Wireless Door Lock Control System:
WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
WIRELESS DOOR LOCK CONTROL SYSTEM
| Symptom | Suspect Area | See Section |
|---|---|---|
| All functions of wireless door lock control system do not operate. |
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| Lock or unlock does not operate. | Door unlock detection switch circuit
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| Door key lock and unlock switch circuit | DTC B1221 POWER WINDOW SWITCH CIRCUIT ON DRIVER, DTC B1222 DOOR LOCK SWITCH CIRCUIT ON DRIVER DOOR | |
| Power source circuit | POWER SOURCE CIRCUIT | |
| Any door ECU | HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE | |
| Theft deterrent ECU | HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE | |
| Automatic lock function operate even if any door is opened within 30 second after doors are unlocked. | Door courtesy switch circuit
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| Any door ECU | HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE | |
| Theft deterrent ECU | HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE | |
| Wireless door lock operates, but the buzzer does not sound. | Wireless door lock buzzer volume circuit | WIRELESS BUZZER VOLUME AND ON/OFF SWITCH CIRCUIT |
| Wireless door lock buzzer circuit | WIRELESS DOOR LOCK BUZZER CIRCUIT | |
Door unlock detection switch circuit
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| Any door ECU | HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE | |
| Theft deterrent ECU | HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE | |
| Buzzer sound, but door lock function does not operate. | Theft deterrent ECU | HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE |
| Luggage compartment door does not open. |
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