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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17.

WARNING

KNOWN INFO

TEST OPTIONS

Read WARNING on

Power to fan control switch OK.

page 0012-35.

Voltage test.

Blower operates.

Multimeter.

AC condenser core not blocked or damaged.

REASON FOR QUESTION

Are 22 to 28 vdc measured on

AC compressor belts OK.

AC harness wire 1155 at AC

AC heater/evaporator core not blocked or

If 22 to 28 vdc are not

damaged.

condenser assembly

measured, AC harness

wire 1155 is faulty.

connector, terminal A?

Temperature control switch temperature

probe OK.

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Heater cable OK.

AC cable OK.

Defrost cable OK.

AC compressor clutch OK.

Repair AC harness

wire 1155 (see

AC harness wire 1154 OK.

Appendix A) or

Low pressure switch OK.

replace AC wiring

High pressure switch OK.

harness (WP 0048).

Verify repair, go to

AC harness wire 1158 OK.

Step 29 of this fault.

AC harness wire 1435 OK.

YES

POSSIBLE PROBLEMS

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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AC harness wire 1156 faulty.

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0012-34