LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 2016 >> Focus S, Automatic DCT Trans, Gas >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Steering Column Switches >> Steering Wheel And Column Electrical Components (Except Electric Vehicle) >> Description And Operation >> Steering Wheel and Column Electrical Components - System Operation and Component Description >> System Operation >> ON - Conventional Ignition Switch
April 5, 2026: LEMON Manuals is launched! Read the announcement.

ON - Conventional Ignition Switch

When the BCM receives the ON voltage input from the ignition switch, it activates the ignition and accessory relays, providing ignition power to various vehicle systems and modules. The BCM communicates the state of the ignition to the other modules by sending an "ignition status" message over the MS-CAN and a "power mode" message over the HS-CAN.