Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Wiper Control Switch Test

Fig. 1 Windshield wiper switch continuity chart. 1982---87:





1. Remove wiper switch.
2. Operate switch in all positions and check continuity between switch terminals using a self-powered test lamp or ohmmeter. When testing switch in intermittent wipe position, variable resistor must be checked with an ohmmeter.
3. If switch continuity is not as specified, replace switch.