This Cummins 2347 troubleshooting manual covers Fault Code 2347 for calculated turbocharger compressor outlet temperature on CM2250 engines. It explains the circuit description, fault logic, likely causes, INSITE™ checks, sensor accuracy tests, ECM calibration review, and fault clearing procedure.
Official Cummins 2347 troubleshooting manual document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX11.9 CM2250, ISX15 CM2250, QSB6.7 CM2250, QSL9 CM2250 |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; Turbocharger Compressor Outlet Temperature Circuit |
| Publication no. | Not specified; associated bulletin numbers include 4022254, 4022257, 4022250, 2883445, 4022256, and 4022255 |
| Year/Revision | Last Modified: 20-Jul-2010; overview last modified 11-Jun-2010 |
| Pages | 9 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Overview
- Circuit Description
- Component Location
- FAULT CODE 2347 – Turbocharger Compressor Outlet Temperature (Calculated) – Data Valid But Above Normal Operating Range – Least Severe Level
- 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 sensor readings
- Guided Step 3 – Check ECM calibration and clear fault codes
Applicable truck models
This file applies to Cummins CM2250 engine families listed in the extract, including ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX11.9 CM2250, ISX15 CM2250, QSB6.7 CM2250, and QSL9 CM2250. The fault concerns a calculated temperature, not a physical turbocharger compressor outlet temperature sensor; the ECM derives the value from operating inputs such as turbocharger compressor intake air temperature, barometric pressure, turbocharger speed, engine speed, intake manifold air temperature, and intake manifold pressure. Manufacturer reference: Cummins official website.
Who needs this Cummins 2347 troubleshooting manual manual
Mechanics and workshop owners need this document when INSITE™ shows SPN 2629 FMI 15/15 or Fault Code 2347 and the engine limits fuel to reduce calculated compressor outlet temperature. It is useful for checking related turbocharger fault codes, comparing Barometric Air Pressure to local pressure, checking Intake Manifold Pressure with the engine off, reviewing ECM calibration, and confirming that the fault code becomes inactive.
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