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When the speech switch is pushed, if the voice guide is sent but voice recognition is not executed, the microphone unit, hands free-ECU or the communication between the microphone unit and hands free-ECU may have a problem. It may also be possible that the voice recognition is interfered by external noise.
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- The hands free-ECU may be defective.
- The microphone unit may be defective.
- Damaged harness wires and connectors
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Close all the windows to suppress external noise as much as possible. Then check whether the voice recognition operates normally when you utter a word as close to the microphone unit as possible
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Q.
Is the check result normal?
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Check if the microphone check result "HFM MIC Check" is displayed on the diagnosis mode of hands free-ECU. (Refer to <Vehicles with 1CD audio>, <Vehicles with display audio> or <Vehicles with MMCS>.)
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Q.
Is the check result normal?
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Q.
Is the check result normal?
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The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).
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Repair the connector(s) or wiring harness.
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Q.
Is the check result normal?
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Replace the microphone unit.
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Q.
Is the check result normal?
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Replace the hands free-ECU.
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The trouble can be an intermittent malfunction (Refer to GROUP 00, How to use Troubleshooting/inspection Service Points, How to Cope with Intermittent Malfunction ).
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