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 Light Relay: Testing and Inspection

Brake Light Relay Inspection
1) Disconnect negative (-) cable at battery.
2) Remove brake light relay (1) from relay box.
3) Check brake light relay as follows.
a) Check that there is no continuity between terminals (5) or (6) and (4). If there is continuity, replace relay.
b) Check continuity between terminals (3) and (6). If there is no continuity, replace relay.
c) Connect battery positive (+) terminal to terminal (4) of relay.
d) Connect battery negative (-) terminal to terminal (2) of relay.
e) Check continuity between terminals (5) and (6). If there is no continuity, replace relay.