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Home › Cadillac › 1993 › Allante › Repair and Diagnosis › Engine Performance › System › Engine Controls - Self-Diagnostics › Diagnostic Tests › DTC P039: TCC Engagement Problem › Test Conditions

Test Conditions

  1. Codes P024, P026, P027, P028, P031, P032, P034, P056 and P075 not set.
  2. Transaxle in 3rd or 4th gear.
  3. Engine running.
  4. TCC commanded on (100%).
  5. Transaxle not in park or neutral.
  6. Throttle position switch open.
  7. Delivered torque from engine not 20 ft. lbs. or less (coast down condition).
  8. Delivered torque from engine not 508 ft. lbs. or more (engine under extreme load (Example: towing a trailer or wide open throttle).
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