This Cummins 2265 troubleshooting manual is a fault-code service document for the electric lift pump for engine fuel supply circuit. It covers Fault Code 2265, SPN 1075 FMI 3, with Heavy Duty and Midrange diagnostic paths for high voltage or short-to-high-source conditions. The file is useful when an amber CHECK ENGINE lamp appears and INSITE™ reports the lift pump circuit fault.
Official Cummins 2265 troubleshooting manual document details
| Brand | Cummins |
|---|---|
| Model coverage | Heavy Duty and Midrange engines; extract lists ISX11.9 CM2250, ISX15 CM2250, QSL9 CM2250, and ISB6.7 CM2250 group coverage. |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; electric fuel lift pump circuit and engine fuel supply circuit diagnostics. |
| Publication no. | Not shown. Associated bulletin numbers shown: 4022250, 2883445, 4022256. |
| Year/Revision | Last Modified dates shown: 20-Nov-2009, 11-Jun-2010, and 20-Jul-2010. |
| Pages | 28 |
| File size | 0.5 MB |
| Format | |
| Language | English |
Document table of contents
- FAULT CODE 145-fc2265 Fault Code Path Selection
- FAULT CODE 2265 (Heavy Duty) – Electric Lift Pump for Engine Fuel Supply Circuit – Voltage Above Normal or Shorted to High Source
- 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 fuel lift pump relay
- Guided Step 3 – Check the ECM and engine harness
- Guided Step 4 – Check ECM calibration and clear fault codes
- FAULT CODE 2265 (Midrange) – Electric Lift Pump for Engine Fuel Supply Circuit – Voltage Above Normal or Shorted to High Source
- Guided Step 2 – Check the electric fuel control lift pump
Applicable truck models
This document applies to Cummins CM2250 engine platforms identified in the extract, including ISX11.9 CM2250, ISX15 CM2250, QSL9 CM2250, and the ISB6.7 CM2250 DTC group. The procedures are engine and circuit specific, not truck-chassis specific, and they reference INSITE™ electronic service tool checks, ECM connector inspections, engine harness testing, fuel lift pump relay checks, diagnostic supply voltage checks, resistance checks below 10 ohms, short-circuit checks above 100k ohms, ECM calibration review, and fault clearing. See the manufacturer at Cummins official website.
Who needs this Cummins 2265 troubleshooting manual manual
Workshop owners, diesel mechanics, and fleet technicians need this file when diagnosing an electric lift pump that is disabled, difficult starting complaints, active or intermittent open circuit conditions, loose pins, bad connections, connector moisture, damaged seals, or possible aftermarket wiring to the lift pump. The Cummins 2265 troubleshooting manual also helps confirm when to repair or replace the engine harness, clean connector pins, calibrate the ECM under Procedure 019-032, or contact a Cummins® Authorized Repair Location after all steps have been completed.
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