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 MANUALSBUICK2000PARK AVENUE BASE, 3.8 KREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTWIPER/WASHER SYSTEMSWIPER SYSTEM AND WASHER SYSTEMSYMPTOM TESTSTEST 7: PULSE DELAY OPERATES INCORRECTLY OR NOT AT ALL
2000 Buick Park Avenue Base, 3.8 K
Test 7: Pulse Delay Operates Incorrectly Or Not At All
2000 Buick Park Avenue Base, 3.8 KSECTION Test 7: Pulse Delay Operates Incorrectly Or Not At All
- Turn ignition switch to OFF position. Disconnect wiper/washer switch connector. Turn wiper switch to DELAY position. Connect ohmmeter between switch terminals B2 (Yellow wire) and B4 (Dark Blue wire). Move wiper switch through entire delay range, one notch at a time.
- Resistance should vary from about 39 k/ohms to 680 k/ohms. If resistance is not as specified, replace wiper switch. See appropriate STEERING COLUMN SWITCHES article. If resistance is as specified, go to next step.
- Reconnect 3-pin wiper switch connector. Disconnect wiper motor connector. Turn ignition switch to RUN position and wiper switch to HIGH position. Using DVOM, measure voltage between ground and wiper motor connector terminal "H" (Dark Blue wire). See Figure . If battery voltage does not exist, repair open circuit in Dark Blue wire between wiper motor connector terminal "H" and wiper switch connector terminal B4. See WIRING DIAGRAMS . If battery voltage exists, replace wiper motor cover. See WIPER MOTOR COVER (CIRCUIT BOARD) under REMOVAL & INSTALLATION.
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.