Circuit DescriptionThe aftertreatment diesel exhaust fluid tank temperature sensor is used to monitor the temperature of the aftertreatment diesel exhaust fluid inside the aftertreatment diesel exhaust fluid tank. Component LocationThe aftertreatment diesel exhaust fluid tank temperature sensor is located in the diesel exhaust fluid tank. Location of the tank and temperature sensor is OEM dependent. Refer to the OEM service manual. Conditions for Running the DiagnosticsThis diagnostic runs continuously when the keyswitch is in the ON position or when the engine is running. Conditions for Setting the Fault CodesThe Engine Control Module (ECM) detected a loss of communication with the...

Circuit DescriptionBecause engines and aftertreatment components are manufactured in different locations, they are shipped to OEM customers for final vehicle assembly. The process involves both hardware and software elements in detecting the correct match of aftertreatment system to engine model during initial engine to machine integration. Component LocationThe aftertreatment diesel particulate filter temperature sensor module is mounted on the aftertreatment diesel particulate filter. Conditions for Running the DiagnosticsThis diagnostic runs at key ON in the first 50 hours of engine run time. Conditions for Setting the Fault CodesThe Engine Control Module (ECM) detected the engine has been manufactured with the...

Circuit DescriptionBecause engines and aftertreatment components are manufactured in different locations, they are shipped to OEM customers for final vehicle assembly. The process involves both hardware and software elements in detecting the correct match of aftertreatment system to engine model during initial engine to machine integration. Component LocationThe aftertreatment SCR temperature sensor module is mounted on the aftertreatment SCR catalyst. Conditions for Running the DiagnosticsThis diagnostic runs at key ON in the first 50 hours of engine run time. Conditions for Setting the Fault CodesThe engine control module detects that the engine has been manufactured with the incorrect SCR Action...

Circuit DescriptionThe variable geometry turbocharger (VGT) is electronically activated by the VGT actuator. The VGT actuator is a smart device and receives information via the J1939 data link from the primary engine control module (ECM). The VGT actuator performs its own diagnostics and reports malfunctions back to the primary engine ECM, using the J1939 data link. The ECM then decodes the error message and converts it to a fault code. The exhaust gas recirculation (EGR) valve is controlled by a brushless motor located on top of the EGR valve. The EGR valve motor uses three different motor legs to move...

Circuit DescriptionThe engine control module (ECM) provides a 5 volt supply to the intake manifold pressure sensor on the sensor supply circuit. The ECM also provides a ground on the sensor return circuit. The intake manifold pressure sensor provides a signal to the ECM on the intake manifold pressure sensor signal circuit. This sensor signal voltage changes based on the pressure in the intake manifold. Component LocationThe intake manifold 1 pressure/temperature sensor is located in the air intake manifold. Conditions for Running the DiagnosticsThe diagnostic runs continuously when the following conditions are met: The engine is running.Ambient temperature is greater...