Circuit DescriptionThe DEF quality sensor is a smart device and communicates with the engine engine control module (ECM) via the...

Circuit DescriptionThe DEF quality sensor is a smart device and communicates with the engine engine control module (ECM) via the...

Circuit DescriptionThe original equipment manufacturer (OEM) security device is an optional device connected to the primary ECM through a J1939...

Circuit DescriptionThe OEM security device is an optional device connected to the primary engine control module (ECM) through a J1939...

Circuit DescriptionThe engine oil pressure switch is used by the electronic control module (ECM) to monitor the lubricating oil pressure....

Circuit DescriptionThe water-in-fuel sensor is attached to the fuel filter. The electronic control module (ECM) provides a 5 volt reference...