This Cummins ISB sensor supply document is a 10-page PDF diagnostic manual for Fault Code 2186 on CM2150 engines. It explains a low-voltage condition on sensor supply 4, which feeds the accelerator pedal position sensor through the ECM 5 volt supply circuit. The file is aimed at technicians using INSITE™ and OEM wiring information to isolate sensor, connector, harness, or ECM-related causes.
Official Cummins ISB sensor supply document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB, ISC, and ISL with CM2150; file group notes ISB6.7 CM2150 (2007-09) |
| System/Group | DTCs; Accelerator Pedal Position Sensor Supply Voltage Circuit |
| Year/Revision | Last Modified: 20-Jul-2010; model year unknown |
| Pages | 10 |
| File size | 0.3 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 sensors and circuits connected to the sensor supply and return.
- Guided Step 3 – Check the ECM and OEM harness.
- Guided Step 4 – Clear the fault codes.
Applicable truck models
This procedure applies to Cummins ISB, ISC, and ISL engines with CM2150 control, with the file classification identifying ISB6.7 CM2150 (2007-09). The document states that the accelerator pedal is located in the cab and directs users to the original equipment manufacturer troubleshooting and repair manual for component location, connector identification, and related wiring details. For manufacturer information, visit Cummins official website.
Who needs this Cummins ISB sensor supply manual
Workshop owners, diesel mechanics, and electrical diagnostic technicians need this ISB sensor supply manual when Fault Code 2186 is active or intermittent and the ECM reports sensor supply 4 voltage below normal or shorted to a low source. It supports checks for dirty or damaged pins, pin-to-pin shorts, pin-to-ground shorts, OEM harness faults, and accelerator pedal/lever position sensor response.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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