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Compressor Runs Continuously

  1. Disconnect yellow wire (brown wire on Buick models) from compressor relay connector and plug connector back on relay.
    • If compressor still runs, replace relay.
    • Be sure that 8-14 second delay functions.

      If delay fails to function, replace height sensor.

  2. Disconnect height sensor wiring.
    • If compressor stops, replace height sensor.
    • If compressor still runs, locate open in wire from terminal No. 3 to relay.
  3. Check height sensor time delay function.
    • If no time delay, replace both sensor and relay.
    • If time delay is good, check circuit between compressor relay and height sensor for intermittent grounding condition.
  4. Check for defective relay by tapping on case. If relay clicks, replace it.
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