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Wipers Do Not Operate In Lo Or Mist

  1. Turn ignition switch to RUN position. Turn wiper switch to LO position. Using a DVOM, backprobe from Gray wire terminal of wiper switch connector to battery voltage. If voltage is more than 10 volts, go to next step. If voltage is less than 10 volts, replace wiper switch.
  2. Turn wiper switch to MIST position and hold. If voltage is less than 10 volts, replace wiper switch. If voltage is more than 10 volts, turn wiper switch to LO position. Backprobe from Light Blue/Black wire terminal of wiper switch connector to battery voltage. See Figure . If voltage is more than 10 volts, go to next step. If voltage is less than 10 volts, replace wiper switch.
  3. Turn wiper switch to MIST position and hold. If voltage is less than 10 volts, replace wiper switch. If voltage is more than 10 volts, turn wiper switch to LO position. Backprobe from Gray wire terminal of pulse wiper control module connector to battery voltage. If voltage is more than 10 volts, go to next step. If voltage is less than 10 volts, replace pulse wiper control module.
  4. Backprobe from Light Blue wire terminal of pulse wiper control module connector to battery voltage. If voltage is more than 10 volts, go to next step. If voltage is less than 10 volts, replace pulse wiper control module.
  5. Backprobe from Gray wire terminal of wiper motor connector to battery voltage. If voltage is more than 10 volts, repair open Light Blue wire between control module connector and wiper motor connector. If voltage is less than 10 volts, repair open Gray wire between control module connector and wiper motor connector.
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