A/C Relay; Refrigerant Pressure Switch - Mazda MX-5 1990 Workshop Manual

AIR CONDITIONER
u
05UOUX-070
05UOUX-071
Ale
RELAY
Inspection
1 . Check continuity between terminals of the relay.
Terminals
a b
~
Continuity
0
0--0 :
Indicates continuity
C>-tt-O :
Indicates diode
I
c
I
1..011
;'"
I
0
I
0
2. If not as specified, replace the relay.
3. If correct, go to the next step.
d
-0
... ,..,
e
-0
4. Apply 12V to terminal d and ground terminal a.
5. Check continuity between terminals of the relay.
Terminals
c e
1::;;=1
Of---I---O
0--0 :
Indicates continuity
6. If not as specified, replace the relay.
REFRIGERANT PRESSURE SWITCH
Inspection
1. Turn the ignition switch OFF.
f
-0
2. Connect the manifold gauge set and measure the high-
pressure side refrigerant pressure.
High-pressure side:
Above 216 kPa (2.2 kg/cm
2
,
31.2 psi)
3. If not as specified, check the refrigerant system.
(Refer to page U-12.)
4. If correct, go to the next step.
5. Disconnect the refrigerant pressure switch connector.
6. Check for continuity of the switch.
Terminals Continuity
a-b Yes
7. If not as specified, replace the switch and the suction pipe.
U-39