Crankshaft Position Sensor System Variation Learn Procedure

WARNING: Before performing crankshaft position system variation learn procedure, always set parking brake and block drive wheels in order to prevent personal injury. Release throttle immediately when engine starts to decelerate in order to eliminate over revving engine. Once learn procedure has been completed, control module will return engine control to operator and engine will respond to throttle position.

Battery must be fully charged and in good condition. Scan tool connection at Data Link Connector (DLC) should be clean and tight before starting crankshaft position system variation learn procedure.

Close hood. Block drive wheels and set vehicle parking brake. Turn all accessories off. Start engine. Ensure engine is at least 158°F (70°C). Turn ignition off. Using scan tool, select and enable CRANKSHAFT POSITION SYSTEM VARIATION LEARNING PROCEDURE. Start engine.
Ensure transaxle is Park. Press and hold brake pedal firmly. Increase engine speed until fuel cutoff is reached at 4050 RPM. Immediately release accelerator pedal after fuel cutoff is reached. The crankshaft position system variation compensating values are learned when the RPM decreases back to idle. Monitor status for DTC P1336.
If scan tool indicates DTC P1336 ran and passed, crankshaft position system variation learn procedure is complete. If scan tool indicates DTC P1336 failed or did not run, check for additional DTCs and repair as necessary. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . If only DTC P1336 is set, repeat crankshaft position system variation learn procedure as necessary.