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Home >> Mazda >> 1991 >> B2200 Base, 2D Pickup, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests - CARBURETED >> Deceleration Control Emission Systems & Sub-Systems >> Coasting Richer System
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Coasting Richer System

  1. Run engine at idle speed. Using a voltmeter with negative lead to ground, backprobe terminal "H" (Brown/Black wire) of solenoid valve connector. See Fig 1 .
  2. Increase engine speed to 3000 RPM and lift idle switch arm. See Fig 2 . Verify voltmeter indicates appropriate voltage according to RPM. See COASTING RICHER SYSTEM RPM/VOLTAGE TABLE  .
Fig 1: Checking Coasting Richer Solenoid Valve
G117736Courtesy of MAZDA MOTORS CORP.
Fig 2: Locating Idle Switch Arm
G117737Courtesy of MAZDA MOTORS CORP.
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