This 7-page Cummins 3697 fault code troubleshooting document covers diagnostic and repair procedures for Fault Code 3697 — Engine Control Module Calibration Memory Bad Intelligent Device or Component. It applies to multiple Cummins engine platforms including the ISB6.7 CM2250, ISX15 CM2250, ISX11.9 CM2250, and related models, providing step-by-step instructions for identifying and resolving internal ECM software or calibration errors.
Official Cummins 3697 fault code document details
| Brand | Cummins |
| Model coverage | ISB6.7 CM2250, ISX15 CM2250, ISX11.9 CM2250, ISC8.3 CM2250, ISL9 CM2250, QSB6.7 CM2250, QSL9 CM2250, ISF3.8 CM2220, ISF2.8 CM2220, ISB4.5 CM2150, ISD4.5 CM2150, ISD6.7 CM2150, ISL8.9 CM2150, ISZ13 CM2150, GX CM2250 |
| System/Group | DTCs — Engine Control Module Calibration Memory |
| Publication no. | — |
| Year/Revision | Last modified 28-Dec-2010 |
| Pages | 7 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Overview — Circuit Description
- Component Location
- Conditions for Running the Diagnostics
- Conditions for Setting the Fault Code
- Fault Code 3697 — SPN 630, FMI 12, PID S254
- Action Taken When the Fault Code is Active
- Conditions for Clearing the Fault Code
- Shop Talk
- Associated Procedures — ECM Calibration Code (Procedure 019-032)
- Step 1 — Check the Fault Codes (Fault Code 111 check)
- Step 2 — Recalibrate the ECM
- Step 3 — Check ECM Calibration and Clear Fault Codes
- Step 3B — Disable the Fault Code
Applicable truck models
This document covers Cummins engines fitted in medium- and heavy-duty trucks and equipment: ISB6.7 CM2250 (2010–2012), ISX15 CM2250, ISX11.9 CM2250, ISC8.3 and ISL9 CM2250, QSB6.7 CM2250, QSL9 CM2250, ISF2.8 and ISF3.8 CM2220, ISB4.5 and ISD4.5/ISD6.7 CM2150, ISL8.9 CM2150, ISZ13 CM2150, and GX CM2250. The diagnostic runs continuously when the keyswitch is ON, and the ECM illuminates the red STOP ENGINE lamp or MIL when it fails. Troubleshooting requires the INSITE electronic service tool for reading codes, recalibrating the ECM, and verifying repairs. If recalibration does not resolve the fault, authorization to replace the ECM is required per Procedure 019-031. For official engine support documentation, visit Cummins official website.
Who needs this Cummins 3697 fault code manual
Diesel mechanics, fleet technicians, and workshop owners servicing Cummins CM2250 or CM2150 engines who encounter a Fault Code 3697 with an amber lamp and a no-start condition need this guide. It provides the exact INSITE-based workflow to diagnose whether the ECM requires recalibration or replacement.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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