XM Radio Preset Memory Is Lost
XM Radio preset memory is lost1. Turn the ignition switch ON (II).
2. Turn on the audio unit and set each of the XM radio channel preset buttons.
Do each of the XM radio channel preset buttons set properly?
YES - Go to step 3.
NO - Go to step 5.
3. Turn the ignition switch to LOCK (0) for 1 minute, then turn it back to ON (II).
4. Test all of the XM radio channel 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 - Go to step 5.
5. Turn the ignition switch to LOCK (0).
6. Disconnect the XM receiver connector A (14P).
7. Turn the ignition switch ON (II).
8. Measure the voltage between the XM receiver connector A (14P) terminal No. 1 and body ground.
Is there battery voltage?
YES - Go to step 9.
NO - '05 model: Repair open in the wire between the under-dash fuse/relay box and XM receiver connector A (14P) terminal No. 1.
'06-08 models: Repair open in the wire between the audio unit connector B (14P) terminal No. 1 and XM receiver connector A (14P) terminal No. 1.
9. Turn the ignition switch to LOCK (0).
10. Reconnect the XM receiver connector A (14P).
11. Turn the ignition switch ON (II).
12. Measure the voltage between the XM receiver connector A (14P) terminal No. 11 and body ground.
Is there less than 0.1 V?
YES - Check the pinfit at the XM receiver connector A11 terminal. If the connection is OK, substitute a known-good XM receiver, then reconnect all connectors and recheck. If the symptom/indication goes away, replace the original XM receiver. If the symptom/indication is still present, replace the audio unit.
NO - Go to step 13.
13. Turn the ignition switch to LOCK (0).
14. Disconnect the XM receiver connector A (14P) and the audio unit connector B (14P).
15. Check for continuity between the XM receiver unit connector A (14P) terminal No. 11 and the audio unit connector B (14P) terminal No. 11.
Is there continuity?
YES - Check the pinfit at the audio unit connector B (14P) terminal No. 11. If the connection is OK, substitute a known-good XM receiver, then reconnect all connectors and recheck. If the symptom/indication goes away, replace the original XM receiver. If the symptom/indication is still present, replace the audio unit.
NO - Repair open in the wire between the XM receiver connector A (14P) terminal No. 11 and the audio connector B (14P) terminal No. 11.