Radio Tuner Does Not Change Stations (Without Navigation)

Audio System Symptom Troubleshooting - Radio tuner does not change stations

Radio tuner does not change stations (without navigation)

NOTE:

- Check the vehicle battery condition first Battery Test.
- Check the connectors for poor connection or loose terminals.

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

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 (No information display and no sound) troubleshooting Audio Unit Power Switch Will Not Turn On (No Information Display And No Sound) (Without Navigation).

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 -

Go to step 4.

4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

5. Disconnect audio and HVAC switch panel connector A (20P) and audio unit connector F (12P).

6. Check for continuity between audio unit connector F (12P) and audio and HVAC switch panel connector A (20P) 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 and HVAC switch panel. Replace the affected shielded harness.

7. Check for continuity between audio and HVAC switch panel connector A (20P) and body ground according to the table.









Is there continuity?

YES -

There is a short to body ground in the wire(s) between the audio unit and the audio and HVAC switch panel. Replace the affected shielded harness.

NO -

Go to step 8.

8. Check for continuity between the terminals of audio unit connector F (12P) according to the table.









Is there continuity between any of the terminals?

YES -

There is a short in the wires between the audio unit and the audio and HVAC switch panel. Replace the affected shielded harness.

NO -

Substitute a known-good audio and HVAC switch panel Audio and HVAC Switch Panel Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio and HVAC switch panel Audio and HVAC Switch Panel Removal/Installation. If the symptom/indication is still present, replace the audio unit Audio Unit Removal / Installation.