This Cummins fault 3495 document is a troubleshooting PDF for diesel particulate filter active regeneration inhibited due to low exhaust gas temperature. It explains the fault condition, sensor logic, ECM response, clearing conditions, and guided diagnostic steps using INSITE™ electronic service tool. The file is intended for service work on CM2250 engines listed in the source extract.
Official Cummins fault 3495 document details
| Brand | Cummins |
|---|---|
| Model coverage | ISX11.9 CM2250, ISX15 CM2250, GX CM2250; file listing also references ISB6.7 CM2250 (2010-12) |
| System/Group | DTCs; aftertreatment system; diesel particulate filter active regeneration |
| Publication no. | Not shown in the extract; associated bulletin numbers include 4022250 and 2883445 |
| Year/Revision | Last Modified: 11-Jun-2010 and 09-Dec-2010 |
| Pages | 18 |
| 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 exhaust system for leaks
- Guided Step 3 – Check the variable geometry turbocharger (VGT) actuator
- Guided Step 4 – Check the air intake system for leaks
- ECM Calibration
Applicable truck models
The extract identifies this diagnostic procedure for ISX11.9 CM2250, ISX15 CM2250, and GX CM2250 engine models in the associated procedures table. The file information also places the document in the Cummins ISB6.7 CM2250 (2010-12) DTCs group, but the sampled pages themselves show ECM coverage for ISX11.9 CM2250 and ISX15 CM2250. Use it where the engine family and ECM calibration match the vehicle being diagnosed. Manufacturer information is available from Cummins official website.
Who needs this Cummins fault 3495 manual
Workshop owners, diesel technicians, and fleet mechanics need this manual when an amber CHECK ENGINE lamp or MIL is linked to SPN 3711 FMI 31 and active regeneration is inhibited. It supports checks for exhaust leaks, aftertreatment exhaust gas temperature sensor faults, charge-air cooler leaks, VGT actuator condition, turbocharger mechanical travel, and ECM calibration status.
The troubleshooting logic starts with active fault code checks, then directs the user through sensor-related codes, exhaust leak inspection, VGT connector and actuator inspection, sector gear travel checks, air intake leak checks, and final validation. The fault is set when diesel oxidation catalyst intake temperature is less than 150°C [302°F] for 5 minutes after engine start, and the repair is validated by starting the engine and idling for 5 minutes until the diagnostic runs and passes. Full PDF available in the DiagTechPro manuals library, free account required to download.
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