DRAFT
TB 9-2320-364-13&P-1
AC HEATER/EVAPORATOR BLOWER DOES NOT OPERATE IN ALL SPEEDS
(LOW, MEDIUM, AND HIGH) - Continued
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WARNING
14.
KNOWN INFO
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Read WARNING on
TEST OPTIONS
Fan control switch, fan control switch
harness, and AC heater/evaporator blower
(0011-18 blank).
resistor harness connections OK.
AC heater/evaporator blower operates in at
least one speed.
REASON FOR QUESTION
Is continuity measured
AC heater/evaporator blower resistor harness
across fan control switch
If continuity is measured, fan
brown wire OK.
control switch is faulty. If
harness orange wire?
Fan control switch harness brown wire OK.
not, fan control switch
harness orange wire is
AC heater/evaporator blower resistor harness
faulty.
red wire OK.
Fan control switch harness red wire OK.
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AC heater/evaporator blower resistor harness
Repair fan control
orange wire OK.
switch harness orange
wire (see Appendix A)
AC heater/evaporator blower resistor OK.
or replace fan control
NO
POSSIBLE PROBLEMS
switch harness
(WP 0031). Verify
Fan control switch harness orange wire faulty.
repair, go to Step 15 of
YES
Fan control switch faulty.
this fault.
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Replace fan control switch
(WP 0031). Verify repair, go
to Step 15 of this fault.
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WARNING
15.
KNOWN INFO
TEST OPTIONS
Read WARNING on
Fan control switch, fan control switch
Verify repair.
harness, and AC heater/evaporator blower
(0011-18 blank).
REASON FOR QUESTION
resistor harness connections OK.
AC heater/evaporator blower operates in at
If AC heater/evaporator
least one speed.
blower operates at low,
Does AC heater/evaporator
medium, and high speeds,
AC heater/evaporator blower resistor harness
blower operate at low,
fault has been corrected.
orange wire OK.
medium, and high speeds?
Fan control switch harness orange wire OK.
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AC heater/evaporator blower resistor harness
brown wire OK.
Fan control switch harness brown wire OK.
AC heater/evaporator blower resistor harness
red wire OK.
Fault not corrected,
NO
Fan control switch harness red wire OK.
notify Supervisor.
AC heater/evaporator blower resistor OK.
Fan control switch OK.
YES
POSSIBLE PROBLEMS
None
Fault corrected.
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0011-16
