This Cummins 597 troubleshooting document is a 12-page fault code procedure for low electrical charging system voltage on CM2250 engine control systems. It explains Fault Code 597, SPN 167 FMI 18, the ECM power supply circuit, likely causes, diagnostic conditions, and guided repair checks using INSITE™ electronic service tool.
Official Cummins 597 troubleshooting document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250; associated listings also show ISC8.3 and ISL9 CM2250, ISX15 CM2250, ISX11.9 CM2250, QSL9 CM2250, QSB6.7 CM2250, GX CM2250, and other Cummins platforms in the procedure table. |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; ECM Power Supply Circuit |
| Publication no. | 4022254 for ISB6.7 CM2250 in the associated procedures table |
| Year/Revision | Unknown; summary last modified 11-Jun-2010, troubleshooting last modified 18-Jan-2011 |
| Pages | 12 |
| File size | 0.4 MB |
| Format | |
| Language | English |
Document table of contents
- Overview
- Circuit Description
- Component Location
- Conditions for Running the Diagnostics
- FAULT CODE 597 – Electrical Charging System Voltage – Data Valid But Below Normal Operating Range – Moderately Severe Level
- 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 equipment battery system.
- Guided Step 2 – Check the alternator and power harness.
- Guided Step 3 – Check ECM calibration and clear fault codes.
Applicable truck models
This file applies to Cummins ISB6.7 CM2250 fault diagnosis for the ECM power supply circuit and the Battery Voltage Monitor feature. The associated procedures table also references related Cummins engine models including ISC8.3 and ISL9 CM2250, ISX15 CM2250, ISX11.9 CM2250, QSL9 CM2250, QSB6.7 CM2250, ISF2.8 CM2220, ISF3.8 CM2220, ISB4.5, ISD4.5, ISD6.7, ISL8.9 CM2150, ISM11 CM876, and ISZ13 CM2150; vehicle battery location and alternator specifications are OEM-dependent. See the manufacturer at Cummins official website.
Who needs this Cummins 597 troubleshooting manual
Workshop owners, diesel mechanics, and fleet technicians need this manual when an amber CHECK ENGINE lamp appears with Fault Code 597 and low battery voltage is detected. The procedure supports checks for battery voltage, alternator output, open circuits, short circuits, add-on accessory wiring, OEM power harness faults, ECM calibration updates, and clearing the code with INSITE™ electronic service tool.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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