Cummins ISM Code 254 documents the Fuel Shutoff Valve Solenoid Supply Circuit diagnostic and troubleshooting procedure for the Cummins ISM CM570 (1999-02) engine platform. This 6-page fault code sheet from TruckFaultCodes.com (Copyright 2017) covers fault code 254 (PID S017, SPN 632, FMI 4/4, RED lamp) and the checks used to confirm and clear it.
Official document details
| Brand | Cummins |
|---|---|
| Model coverage | ISM CM570, ISX CM570, Signature CM570 (1999-02) |
| System / Group | Diagnostic Trouble Codes (DTCs) |
| Fault code | 254 — PID S017, SPN 632, FMI 4/4 |
| Warning lamp | RED |
| Pages | 6 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- Circuit description
- Component location
- Shop talk
- Troubleshooting steps
- Fault code verification and clearing
Cummins ISM Code 254 diagnostic steps
The procedure first checks for extra spliced wires and corrosion on the fuel shutoff valve solenoid post, then measures the supply voltage (more than +6 VDC) at the solenoid. Technicians inspect the actuator harness and ECM connector pins, measure resistance from pin 33 of the actuator harness to the control wire (less than 10 ohms) and pin-to-pin (more than 100k ohms), and verify solenoid resistance against the voltage table before restarting the engine and clearing the code.
Applicable truck models
This sheet applies to Cummins ISM CM570, ISX CM570, and Signature CM570 (1999-02) engines built around the CM570 ECM and the fuel shutoff valve solenoid. The fuel shutoff valve solenoid is on the fuel delivery housing above the fuel filter. The document is laid out with a circuit description, a component location note, shop-talk tips, and a step-by-step troubleshooting chart whose go-to branches route the technician through each measurement. Refer to the official Cummins engine support site for wiring diagrams and component part numbers.
Who needs this Cummins ISM Code 254 manual
Heavy-duty diesel technicians, fleet service teams, and owner-operators diagnosing a red-lamp fuel shutoff valve solenoid fault will use this sheet to follow the factory decision tree, confirm the reading, and repair the harness, connector, or component instead of replacing parts on guesswork. It spells out each measurement threshold and its pass or fail branch, so the fault can be verified active, the repair validated, and the inactive code cleared with the diagnostic tool.
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