Radio Tuner Does Not Change Stations

Symptom Troubleshooting: Radio tuner does not change stations

Radio tuner does not change stations

NOTE:

- Check the vehicle battery condition first. Testing and Inspection

- Check the connectors for poor connection or loose terminals.

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

2. Turn on the audio 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. Audio Unit Power Switch Will Not Turn On (No Information Display and No Sound)


3. 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.

NO -
- With ELS audio system: Go to step 4.

- With premium audio system: Substitute a known-good audio unit, Audio Unit Removal/Installation (With Premium Audio System) and recheck. If the symptom/indication goes away, replace the original audio unit.



4. Turn the ignition switch to LOCK (0).

5. Disconnect the audio-navigation switch panel 24P connector and audio unit connector C (12P).

6. Check for continuity between audio unit connector C (12P) and the audio-navigation switch panel 24P connector according to the table.





Is there continuity?
YES - Go to step 7.

NO - There is an open in the wire(s) between the audio unit and the audio-navigation switch panel. Replace the affected shielded harness.






7. Check for continuity between the audio-navigation switch panel 24P connector and body ground according to the table. Then check for continuity between the same terminals listed in the table and audio unit connector C (12P) terminal No. 4.





Is there continuity?
YES - There is a short to body ground in the wire(s) between audio unit and audio-navigation switch panel. Replace the affected shielded harness.

NO - Go to step 8.






8. Check for continuity between audio-navigation switch panel 24P connector terminals No. 6 and No. 18.

Is there continuity?
YES - There is a short in the wire(s) between the audio unit and the audio-navigation switch panel. Replace the affected shielded harness.

NO - Substitute a known-good audio unit, Audio Unit Removal/Installation (With AcuraLink) and recheck. If the symptom/indication goes away, replace the original audio unit. If the symptom is still present, substitute a known-good audio-navigation switch panel, Audio-Navigation Switch Panel Removal/Installation (With Navigation) and recheck. If the symptom/indication goes away, replace the original audio-navigation switch panel.