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Home >> Mazda >> 1984 >> 626 LX, 4D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> EGR Function Testing >> Component Testing >> Vacuum Sensor

Vacuum Sensor

  1. Start engine and run at idle. Connect 1 voltmeter lead to Blue wire terminal of sensor connector and other lead to ground.
  2. Voltmeter should read approximately 1V. Disconnect vacuum hose from sensor. Reading should then change to 4V. See Fig 1 .
Fig 1: Testing Vacuum Sensor Engine should be idling at operating temperature.
G41331
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