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Page Title:
AC HEATER/EVAPORATOR BLOWER DOES NOT OPERATE IN ALL SPEEDS (LOW, MEDIUM, AND HIGH) (Cont) |
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 DRAFT
TB 9-2320-279-13-1
AC HEATER/EVAPORATOR BLOWER DOES NOT OPERATE IN ALL SPEEDS
(LOW, MEDIUM, AND HIGH) - Continued
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WARNING
10.
KNOWN INFO
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Read WARNING on
TEST OPTIONS
Fan control switch, fan control switch
harness, and AC heater/evaporator blower
Continuity test.
resistor harness connections OK.
Is continuity measured
AC heater/evaporator blower operates in at
across AC heater/evaporator
least one speed.
REASON FOR QUESTION
blower motor resistor
AC heater/evaporator blower resistor harness
If continuity is measured, AC
harness brown wire?
orange wire OK.
heater/evaporator blower
Fan control switch harness orange wire OK.
motor resistor is faulty. If
not, AC heater/evaporator
AC heater/evaporator blower resistor harness
blower motor resistor
red wire OK.
harness brown wire is
Repair AC heater/
Fan control switch harness red wire OK.
faulty.
evaporator blower
Fan control switch harness brown wire OK.
motor resistor harness
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Fan control switch OK.
brown wire (see
Appendix A) or replace
POSSIBLE PROBLEMS
AC heater/evaporator
NO
blower motor resistor
AC heater/evaporator blower resistor harness
harness (WP 0036).
brown wire faulty.
Verify repair, go to
YES
AC heater/evaporator blower resistor faulty.
Step 15 of this fault.
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Replace AC heater/
evaporator blower motor
resistor (WP 0035). Verify
repair, go to Step 15 of this
fault.
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WARNING
11.
KNOWN INFO
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Read WARNING on
TEST OPTIONS
Fan control switch, fan control switch
harness, and AC heater/evaporator blower
Continuity test.
resistor harness connections OK.
Is continuity measured
AC heater/evaporator blower operates in at
across fan control switch
least one speed.
REASON FOR QUESTION
harness brown wire?
AC heater/evaporator blower resistor harness
If continuity is measured, fan
orange wire OK.
control switch is faulty. If
Fan control switch harness orange wire OK.
not, fan control switch
harness brown wire is
Fan control switch harness red wire OK.
faulty.
AC heater/evaporator blower resistor harness
red wire OK.
Repair fan control
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switch harness brown
AC heater/evaporator blower resistor harness
wire (see Appendix A)
brown wire OK.
NO
or replace fan control
AC heater/evaporator blower resistor OK.
switch harness
(WP 0031). Verify
POSSIBLE PROBLEMS
repair, go to Step 15 of
YES
Fan control switch harness brown wire faulty.
this fault.
Fan control switch faulty.
Replace fan control switch
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(WP 0031). Verify repair, go to
Step 15 of this fault.
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0011-12
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