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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18.

WARNING

KNOWN INFO

TEST OPTIONS

Read WARNING on

Power to fan control switch OK.

page 0012-37.

Continuity test.

Blower operates.

Multimeter.

AC condenser core not blocked or damaged.

REASON FOR QUESTION

Is continuity measured

AC compressor belts OK.

across AC condenser motor

AC heater/evaporator core not blocked or

If continuity is not measured,

damaged.

power wire?

AC condenser motor

power wire is faulty.

AC temperature control switch temperature

probe OK.

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Heater cable OK.

AC cable OK.

Defrost cable OK.

AC compressor clutch OK.

AC harness wire 1154 OK.

Low pressure switch OK.

AC harness wire 1158 OK.

Repair AC condenser

High pressure switch OK.

motor power wire (see

Appendix A). Verify

AC harness wire 1156 OK.

repair, go to Step 27 of

AC condenser assembly harness green wire

this fault.

OK.

YES

AC condenser motor solenoid ground wire

OK.

Fan control switch OK.

Wire 1156 OK.

AC temperature control switch OK.

AC condenser assembly harness black wire

OK.

AC harness wire 1155 OK.

AC condenser motor solenoid OK.

POSSIBLE PROBLEMS

AC condenser motor power wire faulty.

AC condenser motor ground wire faulty.

AC condenser motor faulty.

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0012-36