This Cummins 2739 troubleshooting document is a fault-code diagnostic manual for the ether injection circuit. It explains Fault Code 2739, the low-voltage condition on the Start Enable Device 1 Circuit, and the checks used to confirm wiring, solenoid, ECM, and calibration causes.
Official Cummins 2739 troubleshooting document details
| Brand | Cummins |
|---|---|
| Model coverage | ISX11.9 CM2250, ISX15 CM2250, GX CM2250; file listing references ISB6.7 CM2250 (2010-12) |
| System/Group | DTCs; Start Enable Device 1 Circuit (Ether Injection) |
| Publication no. | Not stated as a single document number; associated bulletin numbers include 4022250 and 2883445 |
| Year/Revision | Last Modified: 11-Jun-2010; troubleshooting section Last Modified: 30-Dec-2010 |
| Pages | 14 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- Overview
- Circuit Description
- Component Location
- Conditions for Running the Diagnostics
- FAULT CODE 2739
- 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 ether injection solenoid and circuit.
- Guided Step 3 – Check the ECM and OEM harness.
- Guided Step 4 – Check ECM calibration and clear fault codes.
Applicable truck models
The extract identifies the diagnostic as covering ISX11.9 CM2250 and ISX15 CM2250 ether injection circuit troubleshooting, with associated procedure references also listing GX CM2250. The file metadata supplied with the PDF places it in the Cummins ISB6.7 CM2250 (2010-12) DTC group, but the visible document text names ISX11.9 CM2250/ISX15 CM2250 and should be followed when matching the actual procedure content. The control solenoid location varies by OEM, so the document directs the user to the OEM service manual for component location and connector identification. For official manufacturer information, visit Cummins official website.
Who needs this Cummins 2739 troubleshooting manual
Workshop technicians, fleet mechanics, and diagnostic tool users need this manual when Fault Code 2739 is active or stored and the ether start function has been disabled. It is useful for confirming whether the problem is dirty connector pins, a shorted ether injection solenoid, a pin-to-ground short, a pin-to-pin short in the OEM harness, ECM issues, or an ECM calibration update requirement.
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