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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KNOWN INFO

TEST OPTIONS

Power to fan control switch OK.

Visual inspection.

Blower operates.

REASON FOR QUESTION

AC condenser core not blocked or damaged.

Are AC compressor belts

If AC compressor belts are

tight and free from damage?

POSSIBLE PROBLEMS

missing, loose, or

damaged, AC compressor

AC compressor belts loose or damaged.

will not operate properly.

AC heater/evaporator core blocked or

damaged.

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Temperature control switch temperature

probe damaged or installed incorrectly.

Heater cable faulty.

AC cable faulty.

Replace or tighten

Defrost cable faulty.

AC compressor belts

as required

AC harness wire 1435 faulty.

(WP 0020). Verify

AC compressor clutch faulty.

repair, go to Step 29

AC harness wire 1154 faulty.

of this fault.

YES

Low pressure switch faulty.

AC harness wire 1156 faulty.

High pressure switch faulty.

AC harness wire 1158 faulty.

AC harness wire 1155 faulty.

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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0012-4