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 MANUALSCADILLAC1993DEVILLE BASE, 4D SEDANREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTHEATED GLASS/DEFOGGERSWINDSHIELD - HEATEDTESTINGPRELIMINARY WINDSHIELD RESISTANCE TESTWINDSHIELD RESISTANCE TEST
1993 Cadillac DeVille Base, 4D Sedan
Windshield Resistance Test
1993 Cadillac DeVille Base, 4D SedanSECTION Windshield Resistance Test
- Refer to, under TESTING, TESTING PRECAUTIONS and also refer to PRELIMINARY CHECKS before beginning test.
- With ignition switch off, unplug windshield connector. See Fig 1 . Using an ohmmeter, measure resistance on windshield side of connector between terminals "A" (Light Blue wire) and "B" (Red/White wire) terminals.
- Resistance should be less than 20 ohms (DeVille/Sixty-Special) or 0.6-8.0 ohms (Eldorado and Seville). If resistance is within specifications, go to next step. If resistance is not within limits, check connector terminals. If terminals are okay, replace windshield.
- Measure resistance between connector terminals "B" (Red/White wire) and "C" (Black/White wire) terminals. Resistance should be 2.0-8.0 ohms. If resistance is within specifications, go to next step. If resistance is not within limits, check connector terminals. If terminals are okay, replace windshield.
- Measure resistance between each terminal and ground. Resistance should be greater than 10,000 ohms. If resistance is less than 10,000 ohms, check for shorts or conductive material ground between windshield and body. If resistance is as specified, continue with testing procedure.
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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.