Case IH AFX8010 Repair Manual page 1731

Test Point
1 Turn the Key Switch S-02
ON with the engine OFF.
Check that Mirror Heat
Switch S-19 is open.
Check the voltage at Mirror
Heat Switch S-19
connector X127 (pin 2).
2 Close Mirror Heat Switch
S-19.
Check the voltage at the
Mirror Heat Switch S-19
connector X127 (pin 3).
Test Point
1 Turn the Key Switch S-02
ON with the engine OFF.
Close Mirror Heat Switch
S-19.
Check the voltage at LH
Mirror R-11 (pin 3).
2 Check the resistance
between LH Mirror R-11
(pin 6) and ground.
3 Check the voltage at RH
Mirror R-10 (pin 3).
BODY AND STRUCTURE - USER PLATFORM
F - MIRROR HEAT SWITCH TEST
Good Reading
12 volts
If good reading, go to next
test point.
12 volts
If good reading, system
OK.
G - HEATING MIRRORS TEST
Good Reading
12 volts
If good reading, go to next
test point.
Less than 1 ohm
If good reading, and LH
Mirror Heat R-11 doesn't
work replace the LH Mirror
assembly.
Go to next test point if LH
Mirror Heat R-11 was not
defective.
12 volts
If good reading, go to next
test point.
E.34 / 29
Possible Cause of Bad Reading
Open circuit 953 (OR) or 79 (OR)
between Fuse F09 and Mirror Heat
Switch S-19 (pin 2). Check the X002 (pin
H) in-line connectors for connection.
Short to ground in circuit 953 (OR) or 79
(OR). A short to ground will blow Fuse
F09.
Mirror Heat Switch S-19.
Short to ground which affects circuit 931
(OR). Check the X036 (pin 18) in-line
connectors for connection.
A short to ground will blow Fuse F09.
Possible Cause of Bad Reading
Open circuit 935 (OR) or 931 (OR)
between LH Mirror R-11 (pin 3) and
Mirror Heat Switch S-19 connector X127
(pin 3). Check the X036 (pin 18) and
X111 (pin 3) in-line connectors for
connection.
Short to ground which affects circuit 931
(OR) or 935 (OR). A short to ground will
blow Fuse F09.
Mirror Heat Switch S-19. Perform F -
Mirror Heat Switch Test.
Open in circuit 671 (BK) or 295 (BK)
between LH Mirror R-11 (pin 6) and
ground.
Check the X111 (pin 6) and X036 (pin
12) in-line connectors for connection.
Open in circuit 932 (OR) or 931 (OR)
between RH Mirror R-10 (pin 3) and
Mirror Heat Switch S-19 connector X127
(pin 3). Check the X036 (pin 18) and
X121 (pin 3) in-line connectors for
connection.