Cummins ISB4.5 CM2150 Fault Code: 1711 PID: SPN: 3361 FMI: 9 Aftertreatment Diesel Exhaust Fluid Dosing Unit – Abnormal Update Rate.

Circuit Description
The aftertreatment diesel exhaust fluid dosing unit communicates to the primary engine electronic control module (ECM) through the J1939 public data link network. The aftertreatment diesel exhaust fluid dosing unit also receives battery supply, keyswitch input, and ground from the OEM vehicle.

Component Location
The aftertreatment diesel exhaust fluid dosing unit location is OEM dependent. Refer to the OEM service manual for component location.

Conditions for Running the Diagnostics
This diagnostic runs continuously when the keyswitch is in the ON position.

Conditions for Setting the Fault Codes
Data link communications between the ECM and the aftertreatment diesel exhaust fluid dosing unit have been lost.

Action Taken When the Fault Code is Active
-The ECM illuminates the amber CHECK ENGINE lamp and/or the MIL immediately after the diagnostic runs and fails.
-Engine torque will be reduced.

Conditions for Clearing the Fault Code
-This fault code can not be cleared with INSITE™ electronic service tool.
-To validate the repair, start the engine and let it idle for 1 minute.
-The ECM will turn off the amber CHECK ENGINE light and/or MIL immediately after the diagnostic runs and passes.
-Use INSITE™ electronic service tool to verify that the fault code is inactive.
-The inactive fault code will be cleared from memory after 9600 hours of engine operation without a re-occurrence.

Possible Causes
-Loss of battery voltage to the aftertreatment diesel exhaust fluid dosing unit
-Loss of battery ground to the aftertreatment diesel exhaust fluid dosing unit
-Loss of keyswitch input to the aftertreatment diesel exhaust fluid dosing unit
-Shorted or open J1939 data link wiring between the aftertreatment diesel exhaust fluid dosing unit and the primary engine ECM
-Malfunctioning aftertreatment diesel exhaust fluid dosing unit.