DeVille DHS V8-4.6L VIN Y (2000)
Crankshaft Position Sensor: Service and Repair
CKP System Variation Learn Procedure
CAUTION: Set the vehicle parking brake and block the drive wheels when performing the Crankshaft Position System Variation Learning
Procedure In order to prevent personal injury. Release the throttle Immediately when the engine starts to decelerate. Once the learn procedure
is completed, the PCM will return the engine control to the operator and the engine will respond to the throttle position.
1. Set the parking brake.
2. Block the drive wheels.
3. Ensure the hood is closed.
4. With the scan tool, monitor for DTCs. If a DTC is set, refer to Diagnostic Trouble Code (DTC) List/Type before proceeding.
5. Start the engine and allow engine coolant temperature to reach at least 70°C (158°F).
6. Turn OFF the ignition.
7. Select and enable the crankshaft position variation learn procedure with the scan tool.
8. Start the vehicle.
9. Apply and hold the service brake pedal firmly.
10. Ensure the transaxle is in park.
11. Increase accelerator pedal position until the fuel cutoff is reached at 5150 RPM. Immediately release the accelerator pedal after fuel cutoff is
reached.
The crankshaft position system variation compensating values are learned when the RPM decreases back to idle. If the procedure terminates.
12. Observe DTC status for DTC P1336.
13. If the scan tool indicates that DTC P1336 ran and passed, the crankshaft position system variation learn procedure is complete. If the scan tool
indicates DTC P1336 failed or not ran, check for other DTCs. If no DTCs other than P1336 are set, repeat the crankshaft position system variation
learn procedure as necessary.
