Power Door Lock Control System - Rear Double Lock Motor Lh Circuit

Lexus IS250 IS220d GSE20 ALE20 - DOOR LOCK

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT REAR DOOR LOCK ASSEMBLY LH (DOUBLE LOCK MOTOR)

CHECK WIRE HARNESS (REAR DOOR LOCK ASSEMBLY LH - DOUBLE DOOR LOCK ECU)

POWER DOOR LOCK CONTROL SYSTEM - Rear Double Lock Motor LH Circuit

DESCRIPTION

The rear left side door double lock motor is built into the rear left side door lock assembly.


The double door lock ECU receives rear left side door double door lock set/release signals from the main body ECU RH using multiplex communication.


The double door lock ECU controls the double lock motor to set/release the double door lock. This ECU applies current from terminal ACTS to terminal ACTR to operate the motor to set the lock. It reverses the direction of the current to operate the motor to release the lock.


WIRING DIAGRAM

Power Door Lock Control System - Rear Double Lock Motor Lh Circuit. DOOR LOCK. Lexus IS250 IS220d GSE20 ALE20

INSPECTION PROCEDURE

1.INSPECT REAR DOOR LOCK ASSEMBLY LH (DOUBLE LOCK MOTOR)
Power Door Lock Control System - Rear Double Lock Motor Lh Circuit. DOOR LOCK. Lexus IS250 IS220d GSE20 ALE20

Remove the rear door lock assembly LH.

Apply battery voltage and set the door lock motor to the lock position.

  • OK:
  • Measurement ConditionSpecified Condition
    Battery positive (+) →Terminal 2
    Battery negative (-) →Terminal 1    		Lock

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

  • OK:
  • Measurement ConditionSpecified Condition
    Battery positive (+) →Terminal 4
    Battery negative (-) →Terminal 3    		Double Locking System is set
    Battery positive (+) →Terminal 3
    Battery negative (-) →Terminal 4    		Double Locking System is unset

Check that the doors cannot be unlocked by operating the control cable while the double locking system is set.

  • OK:
  • The doors cannot be unlocked.
NG
REPLACE REAR DOOR LOCK ASSEMBLY LH
OK
2.CHECK WIRE HARNESS (REAR DOOR LOCK ASSEMBLY LH - DOUBLE DOOR LOCK ECU)
Power Door Lock Control System - Rear Double Lock Motor Lh Circuit. DOOR LOCK. Lexus IS250 IS220d GSE20 ALE20

Disconnect the rear door lock assembly LH connector.

Disconnect the double door lock ECU connector.

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

  • Standard resistance:
  • Tester Connection
    (Symbols)    		ConditionSpecified Condition
    O8-4 (DL) - P34-3 (ACTS)AlwaysBelow 1 Ω
    O8-3 (UNDL) - P34-4 (ACTR)AlwaysBelow 1 Ω
    O8-4 (DL) - Body groundAlways10 kΩ or higher
    O8-3 (UNDL) - Body groundAlways10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE