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Home >> Pontiac >> 2008 >> Solstice Base, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Entertainment Systems >> Cellular System, Entertainment System, And Navigation System >> Diagnostic Information & Procedures >> No (or Noisy) OnStar Audio >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the X2 harness connector at the VCIM.
  2. Ignition ON, test for 30-40 mV AC 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 radio.
    • 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 radio.
  3. Test for 30-40 mV AC between the signal circuit terminal 1 and the low reference circuit terminal 2.
    • If not within the specified range, test the low reference circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the radio.
  4. If all circuits test normal, replace the VCIM.
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