The Cummins fault code 187 troubleshooting manual is the official Cummins procedure for diagnosing Sensor Supply 2 Circuit – Voltage Below Normal or Shorted to Low Source. The sensor supply 2 pin of the electronic control module (ECM) provides volt for the camshaft position sensor, intake manifold pressure/temperature sensor, crankcase pressure sensor, engine oil pressure sensor (if equipped), turbocharger compressor intake pressure/temperature sensor (if equipped), and barometric pressure sensor (if equipped). The amber warning lamp behaviour, the exact conditions that set and clear the code, and the guided steps that isolate the Sensor Supply 2 Circuit are documented in order.
Cummins fault code 187 document details
| Brand | Cummins |
|---|---|
| Model coverage | Cummins ISX11.9 CM2250 (2010-12), ISX12 CM2250 (2010-12) engines |
| System / Group | ISX11.9 CM2250 (2010-12) / DTCs |
| Fault code | 187 — SPN 3510, FMI 4 |
| PID | S211 |
| Warning lamp | Amber |
| Year / Revision | 2010-12 (CM2250) |
| Pages | 23 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- Overview and Circuit Description
- Component Location
- Conditions for Running the Diagnostics
- Conditions for Setting the Fault Codes
- Action Taken When the Fault Code is Active
- Associated Procedures and Troubleshooting Steps
- Guided circuit-response and connector checks
- Conditions for Clearing the Fault Code
Applicable truck models covered
This document applies to Cummins ISX11.9 CM2250 (2010-12), ISX12 CM2250 (2010-12) engines, within the shared Cummins CM2250 platform diagnostics. The guided steps rely on the Cummins INSITE electronic service tool to read active fault codes, monitor sensor data and confirm the repair once the Sensor Supply 2 Circuit has been serviced. Always confirm engine and calibration coverage against the official Cummins engine support site before ordering parts.
Who needs this Cummins fault code 187 manual
Diesel technicians and workshop owners servicing Cummins CM2250 platform engines use this file to work SPN 3510, FMI 4 in the correct order instead of guessing at parts. It lists every conditions block, associated procedure and guided circuit-response check, with the connector and harness inspection points and the specification each step expects. Following the troubleshooting steps in sequence keeps the repair accountable and lets the technician confirm the fault is inactive once verified with the Cummins INSITE electronic service tool.
The full PDF, including the complete guided troubleshooting tree and specifications, is available in the DiagTechPro manuals library; a free account is required to download it.
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
