Audio System DTC Troubleshooting: 1702
DTC 1702: XM Antenna Error
NOTE:
Check the vehicle battery condition first.
This audio DTC sets when there is poor connectors or loose terminals at the XM antenna connector or an open in XM antenna lead.
Before you troubleshoot, make sure to follow the General Troubleshooting Information.
Check the connectors for poor connections or loose terminals.
1.
Problem verification:

Problem verification
?1.
Clear the hard error codes.

?2.
Turn the vehicle to the OFF (LOCK) mode then the ON mode.

?3.
Turn on the audio system, and select the XM radio.

?4.
Check for hard error codes.

Is DTC 1702 indicated?

     
YES
     
     
     
The failure is duplicated, go to step 2.
     
NO
     
     
     
Intermittent failure, the system is OK at this time.?
2.
XM antenna check (SAT/TER line):

XM antenna check (SAT/TER line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
XM antenna 2P connector

?3.
Turn the vehicle to the ON mode.

?4.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle ON mode
 
XM antenna 2P connector: disconnected
Test point 1
XM antenna 2P connector No. 1
Test point 2
Body ground


Is there about 5.0 V?

     
YES
     
     
     
     
NO
     
     
     
Go to step 3.
3.
Open wire check (SAT/TER line):

Open wire check (SAT/TER line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Audio unit connector M (2P)

?3.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Audio unit connector M (2P): disconnected
 
XM antenna 2P connector: disconnected
Test point 1
Audio unit connector M (2P) No. 1
Test point 2
XM antenna 2P connector No. 1


Is there continuity?

     
YES
     
     
     
     
NO
     
     
     
Replace the XM antenna lead and/or the XM antenna sublead.?