XM Radio Preset Memory Is Lost (With Navigation)

Audio System Symptom Troubleshooting - XM radio preset memory is lost

XM radio preset memory is lost (with navigation)

NOTE:

- Check the vehicle battery condition first Battery Test.
- Check the connectors for poor connections or loose terminals.
- If you can only tune to channel 000, 001, 174, and 247, make sure the audio unit is set to channel mode (see owners manual), if it is set to channel mode, call XM Satellite Radio customer support and check the account activation status.

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

2. Turn on the audio system, and set each of the XM radio channel preset buttons.

Does each of the XM radio channel preset buttons set properly?

YES -

Go to step 3.

NO -

Substitute a known-good XM receiver XM Receiver Removal/Installation, and recheck. If the symptom/indication goes away, replace the original XM receiver XM Receiver Removal/Installation.

3. Turn the ignition switch to LOCK (0) for 1 minute, and then back to ON (II).

4. Test all of the XM radio channel preset buttons for proper recall operation.

Do the preset buttons recall the XM radio stations?

YES -

Intermittent failure, the system is normal at this time. Check connections at the audio-navigation unit.

NO -

Go to step 5.

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

6. Measure the voltage between XM receiver connector A (14P) terminal No. 1 and body ground.





Is there battery voltage?

YES -

Go to step 8.

NO -

Go to step 7.

7. Measure the voltage between audio-navigation unit connector C (14P) terminal No. 1 and body ground.





Is there battery voltage?

YES -

Repair an open or high resistance in the wire between the XM receiver and the audio-navigation unit.

NO -

Substitute a known-good audio-navigation unit (including the HDD) Audio-Navigation Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio-navigation unit Audio-Navigation Unit Removal/Installation.

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

9. Measure the voltage between XM receiver connector A (14P) terminal No. 11 and body ground.





Is there less than 0.2 V?

YES -

Substitute a known-good audio-navigation unit (including the HDD) Audio-Navigation Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio-navigation unit Audio-Navigation Unit Removal/Installation.

NO -

Repair an open in the wire between the XM receiver and the audio-navigation unit.