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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22.

WARNING

KNOWN INFO

TEST OPTIONS

Read WARNING on

Power to fan control switch OK.

page 0012-45.

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

AC heater/evaporator core not blocked or

If continuity is not measured,

damaged.

assembly harness green

AC condenser assembly

harness green wire is

wire?

AC temperature control switch temperature

faulty.

probe OK.

Heater cable OK.

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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

assembly harness

High pressure switch OK.

green wire (see

AC condenser motor power wire OK.

Appendix A). Verify

AC condenser motor ground wire OK.

repair, go to Step 27 of

this fault.

AC condenser motor OK.

YES

AC condenser assembly harness black wire

OK.

AC harness wire 1155 OK.

Fan control switch OK.

Wire 1156 OK.

AC harness wire 1156 OK.

AC temperature control switch OK.

POSSIBLE PROBLEMS

AC condenser assembly harness green wire

faulty.

AC condenser motor solenoid faulty.

AC condenser motor solenoid ground wire

faulty.

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0012-44