Navigation System - Voice Recognition Inoperative

Navigation System - Voice Recognition Inoperative

Circuit/System Testing

1. Verify the OnStar(R) voice recognition is operating normally.

• If the OnStar(R) voice recognition is inoperative, refer to Voice Recognition Inoperative or Microphone Inoperative - Caller Cannot Be Heard. Voice Recognition Inoperative Microphone Inoperative - Caller Cannot Be Heard

• Disconnect the radio harness connector. While holding the voice recognition button down, measure for 600 ohm to 800 ohm across the steering wheel control signal terminal (11) and the steering wheel control supply voltage terminal (10).

• If ohms are below or above the specified value, replace the steering wheel voice recognition switch.

2. Test the audio mic in circuits for an open, short to ground or a short to power. If all circuits test normal replace the radio.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

* Steering Wheel Control Switch Assembly Replacement
* Refer to Programming and Relearning.Programming and Relearning
* Mobile Telephone Microphone Replacement