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ISC Servo

  1. Connect voltmeter between terminals No. 1 and 4. Disconnect ISC servo connector. Turn ignition switch to "OFF" position then to "ON" position. While keeping ignition on for at least 15 seconds, check voltmeter reading.
  2. Voltmeter should read 1.5 volts with ignition switch on. If after 15 seconds, needle indicates .9 volts, ISC servo and position switch are operating normally. Turn ignition switch to "OFF" position to remove voltmeter.
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