This Cummins 3223 fault code document is a troubleshooting manual for the aftertreatment purge air actuator circuit. It explains the circuit description, fault effects, diagnostic conditions, guided electrical checks, ECM calibration review, and clearing procedure for Fault Code 3223, SPN 3490 FMI 4.
Official Cummins 3223 fault code document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250 (2010-12) file group; extract also lists ISX15 CM2250, ISX11.9 CM2250, QSL9 CM2250, and QSB6.7 CM2250 in associated procedures. |
| System/Group | DTCs; aftertreatment purge air actuator circuit; aftertreatment diesel particulate filter regeneration. |
| Publication no. | Associated bulletin numbers shown: 4022250, 2883445, 4022256, 4022255. |
| Year/Revision | Year unknown; last modified 11-Jun-2010 and 20-Jul-2010 in extracted sections. |
| Pages | 14 |
| 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
- FAULT CODE 3223 – Aftertreatment Purge Air Actuator Circuit – Voltage Below Normal, or Shorted to Low Source
- 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 aftertreatment purge air actuator and circuit.
- Guided Step 3 – Check the ECM and engine harness.
- Guided Step 4 – Check ECM calibration and clear fault codes.
Applicable truck models
This file applies to Cummins CM2250 engine troubleshooting where Fault Code 3223 is used for the aftertreatment purge air actuator circuit. The associated procedure table names ISX15 CM2250, ISX11.9 CM2250, QSL9 CM2250, and QSB6.7 CM2250, while the library group identifies ISB6.7 CM2250 (2010-12). See the official Cummins website for manufacturer information.
Who needs this Cummins 3223 fault code manual
This manual is useful for diesel technicians, fleet maintenance staff, and workshop owners diagnosing low signal voltage, short-to-low-source, open circuit, short-to-ground, and pin-to-pin short faults in the aftertreatment purge air actuator circuit. It also supports INSITE™ electronic service tool checks, resistance tests, harness inspection, actuator replacement decisions, and ECM calibration review.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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