G : General C : Cummins Engine application equipment S : Scania Engine application equipment 3-26 3-24-2 DTC Diagnostic Criteria Application HCESPN FMI G C S 831 2 (When mounting the A/C Controller) 10 seconds continuous, A/C controller Communication Data Error (Results / Symptoms) 1. Control Function – A/C Controller malfunction 841 2 10 seconds continuous, ECM Communication Data Error (Results /Symptoms) 1. Control Function – ECM operation failure 842 2 10 seconds continuous, TCU Communication Data Error (Results / Symptoms) 1. Control Function – TCU operation failure 844 2 10 seconds continuous, Monitor Communication Data Error (Results / Symptoms) 1.
Control Function – Monitor operation failure 850 2 (When mounting the RMCU) 90 seconds continuous, RMCU Communication Data Error (Results / Symptoms) 1. Control Function – RMCU operation failure 861 2 (When mounting the EHCU) 10 seconds continuous, EHCU Communication Data Error (Results / Symptoms) 1. Control Function – EHCU operation failure 869 2 (When mounting the BKCU) 10 seconds continuous, BKCU Communication Data Error (Results / Symptoms) 1. Control Function – BKCU operation failure