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.
1997 Saturn SW2 AutomaticFACTORY OEM SERVICE PROCEDURE
Crankshaft Position (CKP) Sensor Pick-Up Coil Short & Resistance Checks
- Set DVOM on 2000-ohm scale position. Connect DVOM leads to CKP sensor connector located on side of engine block. Turn ignition off. Disconnect ignition control module connectors. Check resistance between CKP sensor terminals at ignition control module connector.
- CKP sensor resistance should be within specification range. See CRANKSHAFT POSITION (CKP) SENSOR RESISTANCE table. If resistance is not as specified, replace CKP sensor. If sensor is within specification, go to next step.
- With CKP sensor installed in block, connect one ohmmeter lead to either sensor terminal at ignition control module. Touch other lead of ohmmeter to engine block. No continuity should exist. If continuity exists, CKP sensor is shorted to ground and must be repaired or replaced.
CRANKSHAFT POSITION (CKP) SENSOR RESISTANCE (1)
| Application | Ohms | ||
|---|---|---|---|
| 1.9L | 700-900 | ||
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Factory Service Tools
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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.
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