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ISC Solenoid

  1. Ensure ignition is off. Disconnect ISC solenoid harness connector. Set DVOM to 200-ohm scale. Measure resistance between ISC solenoid terminals. Due to diode in solenoid, resistance should be higher in one direction than other. If resistance is 7-13 ohms in one direction and higher in other direction, solenoid is okay.
  2. Set DVOM to 20 k/ohm scale. Measure resistance from either ISC solenoid terminal to ISC solenoid housing. If resistance is greater than 10 k/ohms, ISC solenoid is okay.
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