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

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

26.

WARNING

KNOWN INFO

TEST OPTIONS

Read WARNING on

Power to fan control switch OK.

page 0012-53.

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.

fan control switch, terminal C

AC heater/evaporator core not blocked or

If 22 to 28 vdc are not

damaged.

(wire 1156), when fan control

measured, fan control

switch is faulty.

switch is set to an on

Temperature control switch temperature

probe OK.

position?

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

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.

Replace fan control

AC harness wire 1158 OK.

switch (WP 0031).

AC harness wire 1435 OK.

Verify repair, go to

AC harness wire 1155 OK.

Step 27 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.

POSSIBLE PROBLEMS

Fan control switch faulty.

Wire 1156 faulty.

Temperature control switch faulty.

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

AC harness wire 1156 faulty.

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

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

0012-52