This Cummins 598 fault code document is a troubleshooting manual for very low electrical charging system voltage detected by the ECM battery voltage monitor. It explains Fault Code 598, PID P167, SPN 167, FMI 1, the red STOP ENGINE lamp action, and the guided checks needed to confirm repair with INSITE™ electronic service tool.
Official Cummins 598 fault code document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250; also references ISX11.9 CM2250, ISC8.3 and ISL9 CM2250, ISX15 CM2250, QSL9 CM2250, QSB6.7 CM2250, GX15 CM2250, and other listed CM2150/CM2220 models in the Associated Procedures 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 | Last Modified: 11-Jun-2010; troubleshooting section Last Modified: 18-Jan-2011 |
| Pages | 12 |
| 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
- FAULT CODE 598 – Electrical Charging System Voltage – Data Valid But Below Normal Operating Range – Most Severe Level
- Associated Procedures
- Troubleshooting Steps
- Guided Step 1 – Check the equipment battery system.
- Guided Step 2 – Check the alternator and OEM harness.
- Guided Step 3 – Check ECM calibration and clear fault codes.
Applicable truck models
This PDF is centered on Cummins ISB6.7 CM2250 DTC troubleshooting and the ECM Power Supply Circuit. The associated procedures table also lists ECM Calibration Code procedure 019-032 for ISF2.8 CM2220 E, ISF2.8 CM2220 AN, ISF3.8 CM2220, ISF3.8 CM2220 AN, ISB4.5, ISB6.7, ISD4.5, ISD6.7 CM2150 SN, ISL8.9 CM2150 SN, ISM11 CM876 SN, ISZ13 CM2150, ISC8.3 and ISL9 CM2250, ISX15 CM2250, GX15 CM2250, ISX11.9 CM2250, QSL9 CM2250, and QSB6.7 CM2250. For official product information, visit Cummins official website.
Who needs this Cummins 598 fault code manual
Mechanics, electrical technicians, and workshop owners need this 598 fault code manual when a truck has a red STOP ENGINE lamp and battery voltage is below the calibrated operating range. The procedure supports checks of battery cables, alternator output, OEM harness power connectors, unswitched battery supply resistance, pin-to-pin shorts, accessory wiring at the positive battery terminal, and ECM calibration status.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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