Air Conditioner Solenoid Valve Signal Check Test; Air Conditioner Relay Test - Mazda 1983 RX7 Service Manual

Fig. 4: Testing Air Conditioner Solenoid Valve

AIR CONDITIONER SOLENOID VALVE SIGNAL CHECK TEST

1) Warm engine to normal operating temperature. Stop engine
and connect tachometer. Connect a voltmeter to the air conditioner
solenoid valve (White color dot) negative terminal. Start engine and
turn air conditioner on.
2) On automatic transmission models, current should NOT flow
to solenoid valve at any engine speed. On manual transmission models,
increase engine speed to 2000 RPM with throttle.
3) Slowly decrease engine speed and watch voltmeter.
Voltmeter should read near 0V when engine speed is 1000-1200 RPM. If
valve does not respond as outlined, replace air conditioner solenoid
valve.
NOTE: Before replacing air conditioner solenoid valve, check
auxiliary control unit as outlined in "Mazda RX7 Auxiliary
Control Device" article in this section.

AIR CONDITIONER RELAY TEST

Man. Trans. Only
1) Disconnect electrical connector from air conditioner
relay. Using an ohmmeter, check continuity between terminals.
2) With engine off and no power applied, there should be
IDLE COMPENSATION SYSTEM
Article Text (p. 4)
1983 Mazda RX7
For www.iluvmyrx7.com
Copyright © 1998 Mitchell Repair Information Company, LLC
Sunday, August 26, 2001 04:59PM