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)

Or, hide this message: temporarily or permanently

A3 Check Ignition to Anti-Lock Brake Control Module Wire







- Check for continuity between breakout box pin 53 and ignition switch wire 687.

- Is there continuity?

YES -- Reverify reading at test step A1. A1 Check Power to Anti-Lock Brake Control Module

NO -- Service circuit 687, or fuse.