Cumminz
Cummins ISB4.5 CM2150 Fault Code: 451 PID: SPN: 157 FMI: 3 Injector Metering Rail 1 Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source.
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Circuit DescriptionThe fuel delivery pressure sensor responds to pressure changes in the fuel rail. The fuel delivery pressure sensor has a 5 volt supply circuit, a sensor signal voltage, and a return circuit. The electronic control module (ECM) provides a 5 volt supply to the fuel rail pressure sensor, using a common sensor supply circuit. The ECM also provides a ground on the sensor return circuit. The fuel rail pressure sensor provides a signal to the ECM on the fuel rail pressure sensor signal circuit. This sensor signal voltage changes, based on the pressure in the fuel rail. The ECM...
Cummins ISB4.5 CM2150 Fault Code: 452 PID: SPN: 157 FMI: 4 Injector Metering Rail 1 Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source.
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Circuit DescriptionThe fuel delivery pressure sensor responds to pressure changes in the fuel rail. The fuel delivery pressure sensor has a 5 volt supply circuit, a sensor signal voltage, and a return circuit. The electronic control module (ECM) provides a 5 volt supply to the fuel rail pressure sensor using a common sensor supply circuit. The ECM also provides a ground on the sensor return circuit. The fuel rail pressure sensor provides a signal to the ECM on the fuel rail pressure sensor signal circuit. This sensor signal voltage changes based on the pressure in the fuel rail. The ECM...
Cummins ISB4.5 CM2150 Fault Code: 452 PID: SPN: 157 FMI: 4 Injector Metering Rail 1 Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source.
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Cummins ISB4.5 CM2150 Fault Code: 4572 PID: SPN: 3031 FMI: 9 Aftertreatment 1 Diesel Exhaust Fluid Tank Temperature – Abnormal Update Rate
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Circuit DescriptionNormally, switches, accelerators, and other components are connected to the engine control module (ECM) through individual wires. Multiplexing allows those same components to be hard wired to an original equipment manufacturer (OEM) vehicle electronic unit or transmission electronic control unit in the cab. Then, component values and states from components, such as sensors, accelerators, and switches, can be transmitted from the OEM vehicle electronic control unit to the Cummins® engine ECM over the SAE J1939 data link. Messages sent from OEM vehicle electronic control units are received by the Cummins® engine ECM and used for controlling the engine. The...
Cummins ISB4.5 CM2150 Fault Code: 4642 PID: SPN: 97 FMI: 0 Water-in-Fuel Indicator – Data Valid But Above Normal Operating Rage – Moderately Sever Level.
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Circuit DescriptionThe water-in-fuel sensor is attached to the fuel filter. The engine control module (ECM) provides a 5 volt reference signal to the water-in-fuel sensor. When the water collected in the fuel filter covers the sensor probes, the water-in-fuel sensor pulls the 5 VDC reference voltage to ground, indicating high water accumulation in the fuel filter. Component LocationThe water-in-fuel sensor is integrated into the bottom of the original equipment manufacturer (OEM) supplied suction fuel filter. Conditions for Running the DiagnosticsThis diagnostic runs continuously when the engine is running. Conditions for Setting the Fault CodesThe ECM detects water in fuel for...