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Circuit/System Testing

  1. Ignition OFF/Vehicle OFF, disconnect the radio antenna coax cable from the A11 Radio and from the T23 Radio Antenna Amplifier.
  2. 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 
  3. Connect the antenna coax cable to the A11 Radio. Ignition ON/Vehicle in Service Mode, A11 Radio ON.
  4. Verify a test lamp illuminates between the antenna coax cable center terminal and ground at the T23 Radio Antenna Amplifier connector.
    • If the test lamp does not illuminate 

      Replace the A11 Radio.

    • Go to next step: If the test lamp illuminates 
  5. Test or replace the T23 Radio Antenna Amplifier.
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