AC DOES NOT COOL OR COOLS INADEQUATELY - Continued

DRAFT

TB 9-2320-279-13-1

AC DOES NOT COOL OR COOLS INADEQUATELY - Continued

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

WARNING

12.

KNOWN INFO

Read WARNING on

Power to AC system OK.

page 0015-19.

AC heater/evaporator blower OK.

AC control circuits OK (except for

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

temperature control and low pressure

Is AC condenser output hose

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

switches).

hot?

AC low pressure switch OK.

No AC condenser dryer desiccant

TEST OPTIONS

contaminant in AC refrigerant system.

Visual inspection.

No AC refrigerant oil contaminant in AC

refrigerant system.

REASON FOR QUESTION

No AC system leaks.

If AC condenser output hose

Temperature control switch OK.

is hot, AC condenser is

No air or other contaminant in AC refrigerant

faulty.

system.

Go to Step 13 of this

AC condenser dryer OK.

fault.

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

AC evaporator core OK.

No restricted AC hoses.

YES

AC compressor OK.

POSSIBLE PROBLEMS

Recover R-134a refrigerant

(WP 0050). Replace AC

AC condenser core faulty.

condenser core (WP 0024)

Moisture in AC refrigerant system.

and AC condenser dryer

AC expansion valve faulty.

(WP 0025). Evacuate and

charge system (WP 0050).

AC system overcharged.

Verify repair, go to Step 22 of

this fault.

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

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

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

0015-18