Eaton Ultrashift Troubleshooting Guide

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Fault Isolation Procedures Component Code: 44 (SID 54, FMI 3, 4, 5) Inertia Brake Solenoid Coil Overview This fault code indicates an electrical failure of the solenoid that controls the Inertia Brake. When troubleshooting an inactive code See “Product Diagnostic Mode (PDM)” on page 10. Detection Starting at key-on and throughout operation, the Transmission ECU constantly measures this circuit. A failure mode of a short to battery, short to ground, or open circuit is detected. Fallback No Fallback Mode. However, if it is the Inertia Brake system that failed, it may be difficult to engage a gear from a stop if the Inertia Brake was providing assistance (due to a dragging clutch). Also, hill shifting performance may be reduced. Required Tools • Basic Hand Tools • Eaton Test Adapter Kit • Digital Volt/Ohm Meter • Troubleshooting Guide • ServiceRanger a PC-based Service Tool Possible Causes This fault code can be caused by any of the following: • Inertia Brake Solenoid • Transmission Harness • Transmission ECU Transmission controller Transmission harness Inertia brake solenoid coil 2-127
Fault Isolation Procedures Code 44 (SID 54, FMI 3, 4, 5), Inertia Brake Solenoid Coil Test Step A Procedure Condition Action 1. Key off. 2. Disconnect negative battery cable. 3. Disconnect the Transmission Harness 38-way connector. 4. Measure resistance between the Transmission Harness 38- way connector pins 33 and 5. If resistance is 2 to 6 ohms Go to Step B. If resistance is outside of range Go to Step C. Code 44 (SID 54, FMI 3, 4, 5) Front View 38-Way Connector OHMS V COM A 37 29 30 31 23 24 25 32 33 34 26 27 28 38 13 14 15 16 17 18 19 20 21 22 Transmission Harness 38-way Connector 35 7 8 9 10 11 12 1 2 3 4 5 6 36 2-128
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Fuller ® T M AutoShift / UltraShif
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Table of Contents Component Code: 5
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General Information Suggested Tools
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General Information Diagnostic Proc
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General Information Step D Procedur
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General Information Clearing Fault
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General Information Fault Codes PID
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General Information Product Diagnos
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Fault Isolation Procedures Power Up
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Fault Isolation Procedures Electric
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Fault Isolation Procedures Code 11
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Symptom Isolation Procedures J-1587
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Symptom Isolation Procedures Shift
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V COM A V COM A Symptom Isolation P
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Appendix Cobra Lever 8-way Connecto
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Appendix 25 31 15 16 17 23 35 10 11
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Appendix Push Button Shift Control
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Appendix OEM Shift Lever Wiring Dia
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Appendix OEM J-1939 Shift Input Dev
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Appendix Confirm Proper Clutch Adju
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Eaton Ultrashift Troubleshooting Guide

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