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.

1. Turn on the audio unit and check the audio information on the display panel.

Does the audio information display properly?
YES - Go to step 2.

NO - Go to power switch will not turn ON. [1][2]Audio Unit Power Switch Will Not Turn On (No Information Display and No Sound)


2. Operate the tuning knob to see if the radio station changes.

Does the radio station change?
YES - Intermittent failure: the tuning knob is OK at this time. Check for loose or poor connections.

NO - Replace the audio unit. Service and Repair