LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2007 >> STS Base, 4.6 A, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> Digital Radio Malfunction >> Circuit/System Testing >> Digital Radio Antenna Circuit Malfunction
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Digital Radio Antenna Circuit Malfunction

WARNING: This page is about a different car, the 2008 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
  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.
scientia non olet · About LEMON Manuals