SPN 3510 FMI 7 is documented in this Detroit DD Series fault code reference PDF, which covers the Accelerator Pedal Supply Voltage Circuit Failed High condition on Detroit engines. The 3-page document lists the fault description, the step-by-step troubleshooting sequence and the connector measurements a technician uses to confirm the repair.
Official document details
| Brand | Detroit |
|---|---|
| Model coverage | Detroit DD Series (EPA 2007-Current) GHG14 engines using the CPC4 |
| System / group | DD Series (EPA 2007-Current) / DTCs |
| Diagnostic code | FMI 7 / SPN 3510 |
| Year / revision | Source dated 2017 |
| Pages | 3 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- Fault code identification: SPN 3510, FMI 7
- Accelerator pedal supply voltage failed high
- Accelerator pedal disconnection
- Harness voltage measurements
- Short to power and open circuit isolation
- Harness repair by pin
Applicable truck models and engines
This fault code applies to Detroit DD Series (EPA 2007-Current) GHG14 engines using the CPC4, and the DiagTechPro library also files it under the Series 60 (DDEC VI, EPA 2007) DTC set. The diagnostic references the Common Powertrain Controller (CPC4) used on these Detroit powertrains. See the manufacturer’s Detroit official website for current engine specifications and dealer support.
SPN 3510 FMI 7 troubleshooting overview
After disconnecting the Accelerator Pedal (AP) and turning the ignition on, the technician measures voltage between pins C and B and between pins D and E of the AP harness connector, expecting 4.5 to 5.5 volts. Voltage from pins C and D to ground is then checked to find shorts to power on the pedal supply wiring or an open circuit back to pin 8 of the CPC4 number 1 connector. The branches guide the repair toward specific AP harness pins depending on the readings observed.
Who needs this SPN 3510 FMI 7 manual
Detroit-certified technicians, independent truck repair shops and fleet maintenance teams will use this reference to follow the factory diagnostic sequence with a diesel diagnostic tool before replacing any control module or sensor.
The full PDF is available in the DiagTechPro manuals library; a free account is required to download it, alongside the related Detroit Power Service Literature.
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