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Circuit/System Testing

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the transmission 20-way in line harness connector at the transmission, verify that a test lamp does not illuminate between the ignition voltage circuit terminal 13 and ground.
    • If the test lamp illuminates, test the IGN voltage circuit for a short to voltage.
  2. Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit terminal 13 and ground.
    • If the test lamp does not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance.
    • If the circuit tests normal replace the control solenoid (w/body and TCM) valve assembly.
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