B1259

DTC B1259

CIRCUIT DESCRIPTION
The digital radio antenna is connected to the digital radio receiver by 2 coax cables. One coax carries the satellite signal, the other coax carries the terrestrial signal. The antenna cable for the satellite antenna also provides a path for DC current for powering the antenna.

CONDITIONS FOR RUNNING THE DTC
This test is run every 300 milliseconds.

CONDITIONS FOR SETTING THE DTC
The digital radio receiver detects an antenna fault.

ACTION TAKEN WHEN THE DTC SETS
The radio displays "No XM Signal."

CONDITIONS FOR CLEARING THE DTC
The condition must be corrected.

TEST DESCRIPTION

Steps 1 - 10:

The number below refers to the step number on the diagnostic table.
3. Due to current limiting capabilities in the module, an antenna cable shorted to ground could still show 1200-1800 mV.