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Southern Nevada desert | My PTO cut-n-paste
Is the pto light flashing?
If it is a code will be set.
To check for codes move a fuse to the "diag" position, work the turn signal to get "CCU" in the display, pull the turn signal towards you (flash to pass position) to enter the CCU, use the turn signal to find address 1 and read the codes.
The FWD, diff lock, and PTO all use the same coil. These can get hot and fail, test by switching with another coil.
A bad pto speed sensor will cause the computer to dissengage the pto.
The PTO solenoid is on top of the PTO housing above the PTO shaft.
Put a spare fuse in the "Diag" location (2nd horizontal fuse, top row), use turn signal left/right to select CCU on tach, pull turn signal toward you (flash to pass) to enter ccu, select address #1 codes will be displayed.
072 rear pto circuit failed
073 rear solenoid/circuit failed
075 rear pto speed too low with pto on
To test the sensor/sensor circuit:
Select address 4
first digit 0, not used
second digit engine speed sensor
third digit pto speed sensor, should consistently change 0-1-0-1-0-1 as pto is turned by hand, no change or eratic signals indicates a sensor or wiring problem.
To test the switch/switch circuit:
Select address 9
first digit 0, not used
second digit rear pto "on" switch, should consistently change from 0 to 1 when the pto switch is turned on
third digit rear pto "off" switch, should consistently change from 1 to 0 when the pto switch is turned on. second and third digits must never be the same, they must be 010 or 001, if both switches are on or off at the same time for more than 2 seconds pto will be stopped.
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I need to get ccu codes from JD 7710
