Test 9: Wiper Switch

Using Harness Adapter (210 589 01 63 00), connect Breakout Box (129 589 00 21 00) to combination control module. Turn ignition switch to RUN position. Measure voltage between terminals No. 42 and 65 at breakout box with wiper switch in appropriate position. See WIPER SWITCH VOLTAGE  table. If voltage is as specified, combination switch is okay at this time. If voltage is not as specified, check wiring. If wiring is okay, replace combination switch.