Circuit DescriptionThe aftertreatment diesel exhaust fluid dosing unit heater is used to defrost and/or prevent freezing of the diesel exhaust...

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

Circuit DescriptionThe engine oil temperature sensor is a variable resistor sensor and is used to measure the temperature of the...

Circuit DescriptionThe OEM truck manufacturer can install a permit switch in the dash or send an inhibit message via the...

Circuit DescriptionCertain anti-lock braking (ABS) controllers communicate with the engine control module (ECM) through the SAE J1939 data link. Under...

Circuit DescriptionThe aftertreatment diesel exhaust fluid (DEF) sensor is a smart device that communicates to the ECM via the J1939...