Idle Switch: B2200

1988 Mazda B2200 SE-5, 2D Pickup, AutomaticSECTION B2200
  1. Bring engine to normal operating temperature and run at idle. Connect a voltmeter to the Light Green/Black wire of the idle switch connector. See Fig 1 .
    Fig 1: Connector Terminal (B2200)
    G93858Courtesy of MAZDA MOTORS CORP.
  2. Increase engine speed to 2500 RPM. Observe voltmeter. Gradually decelerate engine. Voltage reading should be below 1.5 volts above 1200 RPM and 12 volts at idle. If readings are not within specifications, adjust the idle switch screw.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.