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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
4.
KNOWN INFO
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Read WARNING on
TEST OPTIONS
Circuit breaker No. 11 OK.
Visual inspection.
Engine start switch OK.
Are fan control switch and AC
Wire 1640 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 9 of
this fault.
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WARNING
5.
KNOWN INFO
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Read WARNING on
TEST OPTIONS
Circuit breaker No. 11 OK.
Continuity test.
Engine start switch OK.
Is continuity measured
Wire 1640 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 9 of this fault.
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0010-6
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