Error code: XM NO SIGNAL or XM ANTENNA is displayed
- Check the vehicle battery condition first (see BATTERY TEST ).
- Check the connectors for poor connections or loose terminals.
- Check XM radio reception in an open area. Poor reception/interference can be caused by tall buildings, mountains, or high-voltage power lines.
- Check for other error codes (see ERROR CODES ).
- Park the vehicle outside with a clear view of the southern horizon.
- Turn the ignition switch to ON (II).
- Check for other error codes (see ERROR CODES ).
Are there other XM error codes displayed?
YES -Go to error codes (see ERROR CODES ).
NO -Go to step 4.
- Turn on the audio system, and press the XM button to select XM radio.
Does the XM radio receive a signal?
YES -Reception interference operation is normal.
NO -Go to step 5.
- Turn the ignition switch to LOCK (0).
- Check the connection at XM antenna 2P connector and XM receiver connector B (2P).
- Measure voltage between body ground and XM receiver connector A (14P) terminals the No. 1 and No. 7 individually.
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Is there battery voltage?
YES -Go to step 8.
NO -Repair open in the wire between the No. 7 (7.5 A) fuse in the under-dash fuse/relay box and XM receiver connector A (14P) terminals No. 1 and No. 7. ■
- Turn the ignition switch to ON (II).
- Measure voltage between XM receiver connector A (14P) terminal No. 2 and body ground.
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Is there battery voltage?
YES -Go to step 10.
NO -
- With navigation: Repair an open in the wire between the XM receiver and the audio disc changer.
- Without navigation: Repair an open in the wire between the XM receiver and the audio unit.
- Measure the voltage between XM receiver connector A (14P) terminal No. 11 and body ground.
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Is there less than 0.2 V?
YES -Go to step 11.
NO -Repair open in the wire between XM receiver connector A (14P) terminal No. 11 and body ground (G501) (see FLOOR WIRE HARNESS (RIGHT BRANCH) ). ■
- Turn the ignition switch to LOCK (0).
- Substitute a known-good XM antenna (see XM ANTENNA REPLACEMENT ).
Does the XM radio receive a signal?
YES -Replace the original XM antenna (see XM ANTENNA REPLACEMENT ). ■
NO -Substitute known-good XM antenna subharness. If the XM radio receives signal, replace the original XM antenna subharness. If the XM radio does not receive a signal, substitute a known-good XM receiver unit (see XM RECEIVER REMOVAL/INSTALLATION ). ■