New Holland T8010 Manual page 1634

HTS Record/Play Switch Failure
Cause:
Both HTS RECORD and HTS PLAY circuits are detected to be closed at the same time.
Possible failure modes:
1. HTS Record/Play switch failed.
2. Bad connection at the armrest controller.
3. Armrest controller failure.
Solution:
The HTS Record/Play switch is mounted on the second panel and wired directly to the armrest controller.
NOTE: The HTS Record/Play switch information is broadcast over the Tractor Data Bus. The HTS Record/Play
switch can be monitored using the MONITOR window in the service tool and selecting Armrest HTS Record/Play
Switch.
The HTS Record/Play switch on the second panel is an integrated part with the second panel. If any control fails,
the second panel must be replaced.
All controls on the second panel share the power supply and ground. All control signals with the power supply and
ground are connected to the armrest controller through connector J2.
If the power supply or ground from the armrest controller are not correct, all the controls on the second panel will
show fault codes. It means all the following fault codes will be recorded at the same time.
ARM 89, ARM 99, ARM 109, ARM 119, ARM 139, ARM 149 and ARM 159.
Always check the connection between the second panel and the armrest controller first. Make sure there is no
damaged wires, loose connections, or bent pins.
To test the HTS Record/Play switch and the wiring circuit:
1. Open the armrest controller housing and disconnect connector J2 of the second panel from the armrest
controller.
2. Check the HTS Record/Play switch function:
a. When the switch is in HTS RECORD position, there should be continuity between pin 11 and pin 14 and no
continuity between pin 12 and pin 14.
b. When the switch is in HTS PLAY position, there should be continuity between pin 12 and pin 14 and no
continuity between pin 11 and pin 14.
c. When the switch is in OFF position, there should be no continuity between any two of pin 11, pin 12 and pin
14.
If the switch is not functioning as specified above, replace the second panel
3. Check controller function:
a. Turn key switch to the OFF, and then to the ON position.
b. Check the power supply from the armrest controller at pin 14 of J2. It should be approximately 12 volts.
c. Short wire pin 11 to pin 14 to simulate the HTS RECORD function. Short wire pin 12 to pin 14 to simulate the
HTS PLAY function.
Monitor the switch status on the monitor screen of the service tool.
If the controller does not function properly, replace the armrest controller.
4. If none of above, clean the connectors and reconnect the second panel to the armrest controller.
Clear the fault code. Cycle the key switch. Depress the HTS Record/Play switch in each direction several times.
If the fault code is recorded again, replace the armrest controller.
NOTE: See schematic sections 47 and 48 of the poster schematic.
Section 55 - Electrical System, Controller - Chapter 5
FAULT CODE ARM 1119
55-5-29