The Cummins M11 122 sheet documents the intake manifold pressure sensor circuit (PID P102, SPN 102, FMI 3) on Cummins CELECT engines built from 1990 to 1994. This 7-page reference drives a technician through the circuit description, intake manifold pressure sensor location, and the pin-by-pin checks needed to turn the yellow lamp off.
Cummins M11 122: Official document details
| Brand | Cummins |
| Model coverage | M11 and N14 CELECT (1990-94) |
| System / Group | Intake manifold pressure sensor circuit |
| Fault code identifier | Code 122 · PID P102 · SPN 102 · FMI 3 · SRT 00-093 |
| Warning lamp | Yellow |
| Pages | 7 |
| File size | 0.4 MB |
| Format | |
| Language | English |
Document table of contents
- Circuit description
- Component location
- Shop talk on overfueling and tampering
- Sensor and harness connector inspection
- Supply and signal voltage 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 intake manifold pressure sensor logic used on N14 CELECT engines of the same era. It is a fault-code troubleshooting sheet from the CELECT diagnostic set (SRT 00-093), 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 122 diagnostic steps
Clean and inspect the intake manifold pressure sensor connector with electronic contact cleaner Part Number 3824510, then install breakout cable Part Number 3824776 and check the supply voltage (4.75 to 5.25 VDC) from pin A to pin B and the signal voltage (0.42 to 0.58 VDC) from pin C to pin B. Test ECM pins 2, 4, and 26 for shorts above 100k ohms and continuity below 10 ohms, then use jumper Part Number 3822917 between pins 4 and 26 to verify the ECM. Also confirm the engine is not being overfueled and the correct turbocharger is fitted.
Who needs this Cummins M11 122 manual
Technicians facing a high-boost FMI 3 fault or a derate use this sheet to rule out overfueling and tampering, then isolate the sensor, harness, or ECM with exact voltage values.
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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