Cummins M11 Multiple D is the DiagTechPro reference page for this Cummins sensor fault group document, a 1-page PDF sourced from TruckFaultCodes.com (Copyright 2017) that covers the pressure sensor common return fault group. This entry groups fault codes 122, 135, 221, and 422. The electronic control module (ECM) provides each pressure sensor in the sensor harness with a return line. If the return line to any sensor is damaged, the sensor will not work correctly. When the condition is detected the ECM logs the fault and turns on the yellow warning lamp to alert the driver and technician.
Cummins M11 Multiple D document details
| Brand | Cummins |
|---|---|
| Model coverage | M11 CELECT Plus (1995-98); N14 CELECT Plus (1995-98) / DTCs |
| System / Group | M11 CELECT Plus (1995-98) |
| Fault identifier | Multiple D |
| Warning lamp | Yellow |
| Source | TruckFaultCodes.com |
| Year / Revision | Copyright 2017 |
| Pages | 1 |
| File size | 0.1 MB |
| Format | |
| Language | English |
Document table of contents
- Circuit Description
- Component Location
- Shop Talk
- Troubleshooting Steps
- Repair verification and clearing fault codes
Applicable truck models
This document applies to Cummins M11 CELECT Plus (1995-98); N14 CELECT Plus (1995-98) / DTCs electronic engines used in on-highway and vocational trucks. The intake manifold pressure sensor is located on the intake air manifold. M11 – The ambient air pressure sensor is located on the cylinder block above the fuel supply pump. The troubleshooting section walks through connector and pin inspection, engine-harness resistance measurements and pin-to-pin continuity checks, and ends with a road test that confirms the code is inactive and all fault codes are cleared. Because the same procedure isolates the sensor, the harness and the ECM in turn, it prevents replacing parts that are still good. Verify engine calibration and coverage against the official Cummins engine support site before ordering parts.
Who needs this Cummins M11 Multiple D manual
Any mechanic or workshop owner diagnosing M11 Multiple D needs this PDF to follow the factory circuit and resistance checks in the correct order. High voltage on the pressure sensor signal lines will be caused by an open circuit in the pressure sensor common return line.
Applies to these truck models
This is the manufacturer document shared across 2 model families. It applies to:
- Cummins DTCs
- Cummins M11 CELECT Plus (1995-98)
Related manuals library
The full PDF is available in the DiagTechPro manuals library; a free account is required to download.
