DRAFT
TB 9-2320-364-13&P-1
AC HEATER/EVAPORATOR BLOWER DOES NOT OPERATE
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INITIAL SETUP:
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Maintenance Level
Materials/Parts
Field Level Maintenance
None
Equipment Condition
Personnel Required
Shut off engine (TM 9-2320-364-10).
One
Parking brake applied (TM 9-2320-364-10).
References
Wheels chocked (TM 9-2320-364-10).
TM 9-2320-364-10
Tools and Special Tools
TM 9-2320-364-20
Tool Kit, General Mechanic's (Item 9, Appendix F)
Multimeter (Item 2, Appendix F)
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START
WARNING
1.
KNOWN INFO
TEST OPTIONS
Read WARNING on
CTIS operates indicating 24 vdc power OK.
Voltage test.
POSSIBLE PROBLEMS
REASON FOR QUESTION
AC circuit breaker faulty.
Are 22 to 28 vdc measured on
Wire 1280A faulty.
If 22 to 28 vdc are not
AC circuit breaker, terminal
measured, AC heater/
wire 1082, when engine start
Wire 1082 faulty.
evaporator blower will not
switch is in the ON position?
Fan control switch faulty.
operate.
Fan control switch harness connector loose
or faulty.
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AC heater/evaporator blower motor resistor
harness connector loose or faulty.
AC heater/evaporator blower motor power
Go to Step 7 of this
wire faulty.
NO
fault.
AC heater/evaporator blower motor faulty.
AC heater/evaporator blower motor ground
wire faulty.
YES
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