The ISM code 115 DTCs manual is a 2-page PDF that documents fault code 115, the engine magnetic speed/position circuit fault that reports both of two signals lost. It explains how the Hall-effect crankshaft and camshaft position sensors generate the engine speed and position signal, and warns that this code means the two sensor connectors are reversed so the engine will not start. The procedure is credited to TruckFaultCodes.com and covers the circuit description, component location and full troubleshooting steps.
Official document details
| Brand | Cummins |
| Model coverage | Cummins ISM CM871 and ISX CM871 (2007-09) engines |
| System / group | ISM CM871 (2007-09) / DTCs |
| Fault code | 115 (PID P190, SPN 612, FMI 2) |
| Pages | 2 |
| File size | 0.1 MB |
| Format | |
| Language | English |
Document table of contents
- Fault code 115 description
- Circuit description and ECM operation
- Component location
- Shop talk and possible causes
- Step-by-step troubleshooting flow
Applicable truck models
This diagnostic applies to Cummins ISM CM871 and ISX CM871 (2007-09) engines. The crankshaft and camshaft position sensor locations vary depending on the engine model. The usual cause is the camshaft and crankshaft position sensor harness connectors being reversed; on the ISM engine the two camshaft position sensor connectors are reversed. For engine data and authorised service, visit the Cummins official website.
Who needs this ISM code 115 DTCs manual
Heavy-duty diesel technicians, fleet workshops and owner-operators reach for this manual when fault code 115 is logged. It helps a technician diagnose a no-start complaint by confirming and correcting reversed position-sensor connectors before condemning a sensor or the ECM.
Download the code 115 DTCs PDF
The complete procedure, wiring detail and step tables are available in the DiagTechPro manuals library; a free account is required to download the PDF. Keep it alongside the related ISM CM871 fault-code sheets listed below.
Related manuals library
Sản phẩm liên quan cho hãng này
Cùng brand theo taxonomy hiện có trong catalog WooCommerce.
Cummins Calterm Version 5.16 – Advanced ECM Control and Precision Tuning for Cummins Engines
Cummins INSITE 9.3 – The Essential Diagnostic Tool for Cummins Engines
Cummins InCal CE – The Calibration and Configuration Tool for Cummins Engines
