The Cummins M11 144 sheet documents the coolant temperature sensor circuit (PID P110, SPN 110, FMI 3) on Cummins CELECT engines built from 1990 to 1994. This 4-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 144: Official document details
| Brand | Cummins |
| Model coverage | M11 and N14 CELECT (1990-94) |
| System / Group | Coolant temperature sensor circuit |
| Fault code identifier | Code 144 · PID P110 · SPN 110 · FMI 3 · SRT 00-088 |
| Warning lamp | Yellow |
| Pages | 4 |
| 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
- ECM connector checks
- Troubleshooting Steps 1A to 4B
- 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 00-088), 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 144 diagnostic steps
Turn the key off, disconnect the sensor harness, and clean the connector pins with electronic contact cleaner Part Number 3824510. Inspect for bent, corroded, or pushed-back pins, then measure the coolant temperature sensor from pin A to pin B — a healthy sensor reads 175 ohms to 244k ohms. If the sensor is good, move to the ECM 28-pin connector, confirm pin-to-pin resistance above 100k ohms, and use jumper Part Number 3822917 between pin 12 and ground to verify ECM response before clearing the code.
Who needs this Cummins M11 144 manual
Fleet technicians, owner-operators, and mobile diagnostic specialists servicing early CELECT engines rely on this sheet to diagnose coolant temperature sensor faults without guesswork, turning a vague warning lamp into a repeatable test that protects the ECM.
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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