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Page Title:
AC HEATER/EVAPORATOR BLOWER DOES NOT OPERATE - continued |
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 DRAFT
TB 9-2320-364-13&P-1
AC HEATER/EVAPORATOR BLOWER DOES NOT OPERATE - Continued
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WARNING
4.
KNOWN INFO
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Read WARNING on
TEST OPTIONS
CTIS operates indicating 24 vdc power OK.
Visual inspection.
AC circuit breaker OK.
Are fan control switch and AC
Wire 1280A OK.
REASON FOR QUESTION
heater/evaporator blower
Wire 1082 OK.
If connectors are loose or
motor resistor harness wires
Fan control switch OK.
wires are damaged, AC
free from damage and loose
heater/evaporator blower
POSSIBLE PROBLEMS
connectors?
will not operate.
Fan control switch harness connector loose
or faulty.
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AC heater/evaporator blower motor resistor
harness connector loose or faulty.
Repair wires (see
AC heater/evaporator blower motor power
Appendix A) or
wire faulty.
replace fan control
AC heater/evaporator blower motor faulty.
switch harness
NO
(WP 0031) or AC
AC heater/evaporator blower motor ground
heater/evaporator
wire faulty.
blower motor resistor
YES
harness (WP 0036)
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as required. Verify
repair, go to Step 8 of
this fault.
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WARNING
5.
KNOWN INFO
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Read WARNING on
TEST OPTIONS
CTIS operates indicating 24 vdc power OK.
Continuity test.
AC circuit breaker OK.
Is continuity measured
Wire 1280A OK.
across AC heater/evaporator
Wire 1082 OK.
REASON FOR QUESTION
blower power wire from AC
Fan control switch OK.
If continuity is not measured,
heater/evaporator blower
Fan control switch harness connector OK.
AC heater/evaporator
motor resistor to blower
AC heater/evaporator blower motor resistor
blower power wire is
motor power wire splice?
harness connector OK.
faulty.
POSSIBLE PROBLEMS
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AC heater/evaporator blower motor power
wire faulty.
Repair AC heater/
evaporator blower
AC heater/evaporator blower motor faulty.
NO
motor power wire (see
AC heater/evaporator blower motor ground
Appendix A) or replace
wire faulty.
AC heater/evaporator
blower motor resistor
YES
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harness (WP 0036).
Verify repair, go to
Step 8 of this fault.
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0010-6
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