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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 413 (Wireless Door Lock - Diagnosis) >> No ANSWERBACK (Hazard Lamp And Buzzer) >> Function Description

Function Description

WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.

When there is no answer back in spite that the wireless door lock and unlock function is operating, there might be abnormality in the outputs of the hazard lamp signal from the theft warning ECU and also in the outputs of the wireless buzzer.

NOTE:
  • Wireless door lock system has a function with a large-scale body multiplex communications. First of all, inspect the communication function depending on HOW TO PROCEED WITH TROUBLESHOOTING, and check that there is no abnormality in the communication system. Then finally proceed with the troubleshooting.
  • Troubleshooting should be started after the confirmation that the hazard answer back function is customized and the buzzer controller switch is not in the OFF position.
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