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Page Title:
AC HEATER/EVAPORATOR BLOWER OPERATES BUT NO COLD AIR FROM DUCTS DURING AC OPERATIONS (Cont) |
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 DRAFT
TB 9-2320-279-13-1
AC HEATER/EVAPORATOR BLOWER OPERATES BUT NO COLD AIR FROM
DUCTS DURING AC OPERATIONS - Continued
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WARNING
3.
KNOWN INFO
Read WARNING on
Power to fan control switch OK.
Blower operates.
TEST OPTIONS
Is AC heater/evaporator core
AC condenser core not blocked or damaged.
free from damage and debris?
Visual inspection.
AC compressor belts OK.
REASON FOR QUESTION
POSSIBLE PROBLEMS
If AC heater/evaporator core
AC heater/evaporator core blocked or
is damaged or blocked,
damaged.
AC system will not operate
AC temperature control switch temperature
properly.
probe damaged or installed incorrectly.
Heater cable faulty.
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If AC heater/
AC cable faulty.
evaporator core is
Defrost cable faulty.
damaged, recover
AC compressor clutch faulty.
R-134a refrigerant
(WP 0050). Replace
AC harness wire 1154 faulty.
AC heater/evaporator
High pressure switch faulty.
core (WP 0030) and
AC harness wire 1156 faulty.
AC condenser dryer
(WP 0025). Evacuate
AC harness wire 1158 faulty.
and charge system
Low pressure switch faulty.
NO
(WP 0050). Verify
AC condenser motor solenoid faulty.
repair, go to Step 27
of this fault.
AC condenser motor power wire faulty.
YES
AC condenser motor ground wire faulty.
If AC heater/
AC condenser motor faulty.
evaporator core is
blocked with debris,
AC condenser assembly harness black wire
remove blockage.
faulty.
Verify repair, go to
AC harness wire 1155 faulty.
Step 27 of this fault.
AC condenser assembly harness green wire
faulty.
AC condenser motor solenoid ground wire
faulty.
Fan control switch faulty.
Wire 1156 faulty.
AC temperature control switch faulty.
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0012-6
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