Circuit DescriptionThe aftertreatment particulate matter sensor is a smart device and communicates with the engine control module (ECM) via the J1939 data link. The aftertreatment particulate matter sensor performs internal diagnostics and reports malfunctions back to the primary ECM using the J1939 data link. The particulate matter sensor is permanently attached to the particulate matter control module. They are serviced as a single component and can not be replaced individually. The aftertreatment particulate matter sensor is used to measure the soot emissions at the outlet of the aftertreatment system. Component LocationThe aftertreatment particulate matter sensor location can vary depending on...

Circuit DescriptionThe aftertreatment diesel exhaust fluid dosing unit heater relay is used to provide power to the aftertreatment diesel exhaust fluid dosing unit heater. The aftertreatment diesel exhaust fluid dosing unit heater is used to defrost and/or prevent freezing of the diesel exhaust fluid dosing unit. Component LocationThe aftertreatment diesel exhaust fluid dosing unit heater relay is an OEM component. Refer to the OEM service manual for component location. Conditions for Running the DiagnosticsThis diagnostic runs when the aftertreatment diesel exhaust fluid dosing unit heater is commanded ON. Conditions for Setting the Fault CodesThe Engine Control Module (ECM) detected the...

Circuit DescriptionThe aftertreatment diesel exhaust fluid dosing unit heater relay is used to provide power to the aftertreatment diesel exhaust fluid dosing unit heater. The aftertreatment diesel exhaust fluid dosing unit heater is used to defrost and/or prevent freezing of the diesel exhaust fluid dosing unit. Component LocationThe aftertreatment diesel exhaust fluid dosing unit heater relay is an OEM component. Refer to the OEM service manual for component location. Conditions for Running the DiagnosticsThis diagnostic runs when the aftertreatment diesel exhaust fluid dosing unit heater is commanded OFF. Conditions for Setting the Fault CodesThe Engine Control Module (ECM) detected the...

Circuit DescriptionThe aftertreatment diesel exhaust fluid return valve is used to purge the aftertreatment diesel exhaust fluid dosing system. When the return valve is energized, the dosing system will purge and return the aftertreatment diesel exhaust fluid to the tank. Component LocationThe aftertreatment diesel exhaust fluid return valve is internal to the aftertreatment diesel exhaust fluid dosing unit and can not be serviced separately. Conditions for Running the DiagnosticsThis diagnostic only runs when the aftertreatment diesel exhaust fluid dosing system is purging. Conditions for Setting the Fault CodesThe Engine Control Module (ECM) detected the aftertreatment diesel exhaust fluid pressure did...

Circuit DescriptionThe aftertreatment diesel particulate filter temperature sensor module is a smart device that communicates with the engine control module via the J1939 data link. The aftertreatment diesel partculate filter temperature sensor module performs its own internal diagnostics and reports malfunctions back to the engine control module using the J1939 data link. The aftertreatment diesel particulate filter temperature sensor module is used to measure the aftertreatment diesel oxidation catalyst intake temperature, aftertreatment diesel particulate filter intake temperature, and aftertreatment diesel particulate filter outlet temperature. The temperature probes are permanently attached to the aftertreatment diesel particulate filter temperature sensor module and...