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Test 4: Wiper Intermittent Mode Inoperative

WARNING: This page is about a different car, the 2000 Chevrolet Corvette and 1999 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition off. Disconnect wiper/washer switch connector C219 located at base of steering column. Disconnect wiper/washer switch harness connector C219. Turn wiper/washer switch to DELAY position. Connect ohmmeter between wiper/washer switch connector C219, terminals "A" (Dark Green wire) and "C" (Yellow wire).
  2. Move wiper/washer switch through entire delay range, one notch at a time. Resistance should change smoothly from about 39 k/ohms to 690 k/ohms. If resistance is not as specified, replace wiper/washer switch. See STEERING COLUMN SWITCHES - CORVETTE article. If resistance is as specified, go to next step.
  3. Ensure wiper/washer switch is in DELAY position. Using ohmmeter, measure resistance between wiper/washer switch connector C219, terminals "B" (Gray wire) and "C" (Yellow wire). If resistance is not 23-25 ohms, replace wiper/washer switch. See STEERING COLUMN SWITCHES - CORVETTE article. If resistance is 23-25 ohms, go to next step.
  4. Reconnect wiper/washer switch connector C219. Disconnect wiper motor connector. Turn ignition switch to RUN position. Ensure wiper/washer switch is in DELAY position. Measure voltage between ground and wiper motor connector terminal "E" (Dark Green wire) while turning wiper/washer switch through entire delay range, one notch at a time. See Figure . If voltage is 10-14 volts and exists throughout entire delay range, replace wiper motor. See WIPER MOTOR  under REMOVAL & INSTALLATION. If voltage is not 10-14 volts and/or does not exist throughout entire delay range, repair open in Dark Green wire between wiper motor connector terminal "E" and wiper/washer switch connector terminal "A". See WIRING DIAGRAMS  .
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