Radio Preset Memory Is Lost
Radio preset memory is lostNOTE: If only XM stations are lost, Go to XM radio preset memory is lost.
1. Set each of the radio station preset buttons.
Do each of the preset buttons set properly?
YES - Go to step 2.
NO - Go to step 4.
2. Turn the ignition switch OFF for 1 minute, then turn it back to ON (II).
3. Test all 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 - Go to step 4.
4. Inspect the No. 6 (10 A) fuse in the under-dash fuse/relay box.
Is it OK?
YES - Go to step 5.
NO - Replace the fuse and reset. If it fails again, repair the short to ground in the harness.
5. Remove the audio-HVAC display module.
6. Disconnect the audio unit connector A (20P).
7. Turn the ignition switch ON (II).
8. Measure the voltage between the audio unit connector A (20P) terminal No. 10 and body ground.
Is there battery voltage?
YES - Go to step 9.
NO - Repair open in the wire between the under-dash fuse/relay box and audio unit A10 terminal.
9. Reconnect the audio unit connector A (20P).
10. Measure the voltage between the audio unit connector A (20P) terminal No. 20 and body ground.
Is there less than 0.1 V?
YES - Replace the audio unit.
NO - Repair open in the wire between the audio unit connector A in the (20P) terminal No. 20 and body ground (G504).