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Test D: Wipers Inoperative At Interval Setting

WARNING: This page is about a different car, the 1997 Lincoln Continental. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect Wiper Control Module (WCM) harness connector located behind instrument panel, between steering column and radio. Set wiper switch to interval. Measure resistance between Brown/White and Orange wires at WCM harness connector. If resistance is 10.5-12 k/ohms, go to step 3). If resistance is not 10.5-12 k/ohms, go to next step.
  2. Disconnect multifunction switch 7-pin connector. Measure resistance between Brown/White and Orange wires at multifunction switch harness connector terminals. If resistance is 10.5-12 k/ohms, go to next step. If resistance is not as specified, repair wire(s) as necessary and retest system.
  3. Disconnect multifunction switch 7-pin connector. Measure resistance between Brown/White and Dark Blue/White wire terminals on multifunction switch harness connector while rotating interval control. If resistance gradually changes from 3.3 k/ohms to 103.3 k/ohms, go to next step. If resistance does not change from 3.3 k/ohms to 103.3 k/ohms, check wiper switch. See WIPER SWITCH CONTINUITY TEST under COMPONENT TESTS  .
  4. Measure resistance of Dark Blue/White wire between WCM connector and ground. If resistance is 5 ohms or less, replace WCM. If resistance is greater than 5 ohms, repair open in Dark Blue/White wire. After repair, retest system.
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