Cumminz

Circuit DescriptionThe aftertreatment diesel exhaust fluid controller communicates to the primary engine Electronic Control Module (ECM) through the J1939 public data link network. The aftertreatment diesel exhaust fluid controller also receives battery supply, keyswitch input, and ground from the OEM vehicle. Component LocationThe aftertreatment diesel exhaust fluid controller location is OEM dependent. Refer to the OEM service manual for more information. Conditions for Running the DiagnosticsThis diagnostic runs continuously when the keyswitch is in the ON position. Conditions for Setting the Fault CodesData link communications between the ECM and the aftertreatment diesel exhaust fluid controller have been lost. Action Taken...

Circuit DescriptionThe aftertreatment diesel exhaust fluid controller is the central control for the aftertreatment diesel exhaust fluid dosing system, and handles the dosing activity, tank level sensing, tank temperature sensing, line heating, and tank heating. It communicates to the engine ECM via a J1939 data link connection. Component LocationThe location of the aftertreatment diesel exhaust fluid controller varies by application and OEM. The controller will typically be mounted to the vehicle frame or suitable rigid bracket using 3 or 4 capscrews. Refer to the OEM service manual for a more detailed component location description. Conditions for Running the DiagnosticsThis diagnostic...

Circuit DescriptionThe diesel exhaust fluid dosing unit performs many functions, one of which is to generate adequate diesel exhaust fluid pressure in the lines using a pump to allow for dosing. The diesel exhaust fluid controller provides a battery voltage supply and a ground to the diesel exhaust fluid dosing unit. The controller also supplies a signal to the dosing unit to control the diesel exhaust fluid output. This signal changes based on the diesel exhaust fluid pressure being commanded. Component LocationThe aftertreatment diesel exhaust fluid dosing unit location is OEM dependent. Refer to the OEM service manual for more...

Circuit DescriptionThe VGT is electronically activated by the VGT actuator. The VGT actuator is a smart device that receives information via the J1939 data link from the primary engine control module (ECM). The VGT actuator performs its own diagnostics and reports errors back to the primary engine ECM with the J1939 data link. Component LocationThe VGT actuator is located on the turbocharger bearing housing. Conditions for Running the DiagnosticsThis diagnostic runs continuously when the keyswitch is initially turned to the ON position and periodically when the engine is running. The keyswitch must be completely turned OFF for more than 30...

Circuit DescriptionThe aftertreatment diesel exhaust fluid controller is air cooled, and is equipped with an internal temperature sensor, which monitors the temperature inside the controller during opertion. The diesel exhaust fluid controller communicates this temperature reading to the engine ECM via a J1939 datalink connection. Component LocationThe aftertreatment diesel exhaust fluid controller in equipped with an internal temperature sensor, which monitors the temperature inside the controller during opertion. This temperature sensor is internal to the diesel exhaust fluid controller and cannot be service separately. Conditions for Running the DiagnosticsThis diagnostic runs during normal operation when dosing is being commanded by...