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 Relay: Testing and Inspection

1. Using suitable ohmmeter, ensure continuity exists between connector terminals No. 1 and 2.
2. Ensure continuity does not exist between terminals No. 1 and 3.
3. Apply battery voltage between terminals 4 and 5.
4. Ensure continuity does not exist between terminals 1 and 2.
5. Ensure continuity does exist between terminal 1 and 3.
6. If continuity is not as indicated, replace relay(s).