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

Antilock Brakes / Traction Control Systems: Description and Operation

Anti-Lock Control
The anti-lock brake system (ABS) consists of the following components:
^ Anti-lock brake system (ABS) module
^ Hydraulic control unit (HCU)
^ Front wheel speed sensor
^ Front wheel speed sensor ring
^ Rear wheel speed sensor
^ Rear wheel speed sensor ring
^ Red brake warning indicator
^ Traction control switch
^ Yellow ABS warning indicator