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Home >> Saturn >> 2009 >> Vue Red Line, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1140 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> Digital Radio Malfunction >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2008 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

Digital Radio Circuit Malfunction

  1. Ignition OFF, disconnect the harness connector at the DRR.
  2. Test for less then 5 ohms between terminal 9 and ground.
    • If greater than specified range, test circuit for an open or high resistance.
  3. Test for Battery Voltage between terminal 16 and ground.
    • If less than specified value, test circuit for a short to ground or an open/high resistance.
  4. Test for less then 5 ohms between terminal 5 at the DRR, and terminal 1 at the DLC.
    • If greater then specified range, test circuit for an open or high resistance.
  5. If all circuits test normal, test or replace the digital radio antenna.

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 of resistance on the antenna coax center circuit from end to end.
    • If greater than the specified range, replace the antenna coax.
  7. Test for infinite resistance between the coax center terminal and the outer shield.
    • If less than the specified value, replace the antenna coax.
  8. If all circuits test normal, test or replace the digital radio antenna.

Digital Radio Output Circuit Malfunction

  1. Ignition OFF, disconnect the X2 harness connector at the radio.
  2. Radio ON, test for 5.0-7.5 volts between the signal circuit terminal 1 and ground.
    • If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the DRR.
    • If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the DRR.
  3. Test for 5.0-7.5 volts between the signal circuit terminal 2 and ground.
    • If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the DRR.
    • If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the DRR.
  4. Test for 5.0-7.5 volts between the signal circuit terminal 9 and ground.
    • If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the DRR.
    • If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the DRR.
  5. Test for 5.0-7.5 volts between the signal circuit terminal 10 and ground.
    • If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the DRR.
    • If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the DRR.
  6. If all circuits test normal, test or replace the radio.
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