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Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 6257 PID: SPN: 168 FMI: 17 Battery 1 Voltage- Data Valid But Below Normal Operating Range- Least Severe Level
Posted by PerDiezel Solutions on
Circuit DescriptionThe engine control module (ECM) receives constant voltage from the batteries through the unswitched battery wires that are connected directly to the positive (+) battery post. The ECM receives switched battery input through the keyswitch wire when the keyswitch is turned ON. Component LocationThe ECM is connected to the battery by the OEM harness. This direct link provides a constant power supply for the ECM. The location of the battery will vary with the original equipment manufacturer (OEM). Refer to the OEM service manual. Conditions for Running the DiagnosticsThis diagnostic runs continuously when the keyswitch is in the ON...
Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 6258 PID: SPN: 1075 FMI: 3 Electric Lift Pump For Engine Fuel Supply- Voltage Above Normal or Shorted to High Source
Posted by PerDiezel Solutions on
Circuit DescriptionThe fuel lift pump circuit is a discrete output in the engine control module (ECM) that controls the electric fuel lift pump. The lift pump is grounded in the ECM. Component LocationThe fuel lift pump is mounted on the intake side of the engine. Conditions for Running the DiagnosticsThis diagnostic runs when the keyswitch is in the ON position and the lift pump timer has expired 1 minute after initial key ON. Conditions for Setting the Fault CodesThe Engine Control Module (ECM) detected the fuel lift pump signal circuit was detected to be greater than 0-VDC when the signal...
Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 6259 PID: SPN: 1075 FMI: 4 Electric Lift Pump For Engine Fuel Supply- Voltage Below Normal or Shorted to Low Source
Posted by PerDiezel Solutions on
Circuit DescriptionThe fuel lift pump circuit is a discrete output in the engine control module (ECM) that controls the electric fuel lift pump. The lift pump is grounded in the ECM. Component LocationThe fuel lift pump is mounted on the intake side of the engine. Conditions for Running the DiagnosticsThis diagnostic runs when the keyswitch is initially turned to the ON position. Conditions for Setting the Fault CodesThe Engine Control Module (ECM) detected the fuel lift pump signal circuit was detected to be 0-VDC when the signal is turned ON by the engine control module (ECM). Action Taken When the...
Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 6261 PID: SPN: 677 FMI: 3 Engine Starter Motor Relay Circuit- Voltage Above Normal or Shorted to High Source
Posted by PerDiezel Solutions on
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 can be wired back to the ECM on some vehicles or wired to chassis or block ground on others. Consult 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 the...
Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 6262 PID: SPN: 677 FMI: 4 Engine Starter Motor Relay Circuit- Voltage Below Normal or Shorted to Low Source
Posted by PerDiezel Solutions on
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 can be wired back to the ECM on some vehicles or wired to chassis or block ground on others. Consult 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 the...
