Detroit fault code SPN 3187 FMI 9 is the TruckFaultCodes.com diagnostic sheet for the Shift Console Datalink (LIN) – Loss of TCM Communication condition on Detroit DD-series engines. This 1 page reference lists the fault identification, monitored conditions where shown, and the step-by-step troubleshooting the technician follows in the shop.
Official document details
| Brand | Detroit |
|---|---|
| Model coverage | Detroit DD Series (EPA 2007-Current) |
| System / Group | DD Series (EPA 2007-Current) / DTCs |
| Publication no. | Not printed; TruckFaultCodes.com reference |
| Year / Revision | 2017 |
| Pages | 1 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Fault code identification (SPN 3187 / FMI 9)
- Checking for related powertrain codes
- CPC4 configuration check
- Module communication status with ServiceLink
SPN 3187 FMI 9 troubleshooting steps
The routine first checks for related codes: Common Powertrain Controller (CPC4) battery-voltage faults on SPN 168 are troubleshot first, and a Motor Control Module (MCM2.1) SPN 625/FMI 9 points to a Controller Area Network (CAN) line repair. If the CPC4 was recently reprogrammed its configuration is verified; otherwise ServiceLink is connected to determine which modules are configured and their communication status before the affected module procedure is followed.
Applicable truck models
This sheet applies to Detroit DD-series diesel engines (the DD13, DD15 and DD16 family) built under the EPA 2007-Current emissions platform, in its GHG14 calibration. Engine and emissions specifications should always be confirmed against the vehicle build; full engine information is published on the Detroit Diesel official site.
Who needs this SPN 3187 FMI 9 manual
Technicians diagnosing a lost shift-console or transmission control module link on the LIN datalink use this sheet to separate a CAN wiring fault from a configuration problem. It is a quick bench reference rather than a full workshop manual, so the named removal steps still route back to Power Service Literature and, where escalation is needed, to the Detroit Customer Support Center.
The full PDF is available in the DiagTechPro manuals library; a free account is required to download it.
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