Mazda RX-8 Workshop Manual page 2493

11 INSPECT TO SEE WHETHER MALFUNCTION
IS IN REFRIGERANT PRESSURE SWITCH OR
REFRIGERANT AMOUNT
Inspect refrigerant pressure
switch.
Is it normal?
12 INSPECT TO SEE WHETHER MALFUNCTION
(LACK OF CONTINUITY) IS IN A/C CONTROL
SIGNAL CIRCUIT (BETWEEN A/C RELAY AND
PCM) OR ELSEWHERE
Does cool air blow out when
terminal A of A/C relay connector
(A/C control signal) is grounded by
a jumper wire?
13* INSPECT TO SEE WHETHER MALFUNCTION
(LACK OF CONTINUITY) IS IN PCM OR
WIRING HARNESS (BETWEEN A/C RELAY
AND PCM)
Test voltage at the A/C relay
control signal terminal of PCM.
Is voltage approx. 12 V?
14* INSPECT TO SEE WHETHER MALFUNCTION
IS IN MAGNETIC CLUTCH OR ELSEWHERE
Test voltage at the following
terminal of magnetic clutch
thermal protector:
Is voltage approx. 12 V?
15 INSPECT MAGNETIC CLUTCH CLEARANCE
Inspect the magnetic clutch
clearance.
(See
ADJUSTMENT [MANUAL AIR
CONDITIONER].)
Terminal B
(magnetic clutch
operation signal)
MAGNETIC CLUTCH
YesIf there is no refrigerant, replace condenser,
bleed the refrigerant line for 30 min or more
using a vacuum pump, and add refrigerant to
specified level, then go to Step 19.
No Replace refrigerant pressure switch, then go to
Step 19. (See REFRIGERANT PRESSURE
SWITCH REMOVAL/INSTALLATION [MANUAL
AIR CONDITIONER].)
YesRemove the jumper wire, then go to next step.
No Go to Step 14.
YesInspect PCM, then go to Step 19.
No Repair wiring harness between A/C relay and
PCM, then go to Step 19.
YesGo to the next step.
No Go to Step 17.
YesInspect and repair the magnetic clutch, then
go to Step 19.
(See MAGNETIC CLUTCH INSPECTION
[MANUAL AIR CONDITIONER].)
No Adjust the magnetic clutch clearance, then go