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Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the EBCM.
  2. Test for less than 1.0 ohm of resistance from ground circuit terminal 26 (LE5) or 18 (LNF) and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Test for less than 1.0 ohm of resistance from ground circuit terminal 13 and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  4. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 1(LNF) or 14 (LE5) and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  5. Verify that a test lamp illuminates between the B+ circuit terminal 32 (LNF) or 1(LE5) and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  6. If all circuits test normal, test or replace the EBCM assembly.
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