Circuit/System Testing
WARNING: This page is about a different car, the 2008 Cadillac XLR. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
- Ensure the vehicle is outside in an area with an unobstructed view of the southern sky. Turn XM radio ON. Tune the radio to satellite channel 1. XM reception should be clear.
- Contact XM radio services at 1-800-852-9696 to verify the customers account status or possible network problems.
- Ignition OFF, disconnect the appropriate antenna coax harness connector at the DRR.
- Connect the EL-48028 to the DRR and place it on the roof of the vehicle. See Special Tools .
- Ignition ON, radio tuned to XM, verify XM reception has improved and DTC B125A/B is not current.
- If the XM reception has not improved and DTC B125A/B is still current, replace the DRR.
- Ignition OFF, disconnect the antenna coaxial cable from the DRR antenna base.
- Test for less than 5 ohms between the two ends of the coax cable center conductor.
- If greater than the specified range, replace the antenna coax cable.
- Test for less than 5 ohms between the two ends of the coax cable outer shield.
- If greater than the specified range, replace the antenna coax able.
- Test for infinite resistance between the antenna coax center conductor and the outer shield.
- If less than the specified range, replace the antenna coax cable.
- If all circuits test normal, replace the digital radio antenna.