This page walks through the Eaton Fault Code 13 troubleshooting procedure from TRTS0980 for the Fuller Advantage Heavy Duty transmission. Fault Code 13 relates to the J1939 Shift Control Device and is diagnosed with the Product Diagnostic (PD) Mode plus voltage and resistance checks at the OEM J1939 Shift Control Connector.
Official document details
| Brand | Eaton |
| Model coverage | Fuller Advantage Heavy Duty automated transmission (DTCs) |
| System / Group | Fuller Advantage Heavy Duty / DTCs |
| Publication no. | TRTS0980 |
| Year / Revision | © 2016 Eaton |
| Pages | 9 |
| File size | 1.1 MB |
| Format | |
| Language | English |
Inside the Eaton Fault Code 13
- Record fault codes and verify which FMI set (11 or 8)
- Product Diagnostic (PD) Mode wiggle test
- Verify battery, ignition and ground at the Shift Control Device
- J1939 Negative and Positive continuity checks
- Resistance across the J1939 Data Link (50–70 ohms)
- Neutral request signal and return continuity
- Verify repair with ServiceRanger
The nine pages read as a lettered decision tree from Step A to Step V. After recording codes, Step B verifies which FMI has set, then Product Diagnostic (PD) Mode is used to catch intermittent faults by wiggling the J1939 data-link wiring and the shift-control power and ground. Later steps measure battery positive and switched ignition within 1.2 V of battery voltage, ground supply at 0.0 to 0.3 ohms, and continuity across the J1939 negative and positive at 0.0 to 0.6 ohms with an open circuit to ground. A critical check confirms 50 to 70 ohms across the data link, proving the terminating resistors, before neutral request signal and return pins are verified and the repair is confirmed by a road test.
Applicable truck models
The nine-page routine applies to Fuller Advantage transmissions using an OEM J1939 shift control device wired to the 38-way Vehicle Harness Connector at the TECU. Pin ranges include 0.0–0.6 ohms across the data link and open circuit to ground. Verify coverage against your VIN and build sheet on the Eaton Roadranger support.
Who needs the Eaton Fault Code 13
A technician with an active or inactive shift-control complaint uses this reference to follow steps A through V, measuring battery and ignition voltage within 1.2 V of battery and confirming data-link resistance before repairing wiring or replacing the shift control device.
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