Circuit/System Testing

Ignition OFF, disconnect the radio antenna coax cable from the A11 Radio and from the T2RR Antenna - Roof Rear.
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 radio antenna coax cable to the A11 Radio.
Ignition ON, A11 Radio ON.
Verify a test lamp illuminates between the antenna coax cable center terminal at the T2RR Antenna - Roof Rear and chassis ground.
- If the test lamp does not illuminate
  Replace the A11 Radio.
- Go to next step: If the test lamp illuminates
Test or replace the T2RR Antenna - Roof Rear.