Driver Side Door Lock Motor Circuit

DESCRIPTION

The driver's door lock motor is built into the driver's door lock assembly.
The body ECU controls the driver's door lock motor to lock/unlock the driver's door. This ECU applies current from terminal ACT+ to terminal ACT- to operate the motor to lock the door. It reverses the direction of the current flow to operate the motor to unlock the door.

WIRING DIAGRAM

INSPECTION PROCEDURE

1. INSPECT FRONT DOOR LOCK ASSEMBLY (DOOR LOCK MOTOR)

1. LHD Models:
   Remove the front door lock assembly LH.

   1. Apply battery voltage and check operation of the door lock motor.

      OK:

      Measurement Condition	Specified Condition
      Battery positive (+) → Terminal 4 Battery negative (-) → Terminal 3	Lock
      Battery positive (+) → Terminal 3 Battery negative (-) → Terminal 4	Unlock

2. RHD Models:Remove the front door lock assembly RH.

   1. Apply battery voltage and check operation of the door lock motor.

      OK:

      Measurement Condition	Specified Condition
      Battery positive (+) → Terminal 2 Battery negative (-) → Terminal 1	Lock
      Battery positive (+) → Terminal 1 Battery negative (-) → Terminal 2	Unlock

NG	REPLACE FRONT DOOR LOCK ASSEMBLY

OK

2. CHECK WIRE HARNESS (FRONT DOOR LOCK ASSEMBLY - INSTRUMENT PANEL J/B)

1. LHD Models:Disconnect the front door lock assembly LH connector.

   1. Disconnect the instrument panel J/B connectors.

   2. Measure the resistance according to the value(s) in the table below.

      Standard resistance:

      Tester Connection	Condition	Specified Condition
      D10-4 (L) - 1K-2	Always	Below 1 Ω
      D10-3 (UL) - 1F-18	Always	Below 1 Ω

2. RHD Models:Disconnect the front door lock assembly RH connector.

   1. Disconnect the instrument panel J/B connector.

   2. Measure the resistance according to the value(s) in the table below.

      Standard resistance:

      Tester Connection	Condition	Specified Condition
      D10-2 (L) - 1J-1	Always	Below 1 Ω
      D10-1 (UL) - 1J-2 (ACT-)	Always	Below 1 Ω

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE