Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSATURN2000LS1 L4-2.2L VIN FREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULESERVICE AND REPAIRCRANKSHAFT RELEARN PROCEDURE
2000 Saturn LS1 L4-2.2L VIN F
Crankshaft Relearn Procedure
2000 Saturn LS1 L4-2.2L VIN FSECTION Crankshaft Relearn Procedure
IMPORTANT: Anytime a replacement PCM is installed the PCM must relearn the crankshaft notches.
When a replacement PCM is installed, or crankshaft position sensor or crankshaft or engine has been replaced, follow these procedures to relearn crankshaft notches:
1. Using Scan tool select "Crankshaft Pos. Variation Learn" under special functions menu.
2. Follow instructions as given on Scan tool.
IMPORTANT: This procedure will not be initiated if any misfire is detected. If misfire DTCs are present, refer to "Misfire Diagnosis" section prior to attempting to relearn crankshaft notches.
When a replacement PCM is installed, or crankshaft position sensor or crankshaft or engine has been replaced, follow these procedures to relearn crankshaft notches:
1. Using Scan tool select "Crankshaft Pos. Variation Learn" under special functions menu.
2. Follow instructions as given on Scan tool.
IMPORTANT: This procedure will not be initiated if any misfire is detected. If misfire DTCs are present, refer to "Misfire Diagnosis" section prior to attempting to relearn crankshaft notches.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.