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Cummins ISB4.5 CM2150 Fault Code: 556 PID: 101 SPN: 101 FMI: 0 Crankcase Pressure – Data Valid But Above Normal Operating Range – Most Severe Level.
Publicado por Diezel Solutions en
Circuit DescriptionThe pressure inside the crankcase is measured by the crankcase pressure sensor. When the crankcase pressure sensor determines that the crankcase pressure is higher than normal, this fault code is logged. Component LocationThe crankcase pressure sensor is located near the crankcase ventilation filter. Conditions for Running the DiagnosticsThis diagnostic runs continuously when the engine speed is greater than 500 rpm. Conditions for Setting the Fault CodesThe ECM detects that the crankcase pressure is greater than a calibrated value. Action Taken When the Fault Code is Active-The ECM illuminates the red STOP ENGINE lamp when the crankcase pressure limit is...
Cummins ISB4.5 CM2150 Fault Code: 559 PID: SPN: 157 FMI: 18 Injector Metering Rail 1 Pressure – Data Valid But Below Normal Operating Range – Moderately Severe Level.
Publicado por Diezel Solutions en
Circuit DescriptionThe pressure control loop relies on fuel pressure supplied to the high-pressure pump by the fuel gear pump. The engine control module (ECM) monitors rail fuel pressure and engine operating conditions and changes the flow command to maintain the proper rail fuel pressure. Changes to the flow command result in opening (or closing) of the fuel pump actuator to supply more (or less) fuel to the high-pressure pump. Component LocationThe high-pressure fuel pump is mounted to the gear housing on the intake side of the engine. Conditions for Running the DiagnosticsThis diagnostic runs continuously when the engine is operating....
Cummins ISB4.5 CM2150 Fault Code: 559 PID: 157 SPN: 157 FMI: 18 Injector Metering Rail 1 Pressure – Data Valid but Below Normal Operating Range – Moderately Severe Level.
Publicado por Diezel Solutions en
Circuit DescriptionThe pressure control loop relies on fuel pressure supplied to the high-pressure pump by the fuel gear pump. The electronic control module (ECM) monitors rail fuel pressure and engine operating conditions and changes the flow command to maintain the proper rail fuel pressure. Changes to the flow command result in opening (or closing) of the fuel pump actuator to supply more (or less) fuel to the high-pressure pump. Component LocationThe fuel rail pressure sensor is mounted to the fuel rail. Conditions for Running the DiagnosticsThis diagnostic runs continuously when the engine is operating. Conditions for Setting the Fault CodesThe...
Cummins ISB4.5 CM2150 Fault Code: 584 PID: SID 39 SPN: 677 FMI: 3 Starter Relay Driver Circuit – Voltage Above Normal or Shorted to High Source.
Publicado por Diezel Solutions en
Circuit DescriptionThe starter lockout relay is controlled by the engine control module (ECM) through the starter lockout relay signal circuit. The relay prevents the starter from being engaged when the engine is running. The relay return circuit is dependent on OEM wiring. It could be wired back to the ECM on some vehicles, or wired to chassis or block ground on others. Refer to the OEM wiring diagram for return circuit details. The starter lockout relay 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...
Cummins ISB4.5 CM2150 Fault Code: 585 PID: SID 39 SPN: 677 FMI: 4 Starter Relay Driver Circuit – Voltage Below Normal or Shorted to Low Source.
Publicado por Diezel Solutions en
Circuit DescriptionThe starter lockout relay is controlled by the engine control module (ECM) through the starter lockout relay signal circuit. The relay prevents the starter from being engaged when the engine is running. The relay return circuit is dependent on OEM wiring. It could be wired back to the ECM on some vehicles or wired to chassis or block ground on others. Refer to the OEM wiring diagram for return circuit details. The starter lockout relay 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...