosis Procedure".

Diagnosis Procedure

Regarding Wiring Diagram information, refer to [Power Door Lock System: Wiring Diagram [King Cab] Power Door Lock System [King Cab] ] or [Power Door Lock System: Wiring Diagram [Crew Cab] Power Door Lock System [Crew Cab] ].

1. CHECK DOOR LOCK ACTUATOR SIGNAL

1 Turn ignition switch OFF.
2 Check voltage between BCM connector M20 terminals 59, 65 and ground.











Is the inspection result normal?
YES
GO TO 2
NO
GO TO 3

2. CHECK DOOR LOCK ACTUATOR HARNESS

1 Disconnect BCM and front door lock assembly LH (actuator).
2 Check continuity between BCM connector (A) M20 terminals 59, 65 and front door lock assembly LH (actuator) connector (B) D14 terminals 1, 2.











Is the inspection result normal?
YES
Replace front door lock assembly LH (actuator).
NO
Repair or replace harness.

3. CHECK DOOR LOCK ACTUATOR HARNESS

1 Disconnect BCM and front door lock assembly LH (actuator).
2 Check continuity between BCM connector M20 terminals 59, 65 and ground.











Is the inspection result normal?
YES
Replace BCM. Refer to [BCM: Removal and Installation] Removal and Replacement.
NO
Repair or replace harness.