Poor Or No Sound With XM Radio (Audio Unit Does Display XM channels) (With Navigation)

Audio System Symptom Troubleshooting - Poor or no sound with XM radio (Audio unit does display XM channels)

Poor or no sound with XM radio (Audio unit does display XM channels) (with navigation)

NOTE:

- Check the vehicle battery condition first Battery Test.
- Check the connectors for poor connections or loose terminals.
- Check the radio reception in an open area. Compare it to a known-good vehicle whenever possible. Poor reception/interference can be caused by tall buildings, mountains, or high-voltage power lines that are nearby.
- If you can only tune to channel 000, 001, 174, and 247, make sure that the audio unit is set to the channel mode (see the Owner's Manual), if it is set to the channel mode, call XM Radio customer support and check the account activation status.

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

2. Turn on the audio system, and select XM radio.

3. Check for an error message on the display.

Are there any messages displayed?

YES -

Go to Error Codes Audio System Error Codes.

NO -

Go to step 4.

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

5. Disconnect these items:

- Audio-navigation unit connector D (14P)
- XM receiver connector A (14P)
- HandsFreeLink control unit 32P connector
- Navigation display unit 32P connector

6. Check for continuity between XM receiver connector A (14P) and body ground according to the table.









Is there continuity?

YES -

There is a short in the wire(s) between the audio-navigation unit and the XM receiver. Replace the affected shielded harness.

NO -

Go to step 7.

7. Check for continuity between XM receiver connector A (14P) and audio-navigation unit connector D (14P) according to the table.













Is there continuity?

YES -

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. If the symptom/indication is still present, replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.

NO -

There is an open in the wire(s) between the audio-navigation unit and the XM receiver. Replace the affected shielded harness.