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.
Diagnostic Procedure
2000 Saturn LW2 AutomaticSECTION Diagnostic Procedure
- Turn ignition on, engine off. Using scan tool, monitor intermittent wiper voltage. If voltage is more than 0.4 volt, problem is intermittent. See DIAGNOSTIC AIDS . If voltage is less than 0.4 volt, go to next step.
- Disconnect wiper/washer switch connector. Using scan tool, monitor intermittent wiper voltage. If voltage is more than 4.5 volts, replace wiper/washer switch. See WIPER/WASHER SWITCH under REMOVAL & INSTALLATION. If voltage is less than 4.5 volts, go to next step.
- Turn ignition off. Disconnect BCM connector J3 (Pink). Check for continuity between ground and wiper/washer switch connector terminal "C" (Dark/Green wire). See Fig 1 . Check for continuity between wiper/washer switch connector terminals "C" (Dark/Green wire) and "D" (Gray wire). If continuity exists in either circuit, repair short to ground in Dark Green wire, or shorted Dark Green wire and Gray wire. If continuity does not exist, replace BCM. See appropriate BODY CONTROL MODULES article.
RENDER: 1.0x
NO RELATED
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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.