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Calif. B2000 Models

NOTE: Testing of Mazda 626 Man. Trans. models engine speed switch is explained in "MAZDA PISTON ENGINE AIR INJECTION" article in this section.
  1. Warm engine to normal operating temperature. Connect voltmeter to electrical connectors as shown in Fig 1.
  2. Increase engine speed to 1500 RPM, then slowly decrease engine speed. Record speed at which current flows to circuit.
  3. Slowly increase engine speed and record speed at which current stops flowing to circuit. The difference between recorded engine speeds should be 50-120 RPM. If not, replace engine speed switch.
    Fig 1: Engine Speed Switch Test Connections (Calif. B2000 Models)
    G09323241Courtesy of MAZDA MOTORS CORP.

    Attach voltmeter as shown. 

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