This document is a Cummins 2363 brake fault troubleshooting PDF for Code 2363 on the engine brake actuator driver output 2 circuit. It explains the circuit description, fault conditions, diagnostic steps, INSITE clearing process, and related Cummins service procedures for CM2250 engines.
Official Cummins 2363 brake fault document details
| Brand | Cummins |
|---|---|
| Model coverage | ISX11.9 CM2250, ISX15 CM2250, GX CM2250, QSL9 CM2250, ISC8.3 and ISL9 CM2250, QSB6.7 CM2250 |
| System/Group | Engine brake actuator driver output 2 circuit / DTCs |
| Publication no. | Bulletin numbers referenced: 4022250, 2883445, 4022256, 4022257, 4022255 |
| Year/Revision | Last modified dates shown: 20-Oct-2009, 11-Jun-2010, 28-Dec-2010, 20-Jul-2010 |
| Pages | 29 |
| File size | 0.5 MB |
| Format | |
| Language | English |
Document table of contents
- Fault Code Path Selection
- Overview
- Circuit Description
- Component Location
- Conditions for Running the Diagnostics
- FAULT CODE 2363 (Heavy Duty)
- 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 3C – Check for a pin-to-ground short circuit.
- Guided Step 4B – Disable the fault codes.
Applicable truck models
This Cummins service extract covers CM2250 engine applications named in the procedure tables, including ISX11.9 CM2250, ISX15 CM2250, GX CM2250, QSL9 CM2250, ISC8.3 and ISL9 CM2250, and QSB6.7 CM2250. The file is focused on Fault Code 2363, SPN 1073, FMI 4/4, where low voltage is detected at the engine brake solenoid number 2 signal circuit and engine brakes on cylinders 4, 5, and 6 can not be activated. For manufacturer information, visit Cummins official website.
Who needs this Cummins 2363 brake fault manual
This Cummins 2363 brake fault manual is useful for diesel mechanics, fleet workshops, and diagnostic technicians checking engine brake solenoid number 2 faults with INSITE™ electronic service tool. It supports checks for short circuit to ground, damaged harnesses, ECM connector pin damage, diagnostic supply voltage greater than 3.75-VDC, and solenoid resistance greater than 5 ohms.
The procedure links Code 2363 diagnosis to Rocker Lever Cover, Electronic Control Module (ECM), ECM Calibration Code, Engine Wiring Harness, Internal Actuator Wiring Harness, and Engine Brake Solenoid Valve service procedures. The repair flow includes checking active or inactive fault counts, inspecting the engine brake pass-through connector, testing the internal actuator wiring harness, checking pin-to-ground shorts, reviewing calibration revision history, then disabling and clearing fault codes after operating the engine under the stated clearing conditions.
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