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Suddenly lost power to 2of4 fuses on my mers.checked every ground and connection,changed ECM,key switch,and pick up for crank I have power on my purple ignition wire and going into relays but not opening relays. Any thoughts?
Merc uses a main power relay (MPR) to power up the others. The MPR is energized by a ground being applied from the ECM. Not knowing which 2.5 you have the pic is an example. The MPR and fuel pump relays get power when key is turned ON. Unless the MPR sees a ground from the ECM nothing else gets power
Thank you,I have looked all over for a vin# with no luck I know it's a 2004 an I'm pretty sure it's an optimax but I'm sure it's a pain in my butt.il see if I can locate a main breaker thanks again
