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CUSTOM AIR CONDITIONING
18-19
C.C.O.T. AIC SYSTEM DIAGNOSTIC PROCEDURE
"INSUFFICIENT COOLING"
BLOWER OPERATION
I
MOVE TEMP. LEVER RAPIDL'Y BACK AND FORTH FROM
MAX. HEAT TO MAX. COLD-LISTEN FOR DOOR HITTING A T EACH END.
I
SET SELECTOR LEVER "NORM" AIC.
SET BLOWER SWITCH ON "HIGH."
4.
OPEN DOORS AND HOOD.
5.
WARM ENGINE (CHOKE OPEN & OFF FAST IDLE SPEED CAM).
POORSEAL ATMODULETOCOVER OR
6.
RUN ENGINE A T IDLE.
MODULE TO COWL (B SERIES)
I
I
CHECK VISUALLY FOR COMPRESSOR CLUTCH OPERATION
- -
I
I
CHECK COMPRESSOR HOT LEAD WIRE
WITH TEST LIGHT OR PLACE
JUMPER WlRE FROM THE
COMPRESSOR TO POSITIVE
I+)
TERMINAL OF BATTERY
I
INSPECT FUSE
I
APPLY EXTERNAL GROUND
I
CHECK FOR BLOWN M A I N FUSE
I
FUSE BLOWN
1
[
FUSE O.K.
(
I
CHECK C.C.O.T. SYSTEM
WIRING DIAGRAM
-
-
-
- - . -
TO COMPRESSOR, I F CLUTCH
IS STILL NOT ENGAGED
REMOVE CLUTCH & REPAIR
I
CHECK FOR OPEN CIRCUIT
I
REPLACE FUSE
AS PER SERVICE MANUAL.
AT THE FOLLOWING
I
I
LOCATE CAUSE
& CORRECT
I
SYSTEM
(0.K.I
I
SYSTEM
(0.K.I
SEE
SERVICE MANUAL
FOR BLOWER MOTOR
I
SYSTEM
(0.K.I
I
CHECK FOR BROKEN WIRE
OR LOOSE CONNECTION
I N COMPRESSOR CIRCUIT
I
I
AFTER SETTING UP
MANIFOLD GAGE SET.
CHECK REFRIGERANT
PRESS. A T HIGH SIDE
FITTING A T PRESS.
SWITCH
I
DEFECTIVE
REPLACE
REPAIR
OR
REPLACE
I
SYSTEM
I
SYSTEM
(0.K.)
I
BELOW 22 PSlG 1152 kPa)
I
(
ABOVE 22 PSlG (152 kPs)
I
I
LOST CHARGE
I
JUMP PRESS. SWITCH
LEAK TEST AND
REPAIR. EVACUATE
AND RE-CHARGE
I
COMPRESSOR RUNS
I
I
I
DEFECTIVE SWITCH
I
LEAK CHECK SYSTEM
AND REPLACE SWITCH
EVACUATE & RE-CHARGE
I
SYSTEM
(0.K.)
Fig. 1 B-20A 1977 C.C.O.T. System Diagnostic Procedure
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