Description
Fuller AutoShift & UltraShift Troubleshooting GuideĀ
The Fuller AutoShift / UltraShift Troubleshooting Guide TRTS-0930 is a comprehensive diagnostic manual designed to assist technicians in identifying and troubleshooting electrical, electronic, transmission control, clutch, shifting, and communication-related problems. The sample manual is identified as Troubleshooting Guide TRTS0930, August 2006 and covers a wide range of Fuller automated transmission configurations.
This troubleshooting guide is especially useful when diagnosing transmission fault codes or symptoms that require systematic testing. It explains diagnostic procedures beginning with the transmission power-up sequence and provides detailed guidance for retrieving and clearing fault codes, isolating individual component faults, and following symptom-driven diagnostic procedures.
Manual Specifications
| Manual Type | Troubleshooting Guide |
| Manual Number | TRTS-0930 / TRTS0930 |
| Product | Fuller AutoShift / UltraShift Transmissions |
| Publication Date | August 2006 |
| Number of Pages | 352 Pages |
| Digital File Size | 24 MB |
| Format | |
| Sections | General Information, Fault Isolation Procedures, Symptom Isolation Procedures, Appendix |
| Diagnostics Covered | Fault Codes, Electrical Diagnostics, Shift Systems, Clutch, Sensors, Solenoids, Communication Systems |
| Wiring Information | Transmission, Shift Lever, Push Button and J-1939 Wiring Diagrams |
| Recommended For | Technicians, Mechanics, Repair Shops and Fleet Maintenance |
Comprehensive Fault Code Diagnostics
The manual includes a dedicated Fault Code Isolation Procedure Index covering numerous component and system codes. Examples include ECU operation and configuration faults, J-1939 communication problems, shift lever voltage faults, clutch-related faults, battery voltage problems, range and splitter engagement faults, solenoid valve faults, rail and gear position sensors, input/main/output shaft speed sensors, select motors, and shift-control-device faults.
The diagnostic index associates fault codes with PID/SID/FMI information, fault descriptions, code type, and the corresponding troubleshooting procedure. This makes the guide useful as a quick reference when a transmission fault code is displayed.
Step-by-Step Diagnostic Procedures
The guide provides structured diagnostic procedures that begin with checking the gear display and transmission operating condition. Depending on the displayed condition, technicians are directed toward power-up testing, start-enable relay testing, front-box control testing, fault isolation procedures, or transmission engagement tests.
The sample pages also demonstrate battery and electrical checks, including voltage testing on 12-volt and 24-volt systems and testing the transmission diagnostic connector. The procedures are organized around specific conditions and actions, making the troubleshooting process easier to follow in the workshop.
Fault Code Retrieval and Clearing
TRTS-0930 explains how to retrieve both active and inactive fault codes using the transmission’s self-diagnostic mode. It also describes the ignition-key sequences used to retrieve codes and the procedure for clearing inactive codes from the ECU memory.
The guide also references the use of a PC-based service tool such as ServiceRanger for retrieving and clearing diagnostic fault codes.
Product Diagnostic Mode (PDM)
A dedicated section explains Product Diagnostic Mode (PDM), which is used to help diagnose inactive faults and intermittent electrical or wiring problems. The procedure is intended to increase fault-sensing sensitivity and can be used to help locate loose, degraded, or intermittent connections.
Symptom-Driven Troubleshooting
The manual includes symptom-based diagnostic procedures for conditions such as an inability to shift using the Up/Down button, engine starting system complaints, J-1587 communication problems, gear-display faults, failure to engage a gear from neutral, clutch engagement problems, and AutoShift or UltraShift shift complaints.
Wiring Diagrams and Technical References
The appendix contains connector pin descriptions and multiple transmission wiring diagrams. The sample table of contents identifies wiring diagrams for UltraShift DM3, UltraShift AW3, AutoShift 10-speed, UltraShift 10-speed, UltraShift 13-speed, and AutoShift 18-speed configurations, including analog and push-button shift controls.
The appendix also includes Eaton and OEM shift-lever wiring diagrams, an OEM J-1939 shift-input-device wiring diagram, proper clutch operation information, and information related to the Eaton Adapter Test Kit J-43318.
Transmission Models Covered
The sample identifies the following transmission model families:
- RTO-1X910-AS3
- RTLO-1X918-AS3
- RTO(M)-1X910-DM3
- RTLO(M)-1X913-DM3
- F(O)-X406X-AW3
- F(O)-X405X-DM3
- F(O)-X406X-DM3
The manual also lists recommended diagnostic equipment including air gauges, a Volt/Ohm Meter, PC-based ServiceRanger, shift lever tester, data link tester, Eaton test adapter kit, and 6-pin and 9-pin Deutsch diagnostic adapters.
Whether you are diagnosing a fault code, investigating a shifting complaint, checking transmission electrical circuits, or tracing a communication problem, this TRTS-0930 troubleshooting guide provides a structured reference for professional Fuller AutoShift and UltraShift transmission diagnostics.
What’s Included
- General transmission diagnostic information
- Warnings and cautions
- Recommended diagnostic tools
- Supported transmission model information
- Step-by-step diagnostic procedures
- Fault code retrieval and clearing procedures
- Fault Code Isolation Procedure Index
- Symptom-Driven Diagnostics Index
- Product Diagnostic Mode (PDM)
- Power-Up Sequence testing
- Electrical pretest procedures
- Clutch system diagnostics
- Shift lever and shift control diagnostics
- J-1939 and J-1587 communication diagnostics
- Range and splitter troubleshooting
- Sensor and solenoid testing
- Shift motor diagnostics
- Connector pin descriptions
- Transmission wiring diagrams
- Shift lever and push-button wiring diagrams
- Proper clutch operation information
- Eaton Adapter Test Kit information
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