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Preliminary Glow Plug Diagnosis

  1. If system does not operate as described in NORMAL GLOW PLUG CIRCUIT OPERATION , ensure glow plug system is correctly installed. Check that all connectors are properly attached, clean and tight. Inspect engine harness ground connection. Ensure nut securing 4-wire connector at controller is tightened to 96 INCH lbs. (11 N.m), with connector fully seated and latched.
  2. Ensure controller copper stud upper nuts are tightened to 96 INCH lbs (11 N.m). Do not tighten lower nuts. Ensure temperature switch connector in water crossover near front of engine is tightened to 48 INCH lbs. (5.4 N.m). Inspect WAIT lamp on instrument panel for tight connection and operation.
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