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Circuit/System Testing

WARNING: This page is about a different car, the 2010 Chevrolet Malibu. 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 PSCM.
  2. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 8 and ground.
    • If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
  3. If all circuits test normal, replace the PSCM.
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