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

Circuit Operation

The anti-lock system is controlled by the electronic brake control module (EBCM) whenever the vehicle is in motion (under power) over 5 mph. The EBCM constantly monitors the speed at each wheel (rear wheels act as one), and is activated when the brake pedal is pressed. The EBCM, in turn, alternately brakes the wheels individually, allowing better control during braking on slippery surfaces.