Cummins ISM code 546 is the DiagTechPro reference page for this Cummins diagnostic fault code 546 document, a 5-page PDF sourced from TruckFaultCodes.com (Copyright 2017) covering the lamp: amber fuel delivery pressure sensor circuit – voltage above normal, or shorted to high source isx – condition. The fuel delivery pressure sensor responds to pressure changes in the fuel manifold of the integrated fuel system module. The fuel delivery pressure sensor has a 5-VDC supply circuit, a sensor signal voltage, and a return circuit. When the condition is detected the ECM logs the fault and illuminates the amber warning lamp.
Cummins ISM code 546 document details
| Brand | Cummins |
|---|---|
| Model coverage | Fuel Delivery Pressure Sensor (ISM CM871, 2007-09) |
| System / Group | ISM CM871 (2007-09) / DTCs |
| Fault identifier | Code 546 (PID P094, SPN 94, FMI 3/3) |
| Warning lamp | Amber |
| Source | TruckFaultCodes.com |
| Year / Revision | Copyright 2017 |
| Pages | 5 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- Circuit Description
- Component Location
- Shop Talk
- Troubleshooting Steps
- Repair verification and clearing fault codes
Applicable truck models
This document applies to Cummins Fuel Delivery Pressure Sensor electronic engines in the ISM CM871 (2007-09) family used in on-highway and vocational trucks. The rail fuel pressure sensor is located on the bottom front corner of the integrated fuel system module. Verify the electronic control module (ECM) calibration is correct. If necessary, recalibrate the ECM. The troubleshooting section walks through connector and pin inspection, circuit measurements and step-by-step checks, then confirms code 546 is inactive before all fault codes are cleared. Verify engine calibration and coverage against the official Cummins engine support site before ordering parts.
Who needs this Cummins ISM code 546 manual
Any mechanic or workshop owner diagnosing ISM code 546 needs this PDF to follow the factory diagnostic steps in the correct order and avoid replacing parts that are still good. The rail fuel pressure sensor shares supply and return wires in the engine harness with other sensors.
Related manuals library
The full PDF is available in the DiagTechPro manuals library; a free account is required to download.
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