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

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Anti-Lock Brake Signal

Anti Lock Brake Signal Circuit:





PURPOSE
The anti lock signal allows the ECU to control engine idle RPM for optimum braking.

LOCATION
ABS control unit, behind center console.

OPERATION
During anti lock brake operation, the ECU receives a signal from the anti lock control unit. The ECU controls the idle air control servo to maintain optimum anti lock braking effectiveness.