Generic Electronic Module (Gem)

The engine control module (ECM) is connected to ignition switch I and II. When the ignition is turned ON, 12V is applied to the ignition sense input. The engine control module (ECM) then starts its power up routines and turns ON the engine control module (ECM) main relay, the main power to the engine control module (ECM) and it's associated system components. When the ignition is turned OFF the engine control module (ECM) will maintain its powered up state for up to 20 minutes while it initiates its power down routine and on completion will turn OFF the engine control module (ECM) main relay. The engine control module (ECM) will normally power down in approximately 60 seconds, do not disconcert the battery until the engine control module (ECM) is completely powered down.