New Holland T8010 Manual page 1505

EHR Top Link Switch Short
Cause:
The Data Bus signaled that the top link switches remain closed (ON). The top link switch is hard wired to the AUX/
Hitch/PTO controller.
Possible failure mode:
1. Operator depressed both retract and extend switch at same time.
2. Failed switch.
Solution:
1. If both retract and extend were depressed at same time, erase fault code and continue operation. If not
continue with step 2.
2. Disconnect the harness connectors C399 and C401 at top link switches on fenders. Check the switch function.
There should be no continuity between pins 1, 2 or 3. Depress switch to extend, there should be continuity
between pins 1 and 2 only. Depress switch to retract, there should be continuity between pins 2 and 3 only.
A. Switch contacts closed at all times, replace switch.
B. Switch tests out okay. Erase fault code and retry.
NOTE: Always inspect connector ends for damaged, bent or dislocated pins when troubleshooting.
NOTE: See schematic section 53 in schematic poster.
EHR Top Link Switch Conflict
Cause:
The Data Bus signaled that the top link switches conflict. The top link switch is hard wired to the AUX/Hitch/PTO
controller.
Possible failure mode:
1. Operator depressed top link switch in cab, second person depressed opposite fender switch.
2. Failed switch.
Solution:
1. Operate top link from either cab, or remote fender switch. Erase fault code and continue operation. If not
continue with step 2.
2. Disconnect the harness connectors C399 and C401 at top link switches on fenders. Check the switch function.
There should be no continuity between pins 1, 2 or 3. Depress switch to extend, there should be continuity
between pins 1 and 2 only. Depress switch to retract, there should be continuity between pins 2 and 3 only.
A. Switch contacts closed at all times, replace switch.
B. Switch tests out okay. Erase fault code and retry.
NOTE: Always inspect connector ends for damaged, bent or dislocated pins when troubleshooting.
NOTE: See schematic section 53 in schematic poster.
Section 55 - Electrical System, Controller - Chapter 3
AUX/HITCH/PTO FAULT CODE 152
AUX/HITCH/PTO FAULT CODE 153
55-3-86