Lexus IS250 · Service Manual BODY ELECTRICAL

Voice Recognition Difficulty

Circuit diagnosis

INSPECTION PROCEDURE


1. CHECK CONDITION
  1. Check if the system's voice recognition level is low by using only one particular voice.

    OK:
    System's voice recognition level is low with any voice.

HINT:
If system's voice recognition level varies depending on voice and pronunciation, this is not a malfunction.



NG
END
OK


2. CHECK MAP DISC

  1. I100152E12
    Check that the map disc is not deformed or cracked.

    OK:
    No deformations or cracks on map disc.



NG
REPLACE MAP DISC
OK


3. CHECK MAP DISC

  1. I100201E04
    Check for dirt on the map disc surface.

    OK:
    No dirt is on map disc surface.

    NOTICE:
    Do not use a conventional record cleaner or anti-static preservative.

    HINT:
    If the disc is dirty, clean the disc by wiping the disc surface radially with a soft cloth.



NG
CLEAN MAP DISC
OK


4. CHECK MICROPHONE (NAVIGATION CHECK MODE)

  1. E125118E01
    Enter the "MICROPHONE & VOICE RECOGNITION CHECK" mode (Click here).

  1. When voice is input into the microphone, check that the microphone input level meter changes according to the input voice.

  1. Push the recording switch and perform voice recording.

    HINT:
    Voice can be recorded up to 5 seconds.

  1. Check that the recording indicator remains on while recording and that the recorded voice is played normally without noise or distortion.

    OK:
    All check results are normal.



NG
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
OK

END


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