This code 331 DTCs document is a troubleshooting PDF for the injector solenoid driver cylinder 2 circuit. It explains current-below-normal or open-circuit diagnostics, amber lamp behavior, injector disable conditions, harness checks, resistance tests, and INSITE™ electronic service tool verification. The file is Code 331.pdf, 33 pages, 0.4 MB, in English.
Official code 331 DTCs document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX11.9 CM2250, ISX15 CM2250, QSL9 CM2250 as referenced in associated procedures |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; Injector Solenoid Driver Cylinder 2 Circuit |
| Publication no. | Associated procedure bulletins include 4022254, 4022257, 4022250, 2883445, and 4022256 |
| Year/Revision | Last Modified: 26-Aug-2010; troubleshooting section Last Modified: 11-Oct-2010 |
| Pages | 33 |
| File size | 0.4 MB |
| Format | |
| Language | English |
Document table of contents
- Overview
- FAULT CODE 331 – Injector Solenoid Driver Cylinder 2 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 2 – Check the injector and injector circuit for an open circuit.
- Guided Step 2A – Inspect the engine harness connections.
- Guided Step 2D-4 – Check for an open circuit.
- Guided Step 3C – Inspect the engine harness.
- Guided Step 4B – Check for active fault codes.
- Guided Step 5B – Clear the inactive fault codes.
Applicable truck models
This diagnostic information applies to Cummins CM2250 engine families named in the file: ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX11.9 CM2250, ISX15 CM2250, and QSL9 CM2250. The fault is for injector 2, with PID S2, SPN 652, FMI 5/5, and an amber lamp response. The procedures reference rocker lever cover, injector, engine harness, connector inspection, resistance measurement, pass-through connectors, injector harnesses, and ECM-related fault isolation. For manufacturer information, visit Cummins official website.
Who needs this code 331 DTCs manual
Workshop technicians, fleet mechanics, and diagnostic tool users need this manual when an engine misfires, runs rough, disables cylinder 2 injection, or logs injector faults in the same bank. It is also useful when checking for open circuits, short circuits to ground, damaged connector pins, rubbed harness insulation near rocker levers, or remaining active codes after repair.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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