DRAFT
TB 9-2320-364-13&P-1
AC HEATER/EVAPORATOR BLOWER OPERATES BUT NO COLD AIR FROM
DUCTS DURING AC OPERATIONS - Continued
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WARNING
12.
KNOWN INFO
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TEST OPTIONS
Read WARNING on
Power to fan control switch OK.
Voltage test.
Blower operates.
AC condenser core not blocked or damaged.
Are 22 to 28 vdc measured on
AC compressor belts OK.
REASON FOR QUESTION
AC harness wire 1158 at low
AC heater/evaporator core not blocked or
pressure switch connector,
To isolate system fault.
damaged.
when fan control switch is set
Temperature control switch temperature
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to an on position and
probe OK.
temperature control switch is
AC harness wire 1155 OK.
set to the coldest temperature
AC condenser assembly harness black wire
position?
OK.
AC condenser motor solenoid OK.
AC condenser motor red wire OK.
AC condenser motor ground wire OK.
AC condenser motor OK.
Connect AC harness
pressure switch
AC condenser assembly harness green wire
NO
connector, and go to
OK.
Step 14 of this fault.
AC condenser motor solenoid ground wire
OK.
YES
Fan control switch OK.
Wire 1156 OK.
Temperature control switch OK.
Heater cable OK.
AC cable OK.
Defrost cable OK.
AC harness wire 1435 OK.
AC compressor clutch OK.
POSSIBLE PROBLEMS
AC harness wire 1154 faulty.
Low pressure switch faulty.
AC harness wire 1156 faulty.
AC harness wire 1158 faulty.
High pressure switch faulty.
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0012-24