Pinpoint Test L : Voice recognition does not function.

Check to see if the audio sound is muted when the PTT switch is depressed.

Is the audio sound muted? 

YES:  Go to step  3.

NO:  Go to step  2.

Check to see if the PTT switch status is ok in the navigation diagnostics, manual check, microphone test.

Is the PTT switch status, in navigation diagnostics, ok? 

YES:  Check MOST connection at the Touch Screen Display (TSD), check the MOST devices.

NO:  Replace the MOST master, or the gateway module.

Check to see if there is talk back when other voice recognition demands are executed.

Is there talk back? 

YES:  System operation is normal, (advise change in manner of speech, as incorrect recognition is occurring).

NO:  Go to step  4.

Refer to the electrical circuit diagrams and check integrity of Touch Screen Display (TSD) harness and connections.

Has a fault been identified with the Touch Screen Display (TSD) harness or connections? 

YES:  Rectify the fault and re-test the vehicle.

NO:  Check and install a new Touch Screen Display (TSD) as required. Refer to the new module/component installation note at top of DTC Index.