AC DOES NOT COOL OR COOLS INADEQUATELY - continued

DRAFT

TB 9-2320-364-13&P-1

AC DOES NOT COOL OR COOLS INADEQUATELY - Continued

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

WARNING

17.

KNOWN INFO

Read WARNING on

Power to AC system OK.

page 0015-27.

AC heater/evaporator blower OK.

AC control circuit OK (except for temperature

Are AC hoses from AC

control and low pressure switches).

compressor output to AC

Low pressure switch OK.

expansion valve free from

No AC condenser dryer desiccant

contaminant in AC refrigerant system.

frost and cool spots?

TEST OPTIONS

No AC refrigerant oil contaminant in AC

Visual inspection.

refrigerant system.

AC system charge is not low.

REASON FOR QUESTION

No AC system leaks.

If frost or cool spots are

Temperature control switch OK.

forming on AC hoses, AC

Recover R-134a

No air or other contaminant in AC refrigerant

hoses are restricting

refrigerant

system.

R-134a refrigerant flow.

(WP 0053). Replace

AC compressor OK.

restricted AC hose

No moisture in AC refrigerant system.

(WP 0039). Replace

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

AC condenser core OK.

AC condenser dryer

AC system not overcharged.

(WP 0024).

YES

Evacuate and charge

AC evaporator core OK.

system (WP 0053).

POSSIBLE PROBLEMS

Verify repair, go to

Step 22 of this fault.

Restricted AC hose.

AC expansion valve faulty.

AC condenser dryer faulty.

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

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

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

0015-26