This Cummins 3139 fault code document is a troubleshooting PDF for an Engine Air Shutoff Circuit voltage-above-normal or short-to-high-source condition. It explains how Fault Code 3139, SPN 3667 FMI 3/3, disables the engine air shutoff valve and turns on the amber CHECK ENGINE lamp or MIL when the diagnostic fails. The procedure is written for service work using INSITE™ electronic service tool, OEM wiring information, and Cummins associated procedures.
Official Cummins 3139 fault code document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250; also references ISC8.3 and ISL9 CM2250, ISX15 CM2250, GX CM2250, and ISX11.9 CM2250 in associated procedure tables |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; Engine Air Shutoff Circuit |
| Publication no. | Not stated for this PDF; associated bulletins include 4022254, 4022257, 4022250, and 2883445 |
| Year/Revision | Year unknown; Last Modified: 11-Jun-2010 and 04-Jan-2011 |
| Pages | 13 |
| 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 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 the engine air shutoff solenoid and circuit
- Guided Step 3 – Check the ECM and engine harness
- Guided Step 4 – Check ECM calibration and clear fault codes
Applicable truck models
This file applies to Cummins CM2250 engine platforms identified in the extract, with the primary library grouping for ISB6.7 CM2250 (2010-12) DTCs. The associated procedure table also lists ISC8.3 and ISL9 CM2250, ISX15 CM2250, GX CM2250, and ISX11.9 CM2250, while the engine air shutoff valve itself is OEM installed and its location can vary by vehicle manufacturer. For brand information, see the Cummins official website.
Who needs this Cummins 3139 fault code manual
Workshop technicians need this 3139 fault code manual when diagnosing an active or inactive air shutoff circuit fault with INSITE™. It is useful for checking solenoid connector pins, signal and return circuit resistance, pin-to-pin shorts, ECM connector condition, calibration revision, and repair validation.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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