New Holland T8010 Manual page 1625

Remote Hydraulic Control Selection Switch 5 Failure
Cause:
This fault code is triggered when the extend and retract position are detected to be on at the same time.
Possible failure modes:
1. Switch failed.
2. External wiring failure (damaged wires, loose connectors, or bent pins).
3. Armrest controller internal failure (power supply or signal sensing failed).
Solution:
Monitor the switch status on the monitor screen of the service tool. Test the switch function, its wiring, and the
function of the armrest controller.
1. Open the armrest controller housing and disconnect connector SW205 for AUX 5.
2. Test the remote hydraulic control switch 5 (AUX 5) and its wiring. Pay attention for wiring damage, loose
connectors, or bent pins.
a. When the switch is in EXTEND position, there should be continuity between pin 1 and pin 2 and no
continuity between pin 1 and pin 3.
b. When the switch is in RETRACT position, there should be continuity between pin 2 and pin 3 and no
continuity between pin 1 and pin 3.
c. When the switch is in OFF position, there should be no continuity between any two of pin 1, pin 2, and pin 3.
If the switch is not functioning as specified above, replace the switch.
3. Check controller function:
a. Measure the voltage output from the controller at pin 2 of SW205. It should be at 12 VDC.
b. Short wire pin 1 to pin 2 to simulate the EXTEND function. Short wire pin 2 to pin 3 to simulate the
RETRACT function.
Monitor the switch status on the monitor screen of the service tool.
If the controller does not function properly, replace the armrest controller.
NOTE: See schematic section 44 on schematic poster.
Section 55 - Electrical System, Controller - Chapter 5
FAULT CODE ARM 1029
55-5-20