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Circuit/System Testing

WARNING: This page is about a different car, the 2007 Saturn Outlook. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connectors at the left and right liftgate tape switches.
  2. Ignition OFF, test for less than 1 ohm of resistance between the low reference circuit terminal B and ground at the left liftgate tape switch harness connector.
    • If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the PLGM.
  3. Ignition ON, test for 5 volts between the signal circuit terminal A and ground at the right liftgate tape switch harness connector.
    • 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 PLGM.
  4. Ignition OFF, disconnect the C1 harness connector at the PLGM.
  5. Ignition ON, verify that a test lamp does not illuminate between the signal circuit terminal A and ground.
    • If the test lamp illuminates, test the signal circuit for a short to voltage.
  6. If all circuits test normal, test or replace the affected liftgate tape switch.
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