XM Radio Display is Blank and No Station Information is Displayed
XM radio display is blank and no station information is displayedNOTE:
- Check the vehicle battery condition first.
- Do not do this procedure if the CD changer and navigation display buttons are inoperative. Refer to the navigation system troubleshooting. Symptom Troubleshooting Index
1. Check fuse No. 7 (7.5 A) in the under-dash fuse/relay box.
Is the fuse OK?
YES - Go to step 2.
NO - Replace the fuse, and recheck
2. Turn the ignition switch ON (II).
3. Measure the voltage between XM receiver connector A (14P) No. 1 and No. 7 terminals and body ground.
Is there battery voltage?
YES - Go to step 4.
NO - Repair open in the wire between fuse No. 7 (7.5 A) under-dash fuse/relay box and XM receiver connector A (14P) No. 1 and No. 7 terminals.
4. Measure the voltage between XM receiver connector A (14P) No. 11 terminal and body ground.
Is there less than 0.1 V?
YES-
- With navigation: Go to step 12.
- Without navigation: Go to step 5.
NO - Repair open in the wire between XM receiver connector A (14P) No. 11 terminal and body ground (G50D).
5. Turn the ignition switch ON (II).
6. Measure the voltage between audio unit connector B (14P) No. 2 terminal and body ground.
Is there 10 V or more present?
YES - Go to step 7.
NO - Go to step 9.
7. Measure the voltage between audio unit connector B (14P) No. 2 terminal and body ground.
Is there less than 0.5 V?
YES - Go to step 8.
NO - Substitute a known-good audio unit and recheck. If less than 0.5 V is present, replace the original audio unit.
8. Turn the ignition switch OFF.
9. Disconnect audio unit connector B (14P) and XM receiver connector A (14P).
10. Check for continuity between XM receiver connector A (14P) and body ground according to the table. Then check for continuity between the same terminals listed in the table and XM receiver connector A (14P) No. 3 terminal (the harness shield).
Is there continuity?
YES - Repair short in the wire between the audio unit and the XM receiver, or replace the appropriate shielded harness.
NO - Go to step 11.
11. Check for continuity between XM receiver connector A (14P) and audio unit connector B (14P) according to the table.
Is there continuity?
YES - Substitute a known-good XM receiver, then reconnect all the connectors and recheck. If the symptom/indication goes away, replace the original XM receiver. If symptom/indication is still present, replace the audio unit.
NO - Repair open in the wire between audio unit and XM receiver.
12. Turn the ignition switch ON (II).
13. Measure the voltage between CD changer connector B (14P) No. 2 terminal and body ground.
Is there 10 V or more present?
YES - Go to step 14.
NO - Go to step 20.
14. Measure the voltage between CD changer connector B (14P) No. 2 terminal and body ground.
Is there less than 0.5 V?
YES - Go to step 15.
NO - Substitute a known-good CD changer and recheck. If 0.5 V or less are present, replace the original CD changer.
15. Turn the ignition switch OFF.
16. Disconnect CD changer connector B (14P) and XM receiver connector A (14P).
17. Check for continuity between XM receiver connector A (14P) No. 2 terminal and body ground.
Is there continuity?
YES - Repair short in the wire between the CD changer and the XM receiver, or replace the appropriate shielded harness.
NO - Go to step 18.
18. Check for continuity between XM receiver connector A (14P) Nonterminal and CD changer connector B (14P) No. 2 terminal.
Is there continuity?
YES - Go to step 19.
NO - Repair open in the wire between CD changer and XM receiver.
19. Disconnect the navigation control unit connector B (14P).
20. Check for continuity between XM receiver connector A (14P) and navigation unit connector B (14P) according to the table.
Is there continuity?
YES - Substitute a known-good XM receiver and retest.
NO - Repair open in the wire between the XM receiver and the navigation unit.