Wiper Switch Component Test

Continuity Test

Fig. 27 Wiper Switch Continuity Test. 1989 Crown Victoria, Grand Marquis & Town Car:

Fig. 28 Wiper Switch Continuity Test. 1990-91 Crown Victoria, Mark VII, Grand Marquis & Town Car:

When testing a non-intermittent wiper switch, a self-powered test lamp or an ohmmeter can be used to check continuity. When testing an intermittent wiper switch, use only an ohmmeter to check continuity.
When taking test readings move the switch lever to detect marginal switch operation.
Refer to Fig. 27 and 28 for switch terminal identification and continuity readings.