New Holland T8010 Manual page 1380

Wiper/Washer System Diagnostic Tests
NOTE:
• The batteries must be fully charged and all connections clean and tight.
• Use a multimeter (DVOM) for these tests.
• Check fuse 52 and circuit breaker 51.
• Check Power Distribution section if fuse and circuit breaker are good.
• For battery testing and service, see the battery section in the service manual.
• Check all listed connectors for loose, damaged corroded or pushed out terminals.
IMPORTANT: DO NOT use a self-powered test light for any of these tests. Use of a self-powered test light can
cause damage to components in this system.
WARNING: Before performing any of the electrical tests, be sure all operating controls are in neutral or
!
park lock position. This will eliminate accidental movement of the machine or start-up of power driven
equipment.
A - Front Wiper System Power and Ground Supply Test
Test Point
1 Access connector 127 on
front wiper switch.
Ignition ON.
Check for 12 volts at cavity
6.
2 Check for 12 volts at inline
connector 13, cavity P.
3 Check for 12 volts at front
wiper motor connector
115, cavity C.
4 Check for chassis ground
at front wiper motor
connector 116, cavity A.
Section 55 - Electrical System - Chapter 1
Good Reading
Wiper switch power supply
good, go to test point 4.
Go to next test point.
Check inline splice if sent
here by test point 1, bad
reading.
Front wiper motor power
supply good. Go to next
test point.
Ground circuit OK.
55-1-199
Possible Cause of Bad Reading
Go to next test point.
Open circuit 831C (R). Check inline
splice C31 and circuit 831A (O).
Open circuit 831B (O)
Go to next test point.