Wipers Inoperative In All Modes
- Turn ignition switch to accessory position. Connect test light between ground and White wire terminal of wiper switch connector. See Fig 1
. If test light does not glow, repair open in White wire between wiper switch and fuse.
- If test light glows, connect test light between ground and Gray wire terminal of wiper switch connector with wiper switch in LO position, and at Purple wire with wiper switch in HI position. If test light does not glow at one or both wires, replace wiper switch.
- If test light glows at both wires, disconnect wiper motor connector. Connect fused jumper wire between battery positive terminal and Gray wire terminal of wiper motor connector. If wipers do not operate, repair or replace wiper motor. If wipers operate, repair open in White or Purple wire between wiper switch and wiper motor.
Courtesy of GENERAL MOTORS CORP.