This code 325 DTCs document is a troubleshooting manual for the injector solenoid driver cylinder 6 circuit on CM2250 engines. It explains the amber lamp fault, SPN 656 FMI 5/5, possible misfire or rough running, circuit checks, harness inspection, injector testing, and INSITE™ electronic service tool validation.
Official code 325 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 |
| Publication no. | Not stated in the extract |
| Year/Revision | Last Modified: 26-Aug-2010 and 11-Oct-2010 |
| Pages | 33 |
| File size | 0.4 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
- Guided Step 1 – Check for active fault codes.
- Guided Step 2 – Check the injector and injector circuit for an open circuit.
- Guided Step 2A – Inspect the engine harness connections.
- Guided Step 3C – Inspect the engine harness.
- Guided Step 4B – Check for active fault codes.
- Guided Step 5A – Disable the fault code.
- Guided Step 5B – Clear the inactive fault codes.
Applicable truck models
This file applies to Cummins CM2250 engine diagnostic coverage shown in the extract, including ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX11.9 CM2250, and ISX15 CM2250 injector solenoid driver cylinder 6 circuit troubleshooting. The associated procedures table also lists QSL9 CM2250 procedure references for rocker lever cover and injector service. For manufacturer information, visit Cummins official website.
Who needs this code 325 DTCs manual
Workshop owners, diesel technicians, and fleet mechanics need this manual when diagnosing Fault Code: 325, PID: S6, SPN: 656, FMI: 5/5 with an amber CHECK ENGINE light or MIL. The procedures support practical checks for open circuits, short circuits to ground, dirty or damaged pins, pass-through connector issues, injector harness insulation damage, and injector 6 replacement decisions.
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