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

Brake Signal: Description and Operation

PURPOSE
Switch signals the ECU in addition to illuminating the brake lights.

LOCATION
Beneath dash at brake pedal assembly.

OPERATION
When the service brake is applied, the switch signals the ECU in addition to illuminating the brake lights. The ECU reads this signal as a deceleration indicator and uses it to regulate fuel injection quantity during this operating phase.