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Digital Radio Antenna Circuit Malfunction

  1. Ignition OFF, disconnect the digital radio antenna coax from the digital radio receiver (DRR). Connect the EL-48028 to the DRR.
  2. Ignition ON, radio tuned to XM, verify XM reception is clear and uninterrupted.
    • If reception is not clear, replace the DRR.
  3. Ignition OFF, disconnect the digital radio antenna coax from the digital radio antenna.
  4. Ignition ON, test for less than 1 volt between the antenna coax center terminal and ground.
    • If greater than the specified range, replace the antenna coax.
  5. Test for infinite resistance between the antenna coax center terminal and ground.
    • If less than the specified value, replace the antenna coax.
  6. Test for less than 5 ohms on the antenna coax center circuit from end to end.
    • If greater than the specified range, replace the antenna coax.
  7. Test for less than 5 ohms between the two ends of the coax cable outer shield.
    • If greater than the specified range, replace the antenna coax able.
  8. Test for infinite resistance between the coax center terminal and the outer shield.
    • If less than the specified value, replace the antenna coax.
  9. If all circuits test normal, replace the digital radio antenna.
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