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Home >> Cadillac >> 2007 >> CTS Base, 3.6 7, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 215 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> DTC B1283-B1286 >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2007 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
  1. With the TV function OFF, disconnect the 4 TV coaxial cables at the TV antenna amplifier.
  2. With the TV function ON wait 20 seconds, test for greater than 1 volt at each of the 4 TV coax cable center conductors.
    • If 1TV coaxial cable center connector is less than 1 volt, replace the suspect TV antenna coaxial cable.
    • If all 4 TV coaxial cable center connectors are less than 1 volt, see Component Testing (Coaxial Cables - TV Antenna Module to TV Antenna Amplifier).
  3. With the TV function OFF, reconnect the 4 TV coaxial cables to the TV antenna amplifier.
  4. Disconnect the 4 TV coaxial cables at the TV antenna.
  5. With the TV function ON wait 20 seconds, test for greater than 1 volt at each of the 4 TV coax cable center conductors.
    • If all 4 TV coaxial cable center connectors are less than 1 volt, see Component Testing (Coaxial Cables - TV Antenna Amplifier to TV Antenna).
  6. If all 4 TV coaxial cable center connectors are greater than 1 volt replace the rear glass (TV antenna).
    • If 1TV coaxial cable center connector is less than 1 volt, replace the suspect TV antenna coaxial cable.
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