Circuit/System Testing
WARNING: This page is about a different car, the 2008 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the antenna coax from the DRR. Connect the EL-48028 to the DRR.
- Radio ON, tuned to XM, verify DTC B1259 is not set as current.
- If the DTC is current, replace the DRR.
- Ignition OFF, disconnect the digital radio antenna coax from the digital radio antenna.
- Ignition ON, test for less than 1 volt between the antenna coax center terminal and ground.
- If greater than the specified range, replace the antenna coax.
- Test for infinite resistance between the antenna coax center terminal and ground.
- If less than the specified value, replace the antenna coax.
- Test for less than 5 ohms of resistance on the antenna coax center circuit from end to end.
- If greater than the specified range, replace the antenna coax.
- Test for infinite resistance between the coax center terminal and the outer shield.
- If less than the specified value, replace the antenna coax.
- If all circuits test normal, test or replace the digital radio antenna.