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Home › Mazda › 1990 › RX-7 Base, Automatic › Repair and Diagnosis (Single Page) › Heating, Ventilation & A/C (HVAC) › HVAC Control Systems › Heater System › LOGICON Switch Assembly Testing › LOGICON Mode Control Circuit

LOGICON Mode Control Circuit

  1. Connect jumper wire between terminal "h" of 13-pin male connector and terminal "O" of 17-pin female connector. Measure voltage between terminals "P" and "Q" of 17-pin female connector. See Figure . Reading should be 12 volts. If voltage is correct go to step 2). If voltage is not correct, replace logicon switch.
  2. Disconnect jumper wire. Connect jumper wire between terminal "h" of 13-pin male connector and terminal "H" of 17-pin female connector. Measure voltage between terminals "Q" and "P" of 17-pin female connector. Voltage should be 12 volts. If voltage is not as specified, replace logicon switch.
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