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Home >> Pontiac >> 2001 >> Firebird Formula, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 5.7L >> Programming >> Crankshaft Position Sensor Variation Learn Procedure >> Learn Procedure
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Learn Procedure

  1. Connect scan tool to data link connector located under driver's side of instrument panel, left of steering column. Apply parking brake and block drive wheels. Close hood if necessary. Place transmission in Park (A/T), or Neutral (M/T).
  2. Start engine and allow to idle until engine coolant temperature reaches 158°F (70°C). Turn off all accessories. Depress brake pedal for duration of the procedure.
  3. Use scan tool to enable crankshaft position system variation learn procedure. Slowly raise engine speed to 4000 RPM. Immediately release throttle when engine speed decreases. Turn ignition off for 15 seconds after learn procedure is completed successfully.
  4. If crankshaft position sensor variation learn procedure cannot be completed successfully, go to DTC P1336: CRANKSHAFT POSITION SENSOR VARIATION NOT LEARNED  under DIAGNOSTIC TESTS for additional diagnostic information.
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