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Page Title:
AC HEATER/EVAPORATOR BLOWER DOES NOT OPERATE - Continued |
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 DRAFT
TB 9-2320-279-13-1
AC HEATER/EVAPORATOR BLOWER DOES NOT OPERATE - Continued
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WARNING
8.
KNOWN INFO
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Read WARNING on
TEST OPTIONS
Wire 1082 OK.
Voltage test.
Fan control switch OK.
Are 22 to 28 vdc measured at
Fan control switch harness connector OK.
engine start switch, terminal
AC heater/evaporator blower motor resistor
REASON FOR QUESTION
harness connector OK.
wire 1640, when engine start
If voltage is measured, wire
switch is in the ON position?
AC heater/evaporator blower motor power
1640 is faulty. If not,
wire OK.
engine start switch is
AC heater/evaporator blower motor OK.
faulty.
AC heater/evaporator blower motor ground
wire OK.
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Circuit breaker No. 11 OK.
POSSIBLE PROBLEMS
Replace engine start
switch
Engine start switch faulty.
NO
(TM 9-2320-279-20).
Wire 1640 faulty.
Verify repair, go to
Step 9 of this fault.
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YES
Repair wire 1640 (see
Appendix A) or notify
Supervisor. Verify repair, go
to Step 9 of this fault.
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WARNING
9.
KNOWN INFO
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Read WARNING on
TEST OPTIONS
Circuit breaker No. 11 OK.
Verify repair.
Engine start switch OK.
Does AC heater/evaporator
Wire 1640 OK.
REASON FOR QUESTION
blower operate?
Wire 1082 OK.
If AC heater/evaporator
Fan control switch OK.
blower operates, fault has
Fan control switch harness connector OK.
been corrected.
AC heater/evaporator blower motor resistor
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harness connector OK.
AC heater/evaporator blower motor power
wire OK.
AC heater/evaporator blower motor OK.
AC heater/evaporator blower motor ground
Fault not corrected.
NO
wire OK.
Notify Supervisor.
POSSIBLE PROBLEMS
YES
None
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Fault corrected.
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0010-10
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