Crankshaft Position System Variation Learn Procedure

Preliminary Steps

When performing the Crankshaft Postion System Variation Learning Procedure, always set the vehicle parking brake and block the drive wheels. Release the throttle immediately when the engine starts to decelerate. Once the learn procedure is completed, engine control will be returned to the operator and the engine will respond to throttle position.

Procedure

1. Install a scan tool.
2. Put vehicle in Park or Neutral.
3. Run the engine until it is above the specified temperature.
4. Set the vehicle parking brake and block the drive wheels.
5. Turn all accessories OFF.
6. Enable the Crankshaft Postion System Variation Learning Procedure with the scan tool.
7. Raise the engine RPM to the specified value Releasing the throttle as soon as the engine cuts out.

Procedure Verification

The scan tool will indicate that the crankshaft position system variation has been learned.