SPN 701 FMI 4 is the Detroit DD Series diagnostic fault code that identifies Digital Output 4 09 – short to ground on the pin 9 circuit of the CPC #4 connector. This DiagTechPro reference summarizes the official 1-page Detroit diagnostic sheet so a technician can confirm the condition before opening the truck, and it links to the full downloadable PDF.
Official document details
| Brand | Detroit |
| Model coverage | Detroit DD Series (EPA 2007-Current) diesel engines |
| System / Group | DD Series (EPA 2007-Current) / DTCs |
| Fault condition | Digital Output 4 09 – short to ground on the pin 9 circuit of the CPC #4 connector |
| Published source | TruckFaultCodes.com, Copyright © 2017 |
| Pages | 1 |
| File size | 0.2 MB |
| Format | |
| Language | English |
SPN 701 FMI 4 diagnostic overview
This Detroit sheet covers a short to ground on the pin 9 circuit of the Common Powertrain Controller (CPC) #4 connector, reported as digital output 4 09. The technician turns the ignition on, connects the diesel diagnostic tool, opens the parameters work window, and confirms that the PGR035 digital output parameters match the component being controlled. When the parameters are correct, the repair is to fix the short to ground on pin 9 of the CPC #4 connector using OEM wiring information.
Document table of contents
- Fault code identification
- Note: CPC outputs versus MCM faults
- Troubleshooting steps 1 to 6
- Parameter verification (PGR035 digital outputs)
- OEM wiring schematic reference
Applicable truck models covered
This procedure applies to Detroit DD Series (EPA 2007-Current) engines wired through the CPC controller across all model years, and is also cross-listed under the Series 60 (DDEC VI – EPA 2007) DTC group. It concerns a configurable digital output, so parameter verification is part of the diagnosis. For the OEM wiring schematics referenced in this procedure, see the official Detroit engine manufacturer site.
Who needs the SPN 701 FMI 4 manual
Workshop technicians and fleet owners using the diesel diagnostic tool to read Detroit fault codes and test the CPC #4 connector and Motor Control Module wiring will need this sheet. The full step-by-step PDF is available in the DiagTechPro manuals library, and a free account is required to download it.
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