Circuit/System Testing
- Ignition OFF, disconnect the radio antenna coax cable from the A11 Radio and from the T4G Cellular Phone, Navigation, and Digital Radio Antenna.
- 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
- If the coax cable passes the test
- If the coax cable does not pass 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 and ground at the T4G Cellular Phone, Navigation, and Digital Radio Antenna.
- If the test lamp does not illuminate
replace the A11 Radio.
- If the test lamp illuminates
- If the test lamp does not illuminate
- Test or replace the T4G Cellular Phone, Navigation, and Digital Radio Antenna.