This Cummins DPF fault 3322 document is a troubleshooting manual for Fault Code 3322, covering the aftertreatment diesel particulate filter outlet temperature sensor circuit. It explains why SPN 3246 FMI 2 sets, what the ECM does when the fault is active, and how to validate the repair with INSITE™ electronic service tool.
Official Cummins DPF fault 3322 document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX15 CM2250, GX CM2250, ISX11.9 CM2250, QSL9 CM2250, QSB6.7 CM2250 |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; aftertreatment diesel particulate filter outlet temperature sensor circuit |
| Publication no. | Not shown in extract; associated bulletin numbers include 4022254, 4022257, 4022250, 2883445, 4022256, and 4022255 |
| Year/Revision | Unknown; last modified dates shown: 28-Jan-2011 and 08-Dec-2010 |
| Pages | 16 |
| 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 1A – Check for fault codes.
- Guided Step 2 – Check the aftertreatment diesel particulate filter outlet temperature sensor and circuit.
- Guided Step 3 – Check the aftertreatment DPF temperature sensor interface module.
- Guided Step 4C – Check for a pin-to-ground short circuit.
- Guided Step 5B – Disable the fault code.
Applicable truck models
This manual applies to Cummins CM2250 engine families listed in the extract, including ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX15 CM2250, GX CM2250, ISX11.9 CM2250, QSL9 CM2250, and QSB6.7 CM2250. The fault concerns the aftertreatment diesel particulate filter outlet temperature sensor, the aftertreatment DPF temperature sensor interface module, ECM calibration, and OEM harness checks. For manufacturer information, visit Cummins official website.
Who needs this Cummins DPF fault 3322 manual
Workshop owners, diesel mechanics, and fleet technicians need this DPF fault 3322 manual when an amber CHECK ENGINE lamp, MIL, disabled diesel exhaust fluid injection, or disabled active and stationary regeneration is linked to Fault Code 3322. The procedures support fault isolation using INSITE™ electronic service tool, resistance checks, connector inspection, jumper-wire circuit response testing, and ECM calibration review.
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