LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 1985 >> 626 Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> EGR Function Testing >> Component Testing >> Vacuum Sensor
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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 1 volt. Disconnect vacuum hose from sensor. Reading should change to 4 volts. See Fig 1 .
Fig 1: Testing Vacuum Sensor Engine should be idling at operating temperature.
G40254
scientia non olet · About LEMON Manuals