Circuit/System Testing

WARNING: This page is about a different car, the 2018 Buick Regal TourX and 2018 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

Hatchback Active Antenna

Ignition OFF, disconnect the radio antenna coax cable from the A11 radio and from the T23L Radio Antenna Amplifier.
Verify the antenna coax cable passes the coax cable component test. Refer to Component Testing .
- If the coax cable does not pass the test.
  Replace the antenna coax cable.
- Go to next step: If the coax cable passes the test.
Connect the antenna coax cable to the A11 radio. Ignition ON, A11 radio ON.
Verify a test lamp illuminates between the antenna coax cable center terminal and ground at the T23L Radio Antenna Amplifier connector.
- If the test lamp does not illuminate.
  Replace the A11 radio.
- Go to next step: If the test lamp illuminates.
Test or replace the T23L Radio Antenna Amplifier.

Wagon Spoiler Antenna

Ignition OFF, disconnect the radio antenna coax cable from the A11 radio and from the T23R Radio Antenna Amplifier.
Verify the antenna coax cable passes the coax cable component test. Refer to Component Testing .
- If the coax cable does not pass the test.
  Replace the antenna coax cable.
- Go to next step: If the coax cable passes the test.
Connect the antenna coax cable to the A11 radio. Ignition ON, A11 radio ON.
Verify a test lamp illuminates between the antenna coax cable center terminal and ground at the T23R Radio Antenna Amplifier connector.
- If the test lamp does not illuminate.
  Replace the A11 radio.
- Go to next step: If the test lamp illuminates.
Test or replace the T23R Radio Antenna Amplifier.