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 MANUALSSATURN2000LW1 L4-2.2L VIN FREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULEDESCRIPTION AND OPERATIONCRANKSHAFT RELEARN ABILITY
2000 Saturn LW1 L4-2.2L VIN F
Crankshaft Relearn Ability
2000 Saturn LW1 L4-2.2L VIN FSECTION Crankshaft Relearn Ability
The PCM uses crankshaft velocity calculations to determine misfire and run misfire self-diagnostics. The PCM must know precisely the variability in crankshaft notches for this function. The PCM has a "notch learn" process that learns the variability between notches which must be reset if the crankshaft in the engine is replaced. With use of the scan tool, the crankshaft learn procedure can be set to relearn.
IMPORTANT: Do not transfer PCM's from one vehicle to another. The learned crankshaft notches will be different from one vehicle to another.
IMPORTANT: Do not transfer PCM's from one vehicle to another. The learned crankshaft notches will be different from one vehicle to another.
RENDER: 1.0x
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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.