Armrest Control Unit (ACU) Diagnostic Trouble Codes

Diagnostic Trouble Code

Display

Solution

ACU 158.4

Rear PTO system

Reduce electrical load or increase engine RPM to attempt vehicle system recovery.

ACU 581.7

Transmission System

Return to Park to attempt vehicle system recovery.

ACU 523955.31

Transmission Load High

Change IVT™/AutoPowr™ to Auto Mode. Increase engine speed, reduce ground speed, or reduce load.

ACU 523960.17

Operator Not In Seat

Return to seated position.

ACU 523960.31

Operator Not In Seat

Return to operator’s seat, depress brake or clutch, start vehicle. Engage transmission in forward gear/speed. Allow vehicle to move a few feet. Clear codes.

ACU 523961.2

Transmission system

Return to Park or restart engine to attempt vehicle system recovery.

ACU 524020.31

Lever not in park

Place transmission lever in Park.

ACU 524224.2

Operator Controls

Cycle PTO switch and restart engine to attempt vehicle system recovery.

OURX935,0000219-19-20110303