Circuit/System Testing

Ignition OFF, disconnect the digital radio antenna coax cable from the T23 Radio Antenna Amplifier and the A11 Radio.
Verify the digital radio 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
Replace the T23 Radio Antenna Amplifier.
Ignition ON, A11 radio ON, tune to digital band.
Verify DTC B125E is not set as current and digital reception is improved.
- If DTC B125E is set as current or digital reception is improved
  Replace the A11 Radio.
- If DTC B125E is not set as current and digital reception is improved
All OK.