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

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

14.

WARNING

KNOWN INFO

TEST OPTIONS

Read WARNING on

Power to fan control switch OK.

Continuity test.

page 0012-29.

Blower operates.

Multimeter.

AC condenser core not blocked or damaged.

REASON FOR QUESTION

AC compressor belts OK.

Is continuity measured

If continuity is measured, AC

AC condenser motor solenoid OK.

harness wire 1158 is

across high pressure switch?

AC condenser motor power wire OK.

faulty. If not, high

pressure switch is faulty.

AC condenser motor ground wire OK.

AC condenser motor OK.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

AC condenser assembly harness black wire

OK.

AC harness wire 1155 OK.

AC condenser assembly harness green wire

Replace high

OK.

pressure switch

(WP 0039). Verify

AC condenser motor solenoid ground wire

repair, go to Step 27

OK.

of this fault.

Fan control switch OK.

Wire 1156 OK.

AC temperature control switch OK.

YES

AC heater/evaporator core not blocked or

damaged.

Repair AC harness wire 1158

AC temperature control switch temperature

(see Appendix A) or replace

probe OK.

AC wiring harness

Heater cable OK.

(WP 0046). Verify repair, go

to Step 27 of this fault.

AC cable OK.

Defrost cable OK.

AC compressor clutch OK.

AC harness wire 1154 OK.

Low pressure switch OK.

AC harness wire 1156 OK.

POSSIBLE PROBLEMS

AC harness wire 1158 faulty.

High pressure switch faulty.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

0012-28