Eaton Fuller Advantage (2017) Fault Code: 14 PID: SID 19 SPN: FMI: 5 Invalid Shift Lever Voltage: Current Below Normal or open Circuit
Overview:
The Fuller Advantage transmission may be equipped with an analog Shift Control Device. The Transmission Electronic Control Unit (TECU) supplies the analog Shift Control Device with a 5-volt reference through OEM wiring. This voltage is reduced by resistive ladder circuitry in the shift device, based on the position the driver selects. The return voltage to the TECU indicates the position of the Shift Lever.
Fault Code 14 indicates the TECU has detected an electrical fault in either the OEM-supplied wiring or Shift Control Device.
Detection:
TECU monitors the voltage from the analog Shift Control Device. Fault Code 14 sets when the reported voltage for a selected mode does not match the actual value for that lever position.
Conditions to Set Fault Code Active:
FMI 5 – Current Below Normal or Open Circuit: An open circuit is present on the circuit, or the circuit is shorted high.
Fallback:
All FMIs
• “F” flashes in gear display.
• Service light flashes (if equipped).
• Engine may not crank.
• Transmission is limited to down shifts only.
• Transmission may not engage a gear from neutral.
• If a fault occurs with the manual mode up or down buttons, manual mode can not be used. The transmission will shift as normal in auto mode
Conditions to Set Fault Code Inactive:
All FMIs: Signal voltage enters a valid range for 0.2 seconds.
Possible Causes:
1) Vehicle Harness
– Wires between analog Shift Lever and TECU may be open or shorted to power
2) Analog Shift Lever
– Internal failure
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