This Cummins code 584 troubleshooting document covers Fault Code 584 for the starter relay driver circuit on CM2250 engines. It explains the circuit description, fault conditions, INSITE™ checks, relay tests, OEM harness tests, ECM calibration review, and fault clearing steps. The file is a 14-page English PDF used for diagnosing an amber CHECK ENGINE light linked to the starter lockout relay circuit.
Official Cummins code 584 troubleshooting document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250, with associated CM2250 models listed in the procedure table |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; Starter Relay Circuit |
| Publication no. | 4022254 for ISB6.7 CM2250 in the associated procedures table |
| Year/Revision | Last Modified: 11-Jun-2010 and 20-Jul-2010 |
| Pages | 14 |
| 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 starter lockout relay circuit.
- Guided Step 3 – Check the ECM and OEM harness.
- Guided Step 4 – Check ECM calibration and clear fault codes.
Applicable truck models
The procedure is tied to Cummins ISB6.7 CM2250 DTC coverage and appears in a wider CM2250 starter relay circuit family that also lists ISC8.3 and ISL9 CM2250, ISX15 CM2250, ISX11.9 CM2250, QSL9 CM2250, and QSB6.7 CM2250. The document also notes that the starter lockout relay is installed by the vehicle OEM, so component location and return circuit details must be checked in the OEM service manual and OEM wiring diagram. For official brand information, visit Cummins.
Who needs this Cummins code 584 troubleshooting manual
Workshop owners, diesel mechanics, and electrical diagnostic technicians need this Cummins code 584 troubleshooting manual when Fault Code 584, PID S39, SPN 677, FMI 3 is active or stored. It is most useful when checking for an open circuit, short circuit to a voltage source, dirty or damaged pins, relay resistance below 10k ohms, return circuit resistance below 10 ohms, OEM harness continuity below 10 ohms, and pin-to-pin resistance greater than 100k ohms.
The troubleshooting flow starts with active or inactive fault code status in INSITE™ electronic service tool, then moves through the starter lockout relay, relay connector, return circuit, ECM connector, and OEM harness. The final steps cover ECM calibration code review, disabling and clearing the fault code, and validating the repair by operating the engine under the listed clearing conditions. Full PDF available in the DiagTechPro manuals library, free account required to download.
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