CM850 Electronic Control System – FAULT CODE 1711

Dosing Control Unit Data Link — Abnormal Update Rate


Overview

CODE REASON EFFECT
Fault Code: 1711
PID: 
SPN: 3361
FMI: 9
LAMP: Amber
SRT: 

Dosing Control Unit Data Link — Abnormal Update Rate. Data Link communications between the ECM and the Dosing Control Unit have been interrupted.

Catalyst solution injection into the aftertreatment system is disabled.

Circuit: Dosing Control Unit
SMALL | MEDIUM | LARGE

Circuit Description

The catalyst dosing unit communicates to the primary engine Electronic Control Module (ECM) through the J1939 public data link network. The Dosing Control Unit also receives battery supply, keyswitch input, and ground from the OEM vehicle.

Component Location

The Dosing Control Unit location is OEM dependent. Refer to the OEM troubleshooting manual for more information.

Shop Talk

Possible causes of this fault code include:

  • Loss of battery voltage to the Dosing Control Unit
  • Loss of battery ground to the Dosing Control Unit
  • Loss of keyswitch input to the Dosing Control Unit
  • Shorted or open J1939 data link wiring between the Dosing Control Unit and the primary engine ECM
  • Failed Dosing Control Unit
  • The external OEM controlling device has failed or can no longer transmit on the data link.

On-Board Diagnostics (OBD) Information (Euro 4 Certified Engines):

  • The ECM illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
  • The ECM turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail. The MIL lamp and fault code can also be cleared using the INSITE™ Electronic service tool.
  • The fault code will be cleared from memory after 40 consecutive drive cycles where the diagnostic runs and passes.

On-Board Diagnostics (OBD) Information (Euro 4 Stage 1+ Certified Engines):

  • The ECM illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
  • An engine torque derate will be activated after 50 hours of engine operation with the fault code active.
  • The ECM turns OFF the malfunction indicator lamp (MIL) after 1 ignition cycle that the diagnostic runs and does not fail. The MIL lamp cannot be cleared using the INSITE™ Electronic service tool.
  • The fault code will be cleared from memory after 400 days or 9600 hours of engine operation.

Refer to Troubleshooting Fault Code t05-1711

Last Modified:  08-Jul-2010