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Circuit/System Testing

WARNING: This page is about a different car, the 2012 Chevrolet Sonic. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

Before testing, inspect the antenna coax cable for damage or poor connections.

  1. Ignition OFF, disconnect the radio antenna coax cable from the A11 radio.
  2. Ignition ON, test for B+ between the coax cable connection center conductor at the A11 radio and ground.
    • If not the specified value, replace the A11 radio.
  3. Ignition OFF, reconnect the antenna coax cable at the A11 radio. Disconnect the antenna coax cable from the T4M antenna.
  4. Ignition ON, test for B+ between the coax cable center conductor and the coax cable outer shield.
    • If less than the specified value, replace the coax cable
  5. If all circuits test normal, replace the T4M antenna.
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