This Cummins 2367 fault code document is a diagnostic troubleshooting file for the engine brake actuator driver output 2 circuit. It explains the voltage-above-normal or short-to-high-source condition, the effect on cylinders 4, 5, and 6, and the guided checks used with INSITE™ electronic service tool.
Official Cummins 2367 fault code document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB, ISC, and ISL with CM2150; ISB6.7 CM2150 (2007-09) group coverage |
| System/Group | Engine Brake Actuator Circuit / DTCs |
| Publication no. | Not specified in the extracted document |
| Year/Revision | Last Modified: 20-Jul-2010 |
| Pages | 13 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- Overview
- Circuit Description
- Component Location
- Conditions for Running the Diagnostics
- FAULT CODE 2367
- 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 engine brake solenoid and circuit.
- Guided Step 3 – Check the ECM and engine harness.
- Guided Step 4B – Clear the inactive fault codes.
Applicable truck models
This file applies to Cummins ISB, ISC, and ISL engines with CM2150 engine control, including ISB CM2100 and CM2150 references in the rocker lever cover procedure. The fault concerns the engine brake solenoid number 2 signal circuit, the 2-pin Weather Pack connector near the number 3 injector pass-through connector, the jumper harness to the rocker lever housing, and the engine brake solenoids under the valve cover. For manufacturer information, visit Cummins official website.
Who needs this Cummins 2367 fault code manual
This manual is for diesel mechanics, fleet technicians, and workshop owners diagnosing an amber CHECK ENGINE light with Fault Code 2367, PID S80, SPN 1073, and FMI 3/3. It is useful when checking open circuits, high voltage on the PWM signal, ECM connector condition, harness resistance, and pin-to-pin shorts before replacing parts.
The procedure identifies that the engine brake 2 circuit is disabled when the fault is active, so engine braking on cylinders 4, 5, and 6 cannot be activated. It lists possible causes such as an open circuit in the engine harness, brake harness, or engine brake solenoids, a short to voltage source in the engine harness, or a damaged ECM. The guided tests include resistance checks between 5 and 15 ohms, voltage checks greater than 3.75 VDC, continuity checks less than 10 ohms, and short checks greater than 100k ohms where specified by the document.
The file also directs users to related Cummins procedures for resistance measurements, component connector and pin inspection, engine wiring harness repair, ECM replacement authorization, and INSITE™ clearing of inactive fault codes. The full PDF is available in the DiagTechPro manuals library, free account required to download.
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