This Cummins 3563 fault code document explains diagnostics for the aftertreatment diesel exhaust fluid line heater relay on CM2250 engines. It covers fault conditions, possible causes, guided electrical checks, ECM calibration review, and clearing steps using INSITE™ electronic service tool.
Official Cummins 3563 fault code document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250; also references ISX11.9 CM2250, ISC8.3 and ISL9 CM2250, ISX15 CM2250, QSC8.3 and ISL9 CM2250, GX CM2250, ISF2.8 CM2220, and ISF3.8 CM2220 AN in associated procedures |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; Aftertreatment Diesel Exhaust Fluid Line Heater Circuit |
| Publication no. | Not specified for this file; associated procedure tables reference bulletin numbers including 4022254, 4022257, 4022250, 2883445, 4022178, and 4021704 |
| Year/Revision | Last Modified: 07-Dec-2010; overview section also shows 11-Jun-2010 |
| Pages | 11 |
| 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 aftertreatment diesel exhaust fluid controller and harness.
- Guided Step 3 – Check the aftertreatment diesel exhaust fluid line heater relay.
- Guided Step 4 – Check ECM calibration and clear fault codes.
Applicable truck models
This file is listed for Cummins ISB6.7 CM2250 DTCs and describes Fault Code 3563, SPN 5491 FMI 4, for the aftertreatment diesel exhaust fluid line heater relay. The extracted procedure also names ISX11.9 CM2250, ISC8.3 and ISL9 CM2250, ISX15 CM2250, QSC8.3 and ISL9 CM2250, GX CM2250, ISF2.8 CM2220, and ISF3.8 CM2220 AN in the associated procedures table, but relay location remains OEM dependent and the document directs users to the OEM service manual. For manufacturer information, visit the Cummins official website.
Who needs this Cummins 3563 fault code manual
Workshop owners, diesel technicians, and fleet mechanics need this 3563 fault code manual when line heaters 1, 2, and 3 are disabled and the amber CHECK ENGINE lamp or MIL is active. It supports diagnosis of shorts to ground, dirty or damaged pins, controller harness issues, relay connector faults, and possible aftertreatment diesel exhaust fluid controller replacement.
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