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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 475 (LEXUS Link System - Diagnosis) >> Circuit Inspection >> The Guidance Voice Of "System Message" Does Not Come Out When Ignition Switch Is Turned On, The Guidance Voice Of "System Message" Intermittently Stop When Ignition Switch Is Turned On, The Guidance Voice Of "System Message" Begins In The Middle When Ignition Switch Is Turned On >> Inspection Procedure

Inspection Procedure

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.
  1. Confirm problem symptoms. 

    CHECK: 

    Confirm problem symptoms.

    RESULT: 

    A: The guidance voice of "System Message" does not come out. 

    B: The guidance voice of "System Message"intermittently stop or begins in the middle. 

    1. B: Check and replace telephone ECU (Mayday ECU) (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
    2. A: Go to next step. 
  2. Check rear speaker (LH). 

    CHECK: 

    Check that sound is heard from rear speaker (LH) when radio switch is ON.

    OK: 

    Radio sound is heard from rear speaker (LH). 

    1. NG : Go to "AUDIO SYSTEM" (See  PROBLEM SYMPTOMS TABLE  .) 
    2. OK : Check and replace telephone ECU (Mayday ECU) (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
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