The ECM is similar to the ECU in function, but may be used interchangeably depending on the manufacturer. It acts as the brain of the engine, controlling critical processes and responding to changing conditions on the road. Check engine light or other warning lights Poor fuel efficiency Engine misfires or stalling ...

The ECM is similar to the ECU in function, but may be used interchangeably depending on the manufacturer. It acts as the brain of the engine, controlling critical processes and responding to changing conditions on the road. Check engine light or other warning lights Poor fuel efficiency Engine misfires or stalling ...