The Detroit 715 FMI 4 DTCs fault sheet is a single-page DTC reference that identifies a vehicle power shutdown condition on the DD Series (EPA 2007-Current) powertrain. It describes the short to ground on pin 10 of the CPC #4 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) — EPA07 and EPA10 emissions platforms |
| System / Group | DD Series (EPA 2007-Current) / DTCs — Vehicle Power Shutdown circuit |
| Fault code | SPN 715 / FMI 4 |
| 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 715 under failure mode 4
- Vehicle Power Shutdown description
- Affected circuit, pin and CPC #4 connector
- CPC versus MCM shared-SPN distinction note
- OEM wiring schematic reference
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 715 FMI 4 DTCs 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 715 FMI 4 DTCs fault
The document notes that CPC digital outputs share the same SPN as some MCM faults, so use the diesel diagnostic tool to confirm whether the code originates in the powertrain controller or the engine controller. Once confirmed, repair the short to ground on pin 10 of the CPC #4 connector and verify the CPC #4 connector terminals, referring to the OEM wiring schematic for pin routing and expected values.
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.
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