Circuit/System Testing
NOTE:
The Crankshaft Position System Variation Learn Procedure may have to be repeated up to 5 times before the procedure is successful.
- Perform the Crankshaft Position System Variation Learn
procedure. The scan tool should display Learned Successful.
- If, after 5 Crankshaft Position System Variation Learn Procedure attempts, the scan tool did not display Learned Successful; inspect for the following conditions:
- Worn crankshaft main bearings
- A damaged or misaligned reluctor wheel
- Excessive crankshaft runout
- A damaged crankshaft - Refer to Crankshaft and Bearing Cleaning and Inspection .
- Interference in the signal circuit of the crankshaft position sensor
- The ignition switch is in the ON position until there is insufficient system voltage.
- An ECM power disconnect with the ignition ON that may have erased the crankshaft position system variation values and set DTC P0315
- Debris between the crankshaft position sensor and the reluctor wheel
- If a condition is found
- Repair or replace the affected component as necessary.
- Perform the Crankshaft Position System Variation Learn Procedure.
- If no condition is found
- Replace the K20 engine control module.
- Perform the Crankshaft Position System Variation Learn Procedure.
- Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed in the Freeze Frame/Failure Records data.
- Verify the DTC is not set.
- If any of DTC sets
- If none of the DTCs set
- All OK