New Holland T8010 Manual page 1354

Power Mirror System Symptom Chart
NOTE: The batteries must be fully charged and all connections clean and tight. Use a multimeter (DVOM) for these
tests. For battery testing and service, see the battery section in the service manual.
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.
Symptom
Mirrors totally inoperable
Left mirror inoperable
Right mirror inoperable
Right mirror, up/down
inoperable
Section 55 - Electrical System - Chapter 1
Possible Cause
No power or ground to switch
Mirror Switch
Circuit to mirrors
Mirror Switch
Mirror Assembly
Circuit between switch and
mirror
Mirror Switch
Mirror Assembly
Circuit between switch and
mirror
Mirror Switch
Right Mirror assembly
Circuit between switch and
mirror
55-1-173
Reference/Test
A - Power Mirror Switch Power
and Ground Supply Test
B - Power Mirror Switch Test
C - First Circuit Test and
D - Second Circuit Test
B - Power Mirror Switch Test, test
points 1, 2, 7, 8, 9, 10, 15, 16,
17, and 18.
F - Left Mirror Assembly Test
C - First Circuit Test,
test points 1 thru 3, and
D - Second Circuit Test test
points 1 thru 3.
B - Power Mirror Switch Test,
test points 1 thru 6, and 11 thru
14.
E - Right Mirror Assembly Test
C - First Circuit Test,
test points 4 thru 6, and
D - Second Circuit Test,
test points 4 thru 6.
B - Power Mirror Switch Test,
test points 1, 2, 5, 6, 13 and 14.
E - Right Mirror Assembly Test,
test points 3, 4, 7, and 8.
C - First Circuit Test,
test points 5 and 6, and
D - Second Circuit Test,
test points 4 and 5.