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Home >> Mazda >> 1982 >> RX-7 S >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Idle Compensation System >> Testing >> Air Conditioner Solenoid Valve Signal Check
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Air Conditioner Solenoid Valve Signal Check

  1. Warm engine to normal operating temperature. Stop engine and connect tachometer. Disconnect electrical connector from air conditioner solenoid valve (White color dot) and connect voltmeter to solenoid terminals. Start engine and turn air conditioner on.
  2. On automatic transmission models, current should 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. Current should flow to solenoid valve 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.
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