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Throttle Valve Switch

There are 2 types of throttle valve switches used. The MPC switch has multiple contact points for continuously increasing the amount of injection as throttle plate is opened. See Fig 1. The AFC switch has only 2 contact points, idle and full load. ECU unit either receives idle or full load signals, from switch, dependent upon position of throttle valve.

Fig 1: AFC & MPC Throttle Valve Switches

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