This code 324 DTCs document is a troubleshooting manual for the Injector Solenoid Driver Cylinder 3 Circuit fault on CM2150 engines. It explains the circuit description, fault conditions, connector inspections, harness checks, injector isolation steps, ECM authorization path, and final clearing procedure. The file is a 31-page English PDF for workshop diagnostic use.
Official code 324 DTCs document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2150 (2007-09); extract also references ISC and ISL CM2150 procedures |
| System/Group | DTCs; injector circuit; Injector Solenoid Driver Cylinder 3 Circuit – Current Below Normal or Open Circuit |
| Publication no. | Not specified for this PDF; referenced service manual bulletins include 4021578 and 4021569 |
| Year/Revision | Year unknown; last modified entries shown as 03-Aug-2010 and 12-Oct-2010 |
| Pages | 31 |
| 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
- Troubleshooting Steps
- Guided Step 1 – Check for active fault codes
- Guided Step 2 – Check the injector harness
- Guided Step 3 – Check the engine harness
- Guided Step 5B – Clear the inactive fault codes
Applicable truck models
This file applies to Cummins ISB6.7 CM2150 engines from the 2007-09 coverage group. The procedure also references ISB Series 6.7L Engines (CM2100 and CM2150 Common Rail Fuel System) Service Manual, Bulletin 4021578, and ISC and ISL CM2150 Service Manual, Bulletin 4021569, for related removal, installation, and repair procedures. Confirm the engine calibration and service information for the exact engine being serviced through Cummins official website.
Who needs this code 324 DTCs manual
Mechanics, fleet technicians, and workshop owners need this manual when an amber CHECK ENGINE light is linked to SPN 653 FMI 5 and cylinder 3 injector current is below normal or open circuit. It helps separate injector solenoid, internal injector harness, engine harness, connector pin, bank short, and damaged ECM possibilities.
The diagnostic path starts with active fault codes and bank grouping, including Bank 1 fault codes 322, 324, and 331, plus Bank 2 fault codes 323, 325, and 332. It then uses visual inspections, resistance checks, pass-through connector checks, injector disconnection tests, and INSITE electronic service tool steps to clear and recheck codes after idling for 1 minute. Full PDF available in the DiagTechPro manuals library, free account required to download.
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