Test No. 1: Wipers Do Not Run In Any Mode

Locate 48-pin connector C201 behind instrument panel, on right side of steering column. Turn ignition switch to RUN position. Backprobe with test light between ground and Yellow wire at wiper/washer switch wiring harness connector. If test light is on, go to next step. If test light is off, replace fuse and/or repair open wire between wiper switch connector and instrument panel fuse block. If fuse is open, check Yellow wire circuit for short to ground. See WIRING DIAGRAMS .
Turn wiper switch to HI. Connect test light between ground and Purple wire at wiper/washer switch wiring harness 13-pin connector. If test light is on, go to next step. If test light is off, Check for poor connection at Purple wire at wiper/washer switch 13-pin connector to 48-pin connector. Also check for open in pigtail and Yellow wire circuit to wiper/washer switch. If wiring is okay, replace wiper/washer switch.
Disconnect wiper motor 5-pin connector. Connect test light between ground and terminal "C" (Purple wire) at wiper motor 5-pin wiring harness connector. If test light is on, go to next step. If test light is off, check for open or poor connection in Purple wire between wiper/washer switch connector and wiper motor. See Figure .
Connect test light from wiper motor connector terminal "C" (Purple wire) to terminal "A" (Black wire). If test light is on, check for poor connection to wiper motor assembly. If connection is okay, replace wiper motor. If test light is off, check for open or poor connection in Black wire.