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Front Wiper Low Speed Inoperative

  1. Turn ignition off. Disconnect Gray 20-pin multifunction switch connector. See Figure . Connect fused jumper wire between Gray 20-pin multifunction switch connector terminals No. 17 (Violet wire) and No. 18 (Dark Blue wire). See Figure . Turn ignition on. If front wiper motor operates, replace multifunction switch. See MULTIFUNCTION SWITCH  under REMOVAL & INSTALLATION. If front wiper motor does not operate, go to next step.
  2. Turn ignition off. Disconnect Black 6-pin front wiper motor connector. Using test light connected to battery voltage, probe Black 6-pin front wiper motor connector terminal No. 4 (Black wire). See Figure . If test light illuminates, go to next step. If test light does not illuminate, repair open in Black wire between Black 6-pin front wiper motor connector terminal No. 4 and ground. See GROUND DISTRIBUTION article in WIRING DIAGRAMS.
  3. Check fuse No. 5 (20-amp) located in instrument panel junction block. See COMPONENT LOCATIONS  . If fuse No. 5 is okay, go to next step. If fuse No. 5 is blown, check for short to ground in Dark Blue wire between Brown 11-pin instrument panel junction block connector C8 terminal No. 6 and Gray 20-pin multifunction switch connector terminal No. 18. See Figure . Check for short to ground in Dark Blue wires between front wiper relay and Blue 15-pin instrument panel junction block connector C2 terminals No. 4 and 6. See Figure . Check for short to ground in Dark Blue wire between Blue 15-pin instrument panel junction block connector C2 terminal No. 5 and Black 6-pin front wiper motor connector terminal No. 1. See POWER DISTRIBUTION article in WIRING DIAGRAMS. Repair as necessary.
  4. Using DVOM, measure resistance of Violet wire between Black 6-pin front wiper motor connector terminal No. 5 and Gray 20-pin multifunction switch connector terminals No. 15 and 17. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open in Violet wire between Black 6-pin front wiper motor connector terminal No. 5 and Gray 20-pin multifunction switch connector terminals No. 15 and 17.
  5. Using test light connected to ground, probe Gray 20-pin multifunction switch connector terminal No. 18 (Dark Blue wire). Turn ignition on. If test light illuminates, go to next step. If test light does not illuminate, repair open in Dark Blue wire between Gray 20-pin multifunction switch connector terminal No. 18 and Brown 11-pin instrument panel junction block connector C8 terminal No. 6. See POWER DISTRIBUTION article in WIRING DIAGRAMS.
  6. Replace front wiper motor. See appropriate WIPER/WASHER SYSTEMS article.
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