ISC Servo
- Connect voltmeter between terminal No. 3 and injection mixer body. Do not disconnect ISC servo connector. Turn ignition switch from the "OFF" position to the "ON" position. While keeping ignition on for at least 15 seconds, check voltmeter reading.
- With ignition switch on, voltmeter should read 11-13 volts. After momentary indication of one volt, needle should stabilize at 6-13 volts. This indicates ISC servo and position switch are operating normally. Turn ignition switch to "OFF" to remove voltmeter.