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Home >> Mazda >> 1988 >> 929 Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> EGI Control System >> Component Testing >> System Components >> Purge Solenoid No. 1
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Purge Solenoid No. 1

  1. For manual transmissions, disconnect neutral switch connector (M/T), jumper connector and start engine. For automatic transmissions, disconnect ECAT control unit after starting engine.
  2. Connect voltmeter between Brown/Red solenoid wire and ground. With engine temperature less than 131°F (55°C), voltage should be 12 volts. With engine temperature greater than 131°F (55°C) and engine RPM less than 900, voltage should be 12 volts. With engine warm and engine RPM greater than 900, voltage should be less than 2.5 volts. See Fig 1 .
    Fig 1: Checking Purge Solenoid No. 1
    G94845Courtesy of MAZDA MOTORS CORP.
  3. Disconnect vacuum hose from solenoid. Blow through port B. Ensure air exhaust through air filter.
  4. Disconnect 2 wire connector from solenoid. Connect 12 volts to one terminal and ground the other terminal of solenoid. Blow air through port B. Ensure air exhaust through port A.
Fig 2: Purge Solenoid No. 1 & 2
G94846Courtesy of MAZDA MOTORS CORP.
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