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Problem Symptoms Table

WARNING: This page is about a different car, the 2004 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.

POWER DOOR LOCK CONTROL SYSTEM: 

POWER DOOR LOCK CONTROL SYSTEM SYMPTOM TABLE

Symptom Suspect Area Action
All the doors cannot be locked or unlocked.
  1. Power source circuit
  2. Theft deterrent ECU
  3. Power window master switch
  1. POWER SOURCE CIRCUIT 
  2. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
  3. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Driver side door lock does not operate.
  1. Door lock motor circuit
  2. Power window master switch
  3. Theft deterrent ECU
  1. DOOR LOCK MOTOR CIRCUIT 
  2. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
  3. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Door key related function cannot be done.
  1. Door lock switch circuit
  2. Door courtesy light and courtesy switch circuit
  3. Theft deterrent ECU
  4. Power window master switch
  1. DOOR KEY LOCK AND UNLOCK SWITCH CIRCUIT 
  2. DOOR COURTESY SWITCH CIRCUIT
  3. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
  4. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Key confinement prevention function does not operate.
  1. Door courtesy light and courtesy switch circuit
  2. Door unlock detection switch circuit
  3. Theft deterrent ECU
  4. Power window master switch
  1. DOOR COURTESY SWITCH CIRCUIT
  2. DOOR UNLOCK DETECTION SWITCH CIRCUIT 
  3. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
  4. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE

POWER WINDOW CONTROL SYSTEM: 

POWER WINDOW CONTROL SYSTEM SYMPTOM TABLE

Symptom Suspect Area Action
All the power window does not operate.
  1. Power source circuit
  2. Power window switch circuit
  3. Power window master switch
  1. POWER SOURCE CIRCUIT 
  2. CIRCUIT INSPECTION 
  3. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Driver side power window does not operate.
  1. Power window motor circuit
  2. Power window master switch
  1. POWER WINDOW MOTOR CIRCUIT ON DRIVER DOOR 
  2. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Jam protection function and auto up or down function does not operate.
  1. Jam protection limit switch circuit
  2. Jam protection pulse switch circuit
  3. Power window master switch
  4. Theft deterrent ECU
  1. DTC B1231: JAM PROTECTION LIMIT SWITCH CIRCUIT ON DRIVER DOOR 
  2. DTC B1232: JAM PROTECTION PULSE SWITCH CIRCUIT ON DRIVER DOOR 
  3. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
  4. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Window lock function does not operate.
  1. Power window switch circuit
  2. Power window master switch
  1. CIRCUIT INSPECTION 
  2. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Remote control of all windows (Except driver side) does not operate with master switch. (Window operates normally with each of master switch.)
  1. Power window switch circuit
  2. Power window master switch
  1. CIRCUIT INSPECTION 
  2. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
The key related power window operations cannot be done with driver door key cylinder. (Master switch operation is normal.)
  1. Door key lock and unlock switch circuit
  2. Inspect door lock control system
  3. Power window switch circuit
  4. Power window master switch
  1. DOOR KEY LOCK AND UNLOCK SWITCH CIRCUIT 
  2. INSPECTION
  3. CIRCUIT INSPECTION 
  4. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Power window does not operate with keyless entry transmitter. (Windows operate normally with master switch.)
  1. Inspect wireless door lock control system
  2. Replace Power window master switch
  3. Theft deterrent ECU
  1. INSPECTION
  2. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
  3. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Window moves down without being ordered during the up operation.
  1. Jam protection limit switch circuit
  2. Power window motor circuit
  3. Is the window regulator installed correctly?
  4. Power window master switch
  1. DTC B1231: JAM PROTECTION LIMIT SWITCH CIRCUIT ON DRIVER DOOR 
  2. POWER WINDOW MOTOR CIRCUIT ON FRONT RH DOOR , POWER WINDOW MOTOR CIRCUIT ON REAR LEFT DOOR , POWER WINDOW MOTOR CIRCUIT ON REAR RIGHT DOOR 
  4. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
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