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

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Compressor Clutch Relay: Testing and Inspection

Relay




NOTE: All A/C system relays are similar.

1. Check for continuity between terminals (2) and (4).
2. Connect a 12 V battery across terminals (2) and (4).
There should be continuity between terminals (1) and (3).