Eaton Fuller Advantage (2017) Fault Code: 85 PID: SPN: 751 FMI: 12 Shift Control Device Incompatible: Bad Intelligent Device

Overview:
The Fuller Advantage transmission may be equipped with an Eaton Push Button Shift Control Device (PBSC) or J1939 Shift Control Device. At key on, the Transmission Electronic Control Unit (TECU) establishes communication with the Shift Control Device in preparation for vehicle operation. Fault Code 85 sets when the TECU receives a message from an incompatible Shift Control Device.

Detection:
The TECU determines the type of Shift Control Device the vehicle is equipped with during the initial power up. If the TECU determines the Shift Control Device is incorrect and there are no low battery system faults, this fault code sets Active.

Conditions to Set Fault Code Active:
FMI 12 – Bad Intelligent Device: TECU detects an incompatible Shift Control Device for 10 seconds.

Fallback:
FMI 12
• “F” flashes in gear display.
• Service light flashes (if equipped).
• Transmission will not engage a gear from neutral.
• Transmission will not attempt to shift out of current gear.

Conditions to Set Fault Code Inactive:
FMI 12: TECU recognizes a valid Shift Control Device.

Possible Causes:
FMI 12
• Shift Control Device
– Improper Shift Control Device installed on vehicle