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
14.
KNOWN INFO
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
REASON FOR QUESTION
AC compressor belts OK.
AC harness wire 1156 at high
If 22 to 28 vdc are not
AC heater/evaporator core not blocked or
pressure switch connector,
measured, AC harness
damaged.
when fan control switch is set
wire 1156 is faulty.
Temperature control switch temperature
to an on position and
probe OK.
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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.
Repair AC harness
wire 1156 (see
AC condenser assembly harness green wire
Appendix A) or
OK.
NO
replace AC wiring
harness (WP 0048).
OK.
Verify repair, go to
Fan control switch OK.
Step 29 of this fault.
YES
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.
AC harness wire 1154 OK.
Low pressure switch OK.
POSSIBLE PROBLEMS
AC harness wire 1156 faulty.
AC harness wire 1158 faulty.
High pressure switch faulty.
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0012-28
