FixVault
Home › Toyota › 2003 › Highlander Limited, AWD › Repair and Diagnosis › External Pages › Different car › Section 548 (Power Door Lock Control System - Diagnostics) › Problem Symptoms Table

Problem Symptoms Table

WARNING: This page is about a different car, the 2004 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
PROBLEM SYMPTOMS TABLE - POWER DOOR LOCK CONTROL SYSTEM

Symptom Suspected Area
All doors are not operated by driver's door key cylinder interlocked with key
  1. Body ECU monitor code
  2. Front door lock assy RH (driver side)
  3. Wire harness
  4. Power window regulator master switch assy (Door ECU)
Key lock-in prevention function does not work properly (Manual operation and operation interlocked with key are active)
  1. Un-lock warning switch assy
  2. Wire harness
  3. Door open warning Light (built in combination meter)
  4. Front door courtesy lamp switch assy (driver side)
Door lock system does not operate at all
  1. Door 20 A fuse
  2. Multiplex Network Body ECU
  3. Wire harness
Door lock system does not operate by manual switch
  1. Power window regulator master switch assy (door ECU) (Door control switch for manual operation)
  2. Multiplex Network Body ECU
  3. Wire harness
Fault in key confinement prevention operate
  1. Multiplex Network Body ECU
  2. Unlock warning switch assy
  3. Front door courtesy lamp switch assy (driver side)
  4. Wire harness
Only one door lock does not operate
  1. Door lock assy
  2. Wire harness
Fault in 2-operation unlock function of driver side door key lock and unlock switch
  1. Door key lock and unlock switch circuit
  2. Power window regulator master switch assy (Door ECU)
  3. Multiplex Network Body ECU
  4. Wire harness
About FixVault