XM Radio Display is Blank and No Station Information is Displayed

XM radio display is blank and no station information is displayed

NOTE: Check the vehicle battery condition first.

1. Measure the voltage between XM receiver connector A (14P) No.1 and No.7 terminal and body ground.






Is there battery voltage?

YES - Go to step 2.

NO - Repair open in the wire between No.9 (10 A) fuse in the under-hood fuse/relay box and XM receiver connector A (14P) No.1 terminal.

2. Turn the ignition switch ON (II).
3. Measure the voltage between XM receiver connector A (14P) No.11 terminal and body ground.






Is there less than 0.1 V?

YES - Go to step 4.

NO - Repair open in the wire between the XM receiver connector A (14P) No.11 terminal and body ground (G551).

4. Turn the ignition switch OFF.
5. Measure the voltage between XM receiver connector A (14P) No.2 terminal and body ground.






Is there 10 V or more present?

YES - Go to step 6.

NO - Substitute a known-good XM receiver and recheck. If 10 V or more are present, replace the original XM receiver.

6. Turn the ignition switch ON (II).
7. Measure the voltage between the audio unit connector D (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 0.5 V or less are present, replace the original audio unit.

8. Turn the ignition switch OFF.
9. Remove the audio unit, and disconnect audio unit connector D (14P).

NOTE: Eject all the CDs before remove the audio unit to prevent damaging the CD player's load mechanism.

10. Disconnect XM receiver connector A (14P).
11. Check for continuity between audio unit connector D (14P) and body ground according to the table.






Is there continuity?

YES - Short to body ground in the wire(s) between the audio unit and the XM receiver. Replace the affected shielded harness.

NO - Go to step 12.

12. Check for continuity between the audio unit connector D (14P) according to the table.






Is there continuity between any of the terminals?

YES - Short in the wire(s) between the audio unit and the XM receiver. Replace the affected shielded harness.

NO - Go to step 13.

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






Is there continuity?

YES - Substitute a known-good XM receiver, then reconnect the 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 - Open in the wire(s) between the audio unit and XM receiver. Replace the affected shielded harness.