This Cummins Code 111 document is a fault-code troubleshooting guide for an ECM critical internal failure on ISB6.7 CM2150 engines. It explains the circuit description, fault conditions, STOP ENGINE lamp behavior, ECM calibration checks, and guided INSITE™ service tool steps. The file is a 5-page PDF for workshop diagnosis, not a general engine repair manual.
Official Cummins Code 111 document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2150 (2007-09); extract also references ISB, ISC, and ISL electronic control module context |
| System/Group | DTCs; Electronic Control Module Critical Internal Failure – Bad Intelligent Device or Component |
| Publication no. | Not shown in the extract |
| Year/Revision | Last Modified: 20-Jul-2010 |
| Pages | 5 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Overview
- Electronic Control Module Critical Internal Failure – Bad Intelligent Device or Component
- Circuit Description
- Component Location
- Conditions for Running the Diagnostics
- Conditions for Setting the Fault Codes
- Action Taken When the Fault Code is Active
- Conditions for Clearing the Fault Code
- Shop Talk
- Associated Procedures
- Troubleshooting Steps
- Guided Step 1 – Check the ECM
- Guided Step 1A – Check the ECM
- Guided Step 1B – Check the inactive counts of Fault Code 111
- Guided Step 2 – Clear the fault codes
- Guided Step 2A – Disable the fault code
- Guided Step 2B – Clear the inactive fault codes
Applicable truck models
This document applies to Cummins ISB6.7 CM2150 engines in the 2007-09 group, with the extract also identifying ISB, ISC, and ISL electronic control module coverage for the fault-code subject. The fault description is for Fault Code 111, PID S254, SPN 629, FMI 12/12, where the ECM detects an internal read or write error related to memory hardware failures or internal ECM voltage supply circuits. For official manufacturer information, visit Cummins.
Who needs this Cummins Code 111 manual
Mechanics, diagnostic technicians, and fleet workshop owners need this Cummins Code 111 manual when a red STOP ENGINE light appears and INSITE™ reports an ECM internal failure. The procedure helps confirm whether the fault is inactive, check inactive counts, clear inactive fault codes, and determine when ECM replacement authorization is required.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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