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

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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WARNING

27.

KNOWN INFO

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TEST OPTIONS

Read WARNING on

Power to fan control switch OK.

page 0012-55.

Continuity test.

Blower operates.

Multimeter.

AC condenser core not blocked or damaged.

Is continuity measured

AC compressor belts OK.

REASON FOR QUESTION

across wire 1156 from fan

AC heater/evaporator core not blocked or

If continuity is not measured,

damaged.

control switch to temperature

wire 1156 is faulty.

control switch?

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.

High pressure switch OK.

Repair wire 1156

(see Appendix A) or

AC harness wire 1158 OK.

replace wire 1156

NO

AC harness wire 1435 OK.

(WP 0046). Verify

AC harness wire 1155 OK.

repair, go to Step 29

of this fault.

AC condenser assembly harness black wire

YES

OK.

AC condenser motor solenoid OK.

AC condenser motor red wire OK.

AC condenser motor ground wire OK.

AC condenser motor OK.

AC condenser assembly harness green wire

OK.

AC condenser motor solenoid ground wire

OK.

Fan control switch OK.

POSSIBLE PROBLEMS

Wire 1156 faulty.

Temperature control switch faulty.

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AC harness wire 1156 faulty.

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0012-54