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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ABS Main Relay: Testing and Inspection

ABS Relay Check: Checking Continuity Between Terminals:






1. Remove the splash shield
2. Remove the water proof cover.
3. Use a flat-tipped screwdriver to remove the Hydraulic Unit Connector from the Hydraulic Unit bracket.
4. Remove all of the relays from the relay box and check the continuity between the terminals when power is not supplied and when power is supplied.