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Home >> Pontiac >> 2007 >> Solstice Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 31 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> No (or Noisy) OnStar Audio >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the X2 harness connector at the CIM.
  2. Test for less than 5 Ω between terminal 2 and ground.
    • If greater than the specified range, test the circuit for an open or high resistance. If the circuit tests normal, replace the radio.
  3. Reconnect the CIM X2 harness connector. Disconnect the X2 harness connector at the radio.
  4. Ignition ON, test for a momentary AC voltage between the signal circuit terminal 8 and ground when the OnStar® Call Center button is pressed.
    • If AC voltage was not present, test the circuit for a short to voltage, short to ground, or an open/high resistance. If the circuit tests normal, replace the CIM.
  5. If all circuits test normal, replace the radio.
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