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Home >> Pontiac >> 2009 >> Solstice GXP, 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 11 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information & 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 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
  • If the audio common circuit is shorted to voltage the VCIM has been damaged and requires replacement.
  • If the vehicle is equipped with the On-Star TTY Interface Module (OTIM), disconnect the OTIM components and restore the connections with the VCIM before continuing diagnosis. If the concern is no longer present with OTIM disconnected, Replace the OTIM system.
  1. Disconnect connector X2 from the VCIM.
  2. Test for high resistance at the left audio signal circuit (+) terminal 1 for an open or for a short to ground or for a short to voltage.
  3. Test for a high resistance, or for a short to voltage at the audio common circuit terminal 2 for an open.
  4. If the circuits test normal, test or replace the VCIM.
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