The Cummins M11 145 sheet documents the coolant temperature sensor circuit (PID P110, SPN 110, FMI 4) on Cummins CELECT engines built from 1990 to 1994. This 6-page reference drives a technician through the circuit description, coolant temperature sensor location, and the pin-by-pin checks needed to turn the yellow lamp off.
Cummins M11 145: Official document details
| Brand | Cummins |
| Model coverage | M11 and N14 CELECT (1990-94) |
| System / Group | Coolant temperature sensor circuit |
| Fault code identifier | Code 145 · PID P110 · SPN 110 · FMI 4 · SRT 00-089 |
| Warning lamp | Yellow |
| Pages | 6 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- Circuit description
- Component location on M11 and N14
- Shop talk resistance table
- Sensor and harness connector inspection
- Short-circuit and open-circuit checks
- Troubleshooting Steps 1A to 5B
- Clearing inactive fault codes
Applicable truck models
This procedure applies to Cummins M11 CELECT engines built from 1990 to 1994 and shares the coolant temperature sensor logic used on N14 CELECT engines of the same era. It is a fault-code troubleshooting sheet from the CELECT diagnostic set (SRT 00-089), not a full engine manual, so confirm exact wiring and part numbers against factory data on the official Cummins website before replacing any component.
Cummins M11 145 diagnostic steps
After confirming related pressure and temperature codes are inactive, clean the sensor connector with electronic contact cleaner Part Number 3824510 and measure the coolant temperature sensor from pin A to pin B (175 ohms to 244k ohms). Check for a short to ground above 100k ohms, then inspect ECM pins 12 and 17 for opens (less than 10 ohms) and pin-to-pin shorts. Use jumper Part Number 3822917 between pins 12 and 17 to verify ECM response before clearing the code.
Who needs this Cummins M11 145 manual
Shop and roadside technicians use this sheet to chase an FMI 4 coolant temperature signal fault through the sensor, harness, and ECM in a fixed order that avoids replacing good parts.
The full PDF is available in the DiagTechPro manuals library; a free account is required to download.
Applies to these truck models
This is the manufacturer document shared across 2 model families. It applies to:
- Cummins DTCs
- Cummins M11 CELECT (1990-94)
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