New Holland T8010 Manual page 1635

Invalid Configuration Implement Depth Control Switch Failure
Cause:
The implement depth control switch has failed.
Possible failure modes:
1. Implement depth control switch failed.
2. Bad connection between the armrest controller and implement depth control switch.
3. Armrest controller failure.
Solution:
The implement depth control switch information is broadcast over the Tractor Data Bus. The implement depth
control switch can be monitored using the MONITOR window in the service tool and selecting Armrest implement
depth control Switch.
1. If the service tool MONITOR window shows the switch is not working. Open the armrest controller housing and
disconnect connector J14 and J15 of the armrest controller.
2. Check the wiring to the implement depth control switch. The momentary switch is normally open for both upper
limit set and lower limit set. When each side of the switch is depressed the contacts should close.
3. If the switch is bad, replace the secondary panel.
Battery Voltage Low
Cause:
Battery voltage low.
Possible failure modes:
1. Battery voltage lower than 9.8 volts.
2. The controller has a bad connection to power or is not grounded properly.
3. Alternator regulator malfunction.
Solution:
Check for battery voltage, alternator regulator output, and the controller connection to power and ground.
1. Check for fault codes Tractor Multi Function Controller TMF 65, 66, 98 and 99 and TRANS 8011. These are all
fault codes for battery voltage low. If they exist, it is more likely that the battery voltage low.
2. Test battery voltage. It should be around 12 - 14 volts.
3. If the battery voltage is within specifications, check system voltage at cavity 12 of connector C137. Check for
bad connection and improper ground at cavity 11 of the same connector.
4. Test alternator output if the battery voltage would not hold even when the tractor has been running.
5. If none of above, check the function of the armrest controller.
Section 55 - Electrical System, Controller - Chapter 5
FAULT CODE ARM 1129
FAULT CODE ARM 8011
55-5-30