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Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the GBCM.
  2. Ignition OFF, test for less than 6.5 Ω between the ground circuit terminals listed below and ground.
    • Terminal H
    • Terminal F
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Verify that a test lamp illuminates between the B+ circuit terminals listed below and ground.
    • Terminal A
    • Terminal C
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  4. If all circuits tests normal, replace the GBCM.
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