Diesel Data: Automotive Repair

Symptom Troubleshooting




Symptom Troubleshooting: Radio tuner does not change stations

Radio tuner does not change stations

NOTE:

- Check the vehicle battery condition first.

- Check the connectors for poor connections or loose terminals.

- On vehicles with navigation, the audio button operation can be checked by doing the hard key status test in the audio-navigation unit check screen See the navigation system diagnostic mode.. Navigation System Diagnostic Mode (With Navigation)

1. Turn the ignition switch to ON (II).

2. Turn on the audio unit or audio-navigation unit, and check the audio information on the display panel.

Does the audio information display properly?
YES - Go to step 3.

NO - Go to audio unit power switch will not turn on (no information display and no sound)

- with navigation. Symptom Troubleshooting

- without navigation. Symptom Troubleshooting



3. Change the radio station using the tuning knob.

Does the radio station change?
YES - Intermittent failure: the tuning knob is OK at this time.

NO -
- With navigation: Replace audio-navigation unit. Audio-Navigation Unit Removal/Installation (With Navigation)

- Without navigation: Replace audio unit. Audio Unit Removal/Installation (Without Navigation)