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)

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Steering Control Module: Description and Operation

With the ignition switch in ON, battery voltage is applied from fuse 1 to the electronic power steering control module (EPSCM). The input current to the electronic power steering solenoid valve is varying according to the vehicle speed and is controlled by EPSCM. According to the input current, the EPS solenoid valve controls the flow of power steering oil.