2003 Lexus LS 430FACTORY OEM SERVICE PROCEDURE

Front Passenger Door Control System

WARNING: This page is about a different car, the 2002 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
SYMPTOM INDEX (POWER WINDOW CONTROL SYSTEM)

Symptom Perform Test
Front Passenger Door Power Window Does Not Operate TEST NO. 68Β 
Front Passenger Door Power Window Glass Does Not Move TEST NO. 69Β 
SYMPTOM INDEX (POWER DOOR LOCK CONTROL SYSTEM)

Symptom Perform Test
Power Door Lock System Does Not Operate At All TEST NO. 70Β 
Power Door Lock System Does Not Operate When Using Manual Switch TEST NO. 71Β 
Power Door Lock System Does Not Operate When Using Key In External Door Lock Cylinder TEST NO. 72Β 
Driver Door Two-Operation Unlock Function Does Not Operate TEST NO. 73Β 
Key Confinement Prevention Function Does Not Operate TEST NO. 74Β 
Only One Power Door Lock Does Not Operate TEST NO. 75Β 
Automatic Door Lock/Unlock System Does Not Operate TEST NO. 76Β 
SYMPTOM INDEX (POWER MIRROR CONTROL SYSTEM) (1)

Symptom Perform Test
Power Mirror Does Not Operate (2)
Power Mirror Operates Abnormally (2)
(1) Power mirrors for models equipped with driving position memory system are monitored by power seat ECU with information being shared with driver door ECU and/or front passenger door ECU. For models without driving position memory system, see POWER MIRRORS - AVALON article.
(2) See POWER SEATS - AVALON article.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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