Eaton Fuller Advantage (2017) Fault Code: 96 PID: SPN: TBH FMI: 4 ECA Battery Voltage Gen2 ECA: Voltage Below Normal or Shorted Low

Description

Overview:
The Fuller Advantage transmission is equipped with an Electric Clutch Actuator (ECA) that controls the position of the clutch assembly. The ECA operates on a non-switched battery power supply.Fault Code 96 indicates battery power to the ECA is outside of the acceptable ECA operating range, but is specific to systems that use a Gen2 ECA. Troubleshooting for this procedure is specific to the Gen2 ECA and associated harnesses.

Note: The troubleshooting procedure for Fault Code 66 may direct users to use this troubleshooting procedure if the vehicle is equipped with a Gen2 ECA, even if Fault Code 96 was not set by the transmission. This is because some transmission software versions do not set Fault Code 96.

Detection:
ECA monitors the battery voltage supply it receives. If the supplied voltage falls below operating range or spikes significantly above operating range, the ECA will broadcast a fault condition to the TECU, which sets the fault code Active.

Conditions to Set Fault Code Active:
FMI 4 – Voltage Below Normal or Shorted Low: ECA battery voltage falls below 8.5 volts for 2 seconds or longer and the TECU has not detected low or weak battery voltage.

Fallback:
All FMIs
• “F” flashes in gear display.
• Service light flashes (if equipped).
• Engine does crank and/or start.
• Transmission does not engage a gear from neutral.
• When the transmission is in gear, it will not allow up shifts.
• ECA may maintain the current clutch position using the clutch holding device.
• ECA may move the clutch to the closed position (clutch engaged against engine flywheel).

Conditions to Set Fault Code Inactive:
FMI 4: ECA battery voltage rises above 9 volts on 12-volt chassis or above 18 volts on 24-volt chassis for 6 seconds.

Possible Causes:
FMI 4
1) ECA Power Harness
– Damaged wiring between the vehicle batteries and 2-Way ECA Connector
– Bent, spread, corroded or loose terminals
– Wiring shorted to ground, shorted to power or open
– Damaged in-line connectors between the vehicle batteries and 2-Way ECA Connector, if equipped
3) ECA 40-amp Fuse
– Bent, spread, corroded or loose fuse terminals
– Fuse not properly seated or connected
4) Vehicle Batteries
– Internal failure
5) Starting/Charging System
– Alternator/Generator failure
6) ECA
– Internal failure