This code 3374 DTCs troubleshooting document explains the Roll Over Protection Brake Control Active condition and the related cruise control inhibit message. It identifies the SAE J1939 data link and anti-lock braking system controller as the source of the message received by the ECM. The file is a 6-page English PDF for workshop reference.
Official code 3374 DTCs troubleshooting document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX11.9 CM2250, ISX15 CM2250, GX CM2250 |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; Roll Over Protection Brake Control Active Circuit |
| Year/Revision | Last Modified: 08-Dec-2010; summary section Last Modified: 11-Jun-2010 |
| Pages | 6 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Overview
- Circuit Description
- Component Location
- Conditions for Running the Diagnostics
- FAULT CODE 3374
- 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 fault codes.
- Guided Step 2 – Check ECM calibration and clear fault codes.
- Guided Step 2B – Disable the fault code.
Applicable truck models
This procedure applies to the Cummins CM2250 engine families named in the document: ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX11.9 CM2250, ISX15 CM2250, and GX CM2250. The extract does not name specific truck makes or chassis models because the SAE J1939 data link wiring and ABS controller location vary by OEM, so it directs technicians to the OEM service manual for those locations. See the manufacturer source at Cummins official website.
Who needs this code 3374 DTCs troubleshooting manual
This code 3374 DTCs troubleshooting manual is useful for diesel mechanics, fleet technicians, and workshop owners checking why cruise control has temporarily stopped operating after an ABS controller message. It supports service decisions by showing that the fault is information-only, then directing the technician to verify active or inactive status, check ECM calibration, and clear or disable the fault with INSITE™ electronic service tool.
The document states that Fault Code 3374 is set when cruise control has been inhibited due to certain driving conditions detected by the anti-lock braking (ABS) controller. The ECM logs the code immediately when the diagnostic runs and fails, and cruise control is temporarily inhibited. Clearing validation requires starting the engine and letting it idle for 1 minute; INSITE™ electronic service tool can show the status changing to inactive after the diagnostic passes, and “Reset All Faults” can clear active and inactive faults. Full PDF available in the DiagTechPro manuals library, free account required to download.
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