AC HEATER/EVAPORATOR BLOWER OPERATES BUT NO COLD AIR FROM DUCTS DURING AC OPERATIONS (Cont)

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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16.

WARNING

KNOWN INFO

TEST OPTIONS

Read WARNING on

Power to fan control switch OK.

page 0012-33.

Voltage test.

Blower operates.

Multimeter.

AC condenser core not blocked or damaged.

REASON FOR QUESTION

AC compressor belts OK.

Are 22 to 28 vdc measured on

AC heater/evaporator core not blocked or

AC condenser assembly

To isolate system fault.

damaged.

harness black wire at AC

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AC temperature control switch temperature

condenser motor solenoid?

probe OK.

Heater cable OK.

AC cable OK.

Defrost cable OK.

AC compressor clutch OK.

AC harness wire 1154 OK.

Low pressure switch OK.

Go to Step 20 of this

AC harness wire 1158 OK.

fault.

High pressure switch OK.

AC harness wire 1156 OK.

YES

AC condenser assembly harness green wire

OK.

AC condenser motor solenoid ground wire

OK.

Fan control switch OK.

Wire 1156 OK.

AC temperature control switch OK.

POSSIBLE PROBLEMS

AC condenser motor solenoid faulty.

AC condenser motor power wire faulty.

AC condenser motor ground wire faulty.

AC condenser motor faulty.

AC condenser assembly harness black wire

faulty.

AC harness wire 1155 faulty.

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0012-32