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Circuit/System Testing

WARNING: This page is about a different car, the 2015 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the digital radio antenna coax cable from the A11 radio. Connect the EL-48028  digital radio test antenna to the radio and place on the roof of the vehicle.
  2. Ignition ON, radio tuned to digital station.
  3. Verify DTC B125C is not set as current and digital reception is improved.
    • If DTC B125C is set as current or digital reception is not improved 

      Replace the A11 radio.

    • If DTC B125C is not set as current and digital reception is improved 
  4. Ignition OFF, disconnect the digital radio antenna coax cable from the T4D cellular phone, navigation and digital radio antenna.
  5. 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 
  6. Replace the T4D cellular phone, navigation and digital radio antenna.