Cummins M11 code 414 is the Cummins troubleshooting document for the Datalink Circuit – Vehicle fault (PID S250, FMI 9, SRT 00-609). The vehicle data link lets the service tool communicate with the ECM and with onboard devices such as electronic dashboards and trip recorders using the SAE J1587 protocol. It sets a yellow warning lamp and lists the exact conditions, causes, and step-by-step checks a technician follows.
Official document details
| Brand | Cummins |
|---|---|
| Model coverage | Cummins M11 CELECT electronic engines built 1990 to 1994 |
| System / Group | M11 CELECT (1990-94) |
| Fault identifiers | PID S250, FMI 9, SRT 00-609 |
| Warning lamp | Yellow |
| Pages | 4 |
| Format | |
| Language | English |
Document table of contents
- Circuit description
- Component location
- Shop Talk
- Step-by-step troubleshooting steps
- Fault code clearing and verification
Trucks covered by Cummins M11 code 414
This procedure applies to Cummins M11 CELECT electronic engines built 1990 to 1994. The procedure carries the Cummins fault identifiers PID S250, FMI 9, SRT 00-609 for reference and repair-time tracking. It is set by electromagnetic induction, shorted or reversed data link wires, or improper voltage on the vehicle data link, and typical effects include unreliable or lost communication between the service tool and the ECM. For engine specifications and dealer support, see the official Cummins website.
Who needs this Cummins M11 code 414 manual
Heavy-truck technicians, fleet maintenance teams, and workshop owners diagnosing this fault use it to confirm the code before replacing parts. During diagnosis the vehicle data link connector may be a 2-pin Packard, 6-pin Deutsch, or 8-pin AMP type, so the OEM manual is consulted for its exact location. The step-by-step tree starts by reading active and inactive codes with the diagnostic tool, then inspects the harness and connector pins for bent, corroded, pushed-back, or expanded pins, flushing them with electronic contact cleaner Part Number 3824510 before any component is condemned. Test leads run around the bulkhead are used to isolate a faulty OEM harness, and the code is rechecked and cleared once the repair passes.
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Applies to these truck models
This is the manufacturer document shared across 2 model families. It applies to:
- Cummins DTCs
- Cummins M11 CELECT (1990-94)
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