Mazda RX-8 Workshop Manual page 2517

Are there DTC displayed?
2 INSPECT REFRIGERANT PRESSURE TO
LOCATE MALFUNCTION
Perform refrigerant
pressure check.
(See REFRIGERANT
PRESSURE
Is the refrigerant pressure
normal?
3 INSPECT REFRIGERANT SYSTEM
PERFORMANCE
Perform refrigerant system
performance test.
(See REFRIGERANT
SYSTEM PERFORMANCE
TEST.)
Is the operation normal?
4 INSPECT DRIVE BELT
Inspect the drive belt.
(See DRIVE BELT
DEFLECTION/TENSION
INSPECTION
CHECK.)
[13B-MSP].)
YesGo to the next step.
No Record the inspection result.
If the refrigerant high-pressure and
low-pressure values are both high,
go to Step 6.
If the refrigerant high-pressure and
low-pressure values are
approximately the same, go to Step
9.
If the refrigerant high-pressure and
low-pressure values are both low, go
to Step 11.
If there is a vacuum on the low
pressure side and extremely low
pressure on the high pressure side,
go to Step 17.
If there is low pressure on the high
pressure side and high pressure on
the low pressure side, replace the
A/C compressor, then go to Step 21.
(See A/C COMPRESSOR
REMOVAL/INSTALLATION.)
If the refrigerant pressure is other
than above condition, go to Step 19.
YesOperation is normal. (Recheck malfunction
symptoms.)
No Go to the next step.
YesGo to the next step.
No Adjust or replace the drive belt, then the next step.
(See DRIVE BELT REPLACEMENT [13B-MSP].)