This fault code 323 DTCs document is a troubleshooting manual for an injector solenoid driver cylinder 5 circuit fault. It explains the fault reason, circuit behavior, diagnostic conditions, INSITE™ checks, harness inspections, injector tests, and repair validation steps for affected CM2250 engines.
Official fault code 323 DTCs document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250; ISC8.3 and ISL9 CM2250; ISX11.9 CM2250; ISX15 CM2250; QSL9 CM2250 references in associated procedures |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; Injector Solenoid Driver Cylinder 5 Circuit |
| Publication no. | Not specified for this file; associated bulletin numbers shown include 4022254, 4022257, 4022250, 2883445, and 4022256 |
| Year/Revision | Last modified 26-Aug-2010 and 11-Oct-2010; year unknown in file data |
| Pages | 31 |
| File size | 0.4 MB |
| Format | |
| Language | English |
Document table of contents
- Overview
- FAULT CODE 323 – Injector Solenoid Driver Cylinder 5 Circuit – Current Below Normal or Open Circuit
- 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
- Guided Step 1 – Read the fault codes with INSITE™ electronic service tool
- Guided Step 2 – Check the injector and injector circuit for an open circuit
- Guided Step 3B-2 – Check the injector solenoids for short circuits to ground
- Guided Step 4B – Check for active fault codes
- Guided Step 5B – Clear the inactive fault codes
Applicable truck models
This file applies to Cummins CM2250 engine fault diagnostics where Fault Code 323, PID S5, SPN 655, FMI 5/5 is used for injector solenoid driver cylinder 5 current below normal or open circuit. The extract names ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX11.9 CM2250, ISX15 CM2250, and associated QSL9 CM2250 service procedure coverage. For official engine and service information, visit Cummins.
Who needs this fault code 323 DTCs manual
Workshop owners, diesel technicians, and fleet mechanics need this code 323 DTCs manual when diagnosing a rough-running or misfiring engine with an amber CHECK ENGINE light or MIL. It is especially useful when checking whether the cause is an open circuit, high resistance, short to ground, damaged injector harness, pass-through connector fault, injector solenoid fault, or possible ECM damage.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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