Switching Solenoid Valve Signal Check Test; Testing Relief Solenoid Valve Signal - Mazda 1983 RX7 Service Manual

7) Pull out choke knob and check that NO current flows to
relief solenoid valve. Push choke knob back in. Reconnect No. 1 and
No. 2 water temperature switch and disconnect jumper wire.
8) Remove passenger seat and fold back carpeting to expose
heat hazard sensor wiring. Disconnect heat hazard sensor connector
and connect a jumper wire to both terminals in the connector.
9) Voltmeter should read 0V at any engine speed. Reconnect
heat hazard sensor. If relief solenoid valve does not operate as
outlined, check heat hazard sensor and retest relief solenoid valve.
Fig. 4:

Testing Relief Solenoid Valve Signal

SWITCHING SOLENOID VALVE TEST
1) Disconnect vacuum sensing tubes from switching solenoid
valve and vacuum pipe. Blow through switching valve from vacuum
sensing tube "B" in Fig. 5. Air should pass through valve and escape
from front port.
2) Disconnect electrical connector from switching valve and
connect battery power to terminals on valve.
3) Blow through hose again; air should pass through valve
and escape through filter at rear of valve. If switching valve does
not respond as described, replace switching solenoid valve.

SWITCHING SOLENOID VALVE SIGNAL CHECK TEST

1) Warm engine to normal operating temperature. Connect
tachometer to engine. Connect voltmeter to negative terminal (Light
Gray) of switching solenoid valve connector.
2) Disconnect throttle sensor connector and connect a jumper
wire between terminals "A" and "C" of connector. Start engine and run
at 2000 RPM. Voltmeter should read near 0V. Slowly decrease engine
AIR INJECTION SYSTEM
Article Text (p. 5)
1983 Mazda RX7
For www.iluvmyrx7.com
Copyright © 1998 Mitchell Repair Information Company, LLC
Sunday, August 26, 2001 04:57PM