Power Door Lock Control System - Rear Double Lock Position Switch Lh Circuit

Lexus IS250 IS220d GSE20 ALE20 - DOOR LOCK

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT REAR DOOR LOCK ASSEMBLY LH (DOUBLE LOCK POSITION SWITCH)

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

POWER DOOR LOCK CONTROL SYSTEM - Rear Double Lock Position Switch LH Circuit

DESCRIPTION

The rear left side door double lock position switch is built into the rear left side door lock assembly. The switch turns on when the rear left side door double lock is set and turns off when the double lock is released.


The double door lock ECU is connected to the rear left side door lock assembly via terminal DLPL and rear left side door double lock set/released state signals are input to the ECU.


The double door lock ECU applies voltage to terminal DLSR of the double lock position switch via terminal DLPL. When the switch is on (there is continuity between the switch terminals), a set state signal is input to the ECU. When the switch is off (there is no continuity between the switch terminals), a release state signal is input.


The double door lock ECU sends rear left side door double lock set/released state signal to the main body ECU RH using multiplex communication.


WIRING DIAGRAM

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

INSPECTION PROCEDURE

1.INSPECT REAR DOOR LOCK ASSEMBLY LH (DOUBLE LOCK POSITION SWITCH)
Power Door Lock Control System - Rear Double Lock Position Switch 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

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

  • Standard resistance:
  • Tester ConnectionDouble Lock PositionSpecified Condition
    9 - 10SetBelow 1 Ω
    9 - 10Unset10 kΩ or higher
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 Position Switch 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
    O8-9 (DLSR) - P34-12 (DLPL)AlwaysBelow 1 Ω
    O8-9 (DLSR) - Body groundAlways10 kΩ or higher
    O8-10 (E) - Body groundAlwaysBelow 1 Ω
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE