Wiring Test
- Disconnect 4-pin wiper switch connector at base of steering column. Turn ignition on. Connect one end of a jumper wire to ground, then touch the other end to each wire in the harness side of connector.
- With Blue-White grounded, wipers should operate at low speed. With Blue-Red grounded, wipers should operate at high speed. With Blue-Yellow wire grounded, washer should spray.
- If motor operates correctly, unplug 2-pin connector and check for continuity with ground on the Black wire (male terminal). If a good ground connection is present and wipers do not function properly, repair wiring harness or replace switch.