Mazda RX-8 Manual page 1710

A/C unit free of gas leakage?
INSPECT EVAPORATOR PIPING
CONNECTIONS IN A/C UNIT FOR LOOSE
12
Are piping connections for evaporator in
•
A/C unit loose?
INSPECT PIPING CONNECTIONS FOR
LOOSENESS
13
Are piping connections loose?
•
CHECK TO SEE WHETHER
MALFUNCTION IS IN EXPANSION VALVE,
AIR MIX ACTUATOR AND COMPRESSOR
OIL OR ELSEWHERE
14
Does refrigerant high-pressure value
•
increase only a little?
CHECK TO SEE WHETHER
MALFUNCTION IS IN COMPRESSOR OIL
AMOUNT AND A/C COMPRESSOR OR
ELSEWHERE
15
When engine is racing, does high-pressure
•
value increase?
CHECK TO SEE WHETHER
MALFUNCTION IS IN COMPRESSOR OIL
AMOUNT OR A/C COMPRESSOR
16
After compressor oil is replenished each 10
•
ml {10 cc, 0.34 fl oz} , does high-pressure
value increase?
If piping is damaged or cracked, replace it.
No Then go to Step 20.
If there is no damage, go to next step.
Tighten connections with specified torque,
Yes adjust both compressor oil and refrigerant to
specified amount, then go to Step 20.
If the vane makes a noise, add 10 ml {10 cc,
0.34 fl oz} of compressor oil to the A/C
compressor. Verify that the noise is no longer
No heard.
Replace O-ring on piping, adjust refrigerant to
specified amount, then go to Step 20.
Tighten connections with specified torque,
Yes adjust both compressor oil and refrigerant to
specified amount, then go to Step 20.
If the vane makes a noise, add 10 ml {10 cc,
0.34 fl oz} of compressor oil to the A/C
compressor. Verify that the noise is no longer
No heard.
Replace O-ring on piping, adjust refrigerant to
specified amount, then go to Step 20.
Go to next step. (Pressure increases only a
Yes
little.)
No Go to Step 17.
Yes Return to Step 3.
No Go to next step.
Troubleshooting completed. (Explain to
Yes customer that cause was insufficient
compressor oil.)
Replace A/C compressor, then go to Step 20.
No
(Cause is defective A/C compressor.)
(w) RX-8 - HVAC
Page 81