ECU Power Source Circuit [09/2013 - ]: Description

When the power switch is turned on (IG), current flows from the MREL terminal of the power management control ECU to the IGCT-D relay. This closes the IGCT-D relay contact points and supplies current to the IGCT 3 relay. This closes the IGCT 3 relay contact points and supplies power to the +B1 and +B2 terminals of the power management control ECU.