This Cummins code 2777 manual is a 5-page diagnostic document for Fault Code 2777 on ISB6.7 CM2150 engines. It explains why active regeneration of the diesel particulate filter was inhibited by a permit switch or J1939 inhibit message, and how the fault relates to high aftertreatment soot load codes.
Official Cummins code 2777 manual document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2150, 2007-09 |
| System/Group | Aftertreatment System / DTCs |
| Publication no. | Not shown in the extract |
| Year/Revision | Last Modified: 20-Jul-2010 |
| Pages | 5 |
| 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 1A – Check for active fault codes.
- Guided Step 2 – Clear the fault code.
- Guided Step 2A – Disable the fault code.
- Guided Step 2B – Clear the inactive fault codes.
Applicable truck models
This document applies to Cummins ISB6.7 CM2150 engines in the 2007-09 coverage group. The extract also references ISB CM2150 engines and compares aftertreatment testing procedures for ISC and ISL CM2150 engines, but the file information identifies the document group as ISB6.7 CM2150 DTCs. The diesel particulate filter is located in the exhaust system and is installed by the OEM, while the permit switch may be a dash switch or a J1939 datalink message. For manufacturer information, visit Cummins official website.
Who needs this Cummins code 2777 manual
Mechanics, fleet technicians, and workshop owners need this Cummins code 2777 manual when Fault Code 2777 is active with Fault Code 1921, 1922, or 2639 for high soot load. The procedure focuses on reading active fault codes with INSITE™ electronic service tool, verifying whether the fault is inactive, and clearing inactive fault codes after the aftertreatment issue has been addressed.
The document states that Fault Code 2777 has PID 390, SPN 3703, and FMI 11/31, with no lamp and no performance effect listed. It says the diagnostic runs continuously with the keyswitch on, and the ECM sets the fault active immediately after the diagnostic is set. The fault clears inactive when Fault Code 1921, 1922, or 2639 are inactive. Shop Talk also instructs technicians to verify the ECM calibration, check QuickServe® Online calibration revision history for applicable fixes, and recalibrate if required under Procedure 019-032 in Section 19 of the relevant troubleshooting and repair manual.
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