ISM code 145 DTCs identifies a engine Coolant Temperature 1 Sensor Circuit – Voltage Below Normal or Shorted to Low Source on the Cummins ISM CM871 (2007-09) engine, and this five-page PDF documents SPN 110 / FMI 4/4 (PID P110) in full. It sets out the fault description, component location, shop-talk notes, and a step-by-step troubleshooting tree so a technician can confirm and clear the code with a diagnostic tool.
ISM code 145 DTCs document details
| Brand | Cummins |
| Model coverage | ISM CM871 (2007-09) and ISX CM871 (2007-09) |
| System / Group | DTCs / Engine Coolant Temperature 1 Sensor Circuit |
| PID / SPN / FMI | P110 / SPN 110 / FMI 4/4 |
| Warning lamp | Amber |
| Source | TruckFaultCodes.com fault-code library (© 2017) |
| Pages | 5 |
| File size | 0.2 MB |
| Format / Language | PDF / English |
Fault description and meaning
The engine coolant temperature sensor is a variable-resistor sensor used to measure coolant temperature. The ECM supplies 5 volts to the signal circuit and monitors the change in voltage caused by the change in sensor resistance to determine coolant temperature. This document is filed under fault code 145, engine Coolant Temperature 1 Sensor Circuit – Voltage Below Normal or Shorted to Low Source. The condition raises a amber warning lamp on the dash. Because the sensor shares supply and return wires in the engine harness with other sensors, the manual advises checking for multiple active faults before starting the 145 procedure.
Document table of contents
- Fault code information: PID P110, SPN 110, FMI 4/4, lamp amber
- Description
- Component location
- Shop Talk
- Troubleshooting steps (harness, connector, and ECM checks)
- Circuit-repair verification and code clearing
Applicable truck models
This procedure applies to Cummins ISM CM871 (2007-09) engines. The identical fault code and engine coolant temperature 1 sensor circuit also appear in the parallel Cummins ISX CM871 (2007-09) listing. The troubleshooting steps inspect the engine coolant temperature 1 sensor circuit connector pins, verify the 4.75 to 5.25 VDC supply across the sensor, and confirm the fault goes inactive with a diagnostic tool after any repair. Cummins publishes the authoritative service data for these engines on its official website.
Who needs this ISM code 145 DTCs manual
Fleet technicians and workshop owners diagnosing engine coolant temperature 1 sensor circuit complaints on 2007-09 emissions-era Cummins engines need this sheet to work the fault methodically. It pairs with the wider Cummins ISM CM871 DTC set for full engine-harness coverage.
Related manuals library
The complete PDF is available in the DiagTechPro manuals library; a free account is required to download it.
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
