The Detroit SPN 723 FMI 14 fault sheet is a single-page DTC reference that identifies a swapped pins condition on the DD Series (EPA 2007-Current) powertrain. It describes the swapped camshaft position (CMP) sensor wiring at the MCM 120-pin connector, names the controller connector involved, and explains how the diesel diagnostic tool tells powertrain-controller outputs apart from engine-controller faults that carry the same code.
Official document details
| Brand | Detroit |
|---|---|
| Model coverage | DD Series (EPA 2007-Current) — all model years |
| System / Group | DD Series (EPA 2007-Current) / DTCs — Swapped Pins circuit |
| Fault code | SPN 723 / FMI 14 |
| Source | TruckFaultCodes.com fault-code reference (© 2017) |
| Year / Revision | Copyright 2017 |
| Pages | 1 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Fault code identification for SPN 723 under failure mode 14
- Swapped Pins description
- Affected circuit, pin and MCM 120-pin connector
- CPC versus MCM shared-SPN distinction note
- Step-by-step troubleshooting procedure
Applicable truck models and engines
This reference applies to Detroit DD Series (EPA 2007-Current) engine platforms fitted with the Common Powertrain Controller, and the code is catalogued for both current DD Series and Series 60 (DDEC VI, EPA 2007) installations. Because harness routing varies by chassis, always confirm pin assignments against the Original Equipment Manufacturer (OEM) schematic before testing. For engine and emissions-system references, see Detroit’s official powertrain resources.
Who needs this SPN 723 FMI 14 manual
This sheet is written for heavy-duty truck technicians and independent workshop owners who pull the code on a Detroit-powered unit and want a fast, accurate description of the failing circuit before they open the wiring harness or condemn a part.
Troubleshooting the SPN 723 FMI 14 fault
The document notes that CPC digital outputs share the same SPN as some MCM faults, so use the diesel diagnostic tool to confirm the code originates in the powertrain controller before following these steps:
- Verify the wire from camshaft position (CMP) sensor pin 1 runs to pin 44 of the MCM 120-pin connector.
- Verify the wire from camshaft position sensor pin 2 runs to pin 45 of the MCM 120-pin connector.
- Correct any swapped or crossed wiring found between the sensor and the connector.
The full 1-page PDF, with its wiring notes and repair guidance, is available in the DiagTechPro manuals library; a free account is required to download.
Related manuals library
Sản phẩm liên quan cho hãng này
Cùng brand theo taxonomy hiện có trong catalog WooCommerce.
Detroit Diesel Reports 6.3
Detroit Reprogramming Station (DDRS) 7.11
DDDL Backdoor Password: A Comprehensive Guide
