Symptom Troubleshooting

Audio System Symptom Troubleshooting - Radio preset memory is lost

Radio preset memory is lost

NOTE:

- Check the vehicle battery condition first Testing and Inspection.
- Check the connectors for poor connections or loose terminals.
- If only XM stations are lost, go to XM radio preset memory is lost troubleshooting XM Radio Preset Memory Is Lost.

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

2. Turn on the audio unit and set each of the radio station preset buttons.

Does each preset button set properly?

YES -

Go to step 4.

NO -

Go to step 3.

3. Measure the voltage between audio unit connector A (24P) terminal No. 24 and body ground.





Is there battery voltage?

YES -

Go to step 4.

NO -

Repair an open in the wire between the No. 5 (20 A) fuse in the under-dash fuse/relay box and audio unit connector A (24P) terminal No. 24.�

4. Turn the ignition switch to LOCK (0) for 1 minute, then turn it back to ON (II).

5. Test the preset buttons for proper recall operation.

Do the preset buttons recall the set radio stations?

YES -

System is normal at this time. Check connections at the audio unit.�

NO -

Substitute a known good audio unit Audio Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio unit Audio Unit Removal/Installation.�