Crankshaft Position System Variation Learn

Crankshaft Position System Variation Learn

Note: The Crankshaft Position System Variation Learn procedure is also required when the following service procedures have been performed, regardless of whether DTC P0315 is set:

* An engine replacement
* A engine control module (ECM) replacement
* A crankshaft balancer replacement
* A crankshaft replacement
* A crankshaft position sensor replacement
* Any engine repairs which disturb the crankshaft to crankshaft position sensor relationship.

Note: The ECM monitors certain component signals to determine if all the conditions are met to continue with the crankshaft position System Variation Learn Procedure.

1. Service Mode active, observe the DTC information with a scan tool. Verify no other DTCs are set, except DTC P0315.

• If any DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.

Note: To ensure the battery pack has sufficent state of charge to get Crankshaft Position System Variation Learn values with the lowest engine noise present, perform this procedure when the Hybrid/EV Battery Pack State Of Charge parameter is at least 40%.

2. Select the Crankshaft Position System Variation Learn procedure with a scan tool and perform the following:

1. Block drive wheels.
2. Set parking brake.
3. DO NOT apply brake pedal.
4. Cycle the ignition from OFF to Service Mode active.
5. When directed, apply and hold brake pedal for the duration of the procedure.
6. Ignition ON, engine running at operating temperature.
7. Turn the air conditioning (A/C) OFF.
8. The vehicle must remain in Park or Neutral.

Note: The ECM controls the engine speed during the System Variation Learn Procedure.

9. Tap and release the accelerator pedal to start the Crankshaft Position System Variation Learn procedure.

3. The scan tool displays Learn In Progress.
4. The scan tool displays Learn Successful.
5. Verify DTC P0315 ran and passed This Ignition Cycle.

• If DTC P0315 failed or did not run This Ignition Cycle, or another DTC is present, refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.

6. Once the Crankshaft Position System Variation Learn procedure has successfully completed, and in order to store the crankshaft position system variation values in the ECM, turn OFF the ignition and verify all vehicle systems are OFF. This may take up to 2 minutes.