New Holland T8010 Manual page 1053

Steps and Test Point
7. Measure voltage at in-line C139-D. Is 12V
present?
8. Measure voltage at blower speed switch pin 5. Is
12V present?
9. Turn blower control to MEDIUM? Does blower
motor operate at medium speed?
10. Measure voltage at blower motor resistor on
terminal M. Is 12V present?
11. Measure voltage at terminal 3 of blower motor
resistor in-line connector (CCU3,4). Is 12V
present?
12. Measure voltage at C139-E. Is 12V present?
13. Measure voltage at blower switch on pin 4. Is 12V
present?
14. Turn blower control to HIGH. Does blower motor
operate at high speed?
15. Measure voltage at blower motor resistor in-line
con necto r (CCU3,4 ) o n ter mi nal 4. Is 12V
present?
16. Measure voltage at C139-G. Is 12V present?
17. Measure voltage at blower speed switch on pin 3.
Is 12V present?
Section 50 - Climate Control - Chapter 1
YES - Repair open circuit between C139-D and in-line
connector on terminal 2.
NO - Go to next Step.
YES - Locate and repair open circuit between switch
pin 5 and C139-D.
NO - Test the Switch.
YES - Go to Step 13.
NO - Go to next Step.
YES - Replace blower motor.
NO - Go to next Step.
YES - Locate and repair open circuit between in-line
connector terminal 3 and blower motor resistor
terminal M.
NO - Go to next Step.
YES - Locate and repair open circuit between C139-E
and in-line connector terminal 3.
NO - Go to next Step.
YES - Locate and repair open circuit between C139-E
and the switch pin 4.
NO - Test switch.
YES - Wrong reading taken. Retest.
NO - Go to next Step.
YES - Locate and repair open circuit between in-line
connector and blower motor resistor on terminal H.
NO - Go to next Step.
YES - Locate and repair open circuit between C139-G
and blower motor resistor in-line connector terminal 4.
NO - Go to next Step.
YES - Locate and repair open circuit between switch
pin 3 and C139-G.
NO - Test switch.
50-1-82
Corrective Actions