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Power Door Lock Control System

WARNING: This page is about a different car, the 2003 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.

This system uses the multiplex communication system, so check diagnosis system of the multiplex communication system before you proceed with troubleshooting.

PROBLEM SYMPTOMS - POWER DOOR LOCK CONTROL SYSTEM

Symptom Suspect Area Go To
All the doors cannot be locked or unlocked. (Power Window Control System is normal.)
  1. Door Lock Control Switch
  2. Wire Harness
  3. Body ECU
  1. SYSTEM OPERATION CHECK
  2. -
  3. BODY CONTROL SYSTEM
Only one side door lock control does not operate.
  1. Door Lock Motor
  2. Wire Harness
  1. SYSTEM OPERATION CHECK
  2. -
Door key related function does not operate.
  1. Door Key Lock and Unlock Switch
  2. Wire Harness
  3. Body ECU
  1. SYSTEM OPERATION CHECK
  2. -
  3. BODY CONTROL SYSTEM
Key confinement prevention function does not operate.
  1. Key Unlock Warning Switch
  2. Door Courtesy Switch
  3. Wire Harness
  4. Body ECU
  1. INSPECTION
  2. INSPECTION
  3. -
  4. BODY CONTROL SYSTEM
Luggage compartment door opener function does not operate.
  1. Luggage Compartment Door Opener Switch
  2. Luggage Compartment Door Opener Motor
  3. Wire Harness
  4. Body ECU
  1. SYSTEM OPERATION CHECK
  2. SYSTEM OPERATION CHECK
  3. -
  4. BODY CONTROL SYSTEM
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