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Home >> Mazda >> 1994 >> B2300 SE, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Idle Control System >> ISC System >> Idle Speed Control (ISC) Solenoid

Idle Speed Control (ISC) Solenoid

  1. Solenoid is a by-pass air-type solenoid. Disconnect coolant hoses. Make sure coolant flows through ISC and air valve is open at room temperature.
  2. Ensure ignition is off. Disconnect ISC solenoid electrical connector. Set DVOM to 200-ohm scale. Measure resistance between ISC solenoid terminals. A diode is located in solenoid; connect DVOM positive test lead to VPWR terminal (Red wire) and negative lead to ISC terminal (White/Light Blue wire). Resistance should be 6-13 ohms. Replace solenoid as necessary.
Fig 1: Checking ISC Solenoid Valve (Typical)
G93J80589Courtesy of MAZDA MOTORS CORP.
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