Mazda 323 1988 Workshop Manual page 329

PRESSURE REGULATOR CONTOROL (PRC) SYSTEM
46
Operating
time
After starting for: 180 set
AitW 180 see
Voltage
below 2.5 V
aoorox 12V
4. Check the voltage when starting the engine.
5. If not correct, check the engine control unit termi-
nal voltage (Refer to page 4B-77)
PRC Solenoid Valve
Inspection
1, Disconnect the vacuum hose from the solenoid
valve and vacuum pipe.
2. Blow through the solenoid valve from vacuum hose
0.
3. Check that air passes through the solenoid valve
and flows from port @.
Apply battery power
4. Disconnect the solenoid valve connector.
5. Connect 12V and a ground to the terminals of the
solenoid valve.
6. Blow through the solenoid valve from the vacuum
hose @.
7. Check that air passes through the solenoid valve
and flows from the air filter.
8. If not correct, replace the solenoid valve.
9. Connect the vacuum hoses, and connector.
323 Revised 10187 48-57