AC HEATER/EVAPORATOR BLOWER OPERATES BUT NO COLD AIR FROM DUCTS DURING AC OPERATIONS - continued

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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18.

WARNING

KNOWN INFO

Read WARNING on

TEST OPTIONS

Power to fan control switch OK.

page 0012-37.

Blower operates.

Voltage test.

AC condenser core not blocked or damaged.

Multimeter.

Are 22 to 28 vdc measured on

AC compressor belts OK.

REASON FOR QUESTION

AC harness wire 1156 at AC

AC heater/evaporator core not blocked or

To isolate system fault.

damaged.

condenser assembly

connector, terminal B when

Temperature control switch temperature

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probe OK.

fan control switch is set to an

Heater cable OK.

on position and temperature

control switch is set to the

AC cable OK.

coldest temperature position?

Defrost cable OK.

AC compressor clutch OK.

AC harness wire 1154 OK.

Low pressure switch OK.

High pressure switch OK.

AC harness wire 1158 OK.

Go to Step 26 of this

AC harness wire 1435 OK.

fault.

AC harness wire 1155 OK.

POSSIBLE PROBLEMS

YES

AC condenser assembly harness black wire

faulty.

AC condenser motor solenoid faulty.

AC condenser motor red wire faulty.

AC condenser motor ground wire faulty.

AC condenser motor faulty.

AC condenser assembly harness green wire

faulty.

AC condenser motor solenoid ground wire

faulty.

Fan control switch faulty.

Wire 1156 faulty.

Temperature control switch faulty.

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AC harness wire 1156 faulty.

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0012-36