| 1 | CHECK AUDIO VOLUME | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check the speaker is not crossed out on the icon in the NAV screen | Move on to Step 2 | Voice command audio volume (set to OFF), with the speaker icon crossed out | Press the NAV key once (less than 2 seconds) and enable the audio |
| 2 | CHECK AUDIO MESSAGES | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Press the NAV button on the navigation system front panel to listen to the voice commands.Check for audio signals | Move on to Step 3 | The radio lowers the volume and the voice command cannot be heard | In the NAV screen, adjust the voice command volume |
| 3 | CONNECTIONS CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check the correct connection between the NAV module and speaker for playing the audio signal. See the wiring diagram See E3510 RADIO | Move on to Step 4 | 1. Connections not correct | 1. Restore correct power supply, see wiring diagram See E4090 INSTRUMENT PANEL AND INDICATORS |
| 2. Front speaker defective | 2. Replace the speaker Op. 5570T90 FRONT SPEAKER (ONE), LEFT OR RIGHT - R.R |
| 3. Front speaker defective | 3. Replace the speakerOp. 5570T98 |
| 4 | CHECK NAVIGATION SYSTEM OPERATION | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check the navigation device is working properly | Fault persists | Navigation device defective | Replace Connect Op. 5580P12 CONNECT PANEL REPLACE |
