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Reason:At Least One Unacknowledged Moderately Severe Fault – Condition Exists Effect:None on performance Circuit Description:There is at least one unacknowleged moderately severe fault in the system. Component Location:The reset button or switch location depends on the original equipment manufacturer (OEM). Refer to the OEM troubleshooting and repair manual for component location. Conditions for Running the Diagnostics:This diagnostic runs continuously when the keyswitch is in the ON position or when the engine is running. Conditions for Setting the Fault Codes:The Engine Control Module (ECM) detected a fault that has not set the lamp within a calibrated threshold. Action Taken When the...

Reason:At Least One Unacknowledged Moderately Severe Fault – Condition Exists Effect:None on performance Circuit Description:There is at least one unacknowleged moderately severe fault in the system. Component Location:The reset button or switch location depends on the original equipment manufacturer (OEM). Refer to the OEM troubleshooting and repair manual for component location. Conditions for Running the Diagnostics:This diagnostic runs continuously when the keyswitch is in the ON position or when the engine is running. Conditions for Setting the Fault Codes:The Engine Control Module (ECM) detected a fault that has not set the lamp within a calibrated threshold. Action Taken When the...

Reason:Antitheft Password Valid Indicator – Data Erratic, Intermittent, or Incorrect. Engine ignition attempt without authorization from the immobilizer anti-theft device. Effect:The engine will not start. Circuit Description:The immobilizer anti-theft device is connected to the primary engine electronic control module (ECM) through a J1939 data link network. Messages sent from the immobilizer anti-theft device are received by the Cummins® ECM and are used to control the anti-theft features. The Cummins® ECM and immobilizer anti theft device must be configured properly so that proper operation of the multiplexed components will occur. Component Location:The J1939 data link wiring and location of original equipment...

Reason:Antitheft Password Valid Indicator – Data Erratic, Intermittent, or Incorrect. Engine ignition attempt without authorization from the immobilizer anti-theft device. Effect:The engine will not start. Circuit Description:The immobilizer anti-theft device is connected to the primary engine electronic control module (ECM) through a J1939 data link network. Messages sent from the immobilizer anti-theft device are received by the Cummins® ECM and are used to control the anti-theft features. The Cummins® ECM and immobilizer anti theft device must be configured properly so that proper operation of the multiplexed components will occur. Component Location:The J1939 data link wiring and location of original equipment...

Reason:Engine Fuel Pump Pressurizing Assembly 1 Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage is detected at the fuel pump actuator circuit. Effect:Possible reduced engine performance. Circuit Description:The circuit is a pulse-width modulation (PWM) driver in the engine control module (ECM) that controls the fuel pump actuator. The actuator is grounded in the ECM. The actuator is normally open. The PWM duty cycle to the fuel pump actuator depends on the difference between desired rail pressure and sensed rail pressure. Component Location:The high-pressure fuel pump is mounted to the gear housing. The fuel pump actuator...