Operation CHARM: Car repair manuals for everyone.

Antilock Brake System

The four wheel anti-lock brake system (4WABS) consists of the following components:
- anti-lock brake module
- front anti-lock brake sensors
- front anti-lock brake sensor indicators
- hydraulic control unit (HCU)
- rear anti-lock brake sensors
- rear anti-lock brake sensor indicators
- yellow anti-lock brake warning indicator