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Circuit/System Testing

  1. Ignition OFF, Disconnect the harness connectors at the PSCM.
  2. Ignition OFF, verify that there is less than 3.0 ohms between the ground circuit terminal 2 X2 and ground.
    • If greater than the specified value, test the ground circuit for an open/high resistance.
  3. Ignition ON, verify a test lamp illuminates between the battery positive voltage circuit terminal 1 X2 and ground.
    • If test lamp did not illuminate, test the battery positive voltage circuit for a short to ground or an open/high resistance.
  4. Ignition ON, verify a test lamp illuminates between the ignition voltage circuit terminal 1 X1 and ground.
    • If test lamp did not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance.
  5. If all circuits test normal, replace the PSCM.
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