cumminz
Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 2376 PID: PID 412 SPN: 412 FMI: 4 Exhaust Gas Recirculation Temperature Sensor Circuit- Voltage Below Normal or Shorted to Low Source
Posted by PerDiezel Solutions on
Circuit DescriptionThe exhaust gas recirculation (EGR) temperature sensor is a variable resistor sensor and is used to measure the temperature of the EGR gas flow after it exits the EGR cooler. The engine control module (ECM) supplies 5 volts to the EGR temperature signal circuit. The ECM monitors the change in voltage caused by changes in the resistance of the sensor to determine the EGR flow temperature. The EGR temperature value is used by the ECM for the engine protection system and engine emissions control. Component LocationThe EGR temperature sensor is located on the EGR connection tube between the EGR...
Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 2377 PID: SID 33 SPN: 647 FMI: 3 Fan Control Circuit- Voltage Above Normal or Shorted to High Source
Posted by PerDiezel Solutions on
Circuit DescriptionThe fan control circuit is a device used by the engine to control the fan operation. When the engine control module (ECM) energizes the fan control circuit, the engine fan is engaged. The fan control circuit utilizes a pulse width modulated (PWM) signal. A PWM signal is a pulsed voltage signal between 0-VDC and system voltage. The frequency of the pulsed voltage signal is dependent on the application requirement. There are two types of fans supported by the fan control circuit; variable speed and ON/OFF. INSITE™ electronic service tool can be used to determine which fan type is currently...
Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 238 PID: PID 105 SPN: 3511 FMI: 4 Sensor Supply 3 Circuit- Voltage Below Normal or Shorted to Low Source
Posted by PerDiezel Solutions on
Circuit DescriptionThe sensor supply 3 circuit provides a 5 volt supply to the primary engine speed/position sensor. Component LocationSensor Supply 3 originates in the engine wiring harness. It provides 5 VDC to the engine crankshaft speed/position sensor. 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 the sensor supply 3 signal voltage was less than a 4.8-VDC for more than 1 second. Action Taken When the Fault Code is ActiveThe ECM illuminates the amber CHECK ENGINE...
Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 2387 PID: SID 27 SPN: 641 FMI: 7 VGT Actuator Driver Circuit (Motor)- Mechanical System Not Responding or Out Of Adjustment
Posted by PerDiezel Solutions on
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. Component LocationThe VGT actuator is located on the turbocharger bearing housing. Conditions for Running the DiagnosticsThis diagnostic has to meet specific engine and aftertreatment conditions to run and complete. Conditions...
Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 239 PID: SID 232 SPN: 3511 FMI: 3 Sensor Supply 3 Circuit- Voltage Above Normal or Shorted to High Source
Posted by PerDiezel Solutions on
Circuit DescriptionThe sensor supply 3 circuit provides a 5 volt supply to the primary engine speed/position sensor. Component LocationSensor Supply 3 originates in the engine wiring harness. It provides 5 VDC to the engine crankshaft speed/position sensor. 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 the sensor supply 3 signal voltage was greater than 5.25-VDC for more than 1 second. Action Taken When the Fault Code is ActiveThe ECM illuminates the amber CHECK ENGINE lamp...
