ISC Servo Motor

Check resistance between terminals No. 1 and 4 of ISC servo motor. See Fig 1 . Standard resistance at 68°F (20°C) is approximately 5-11 ohms for all other models. Ensure no continuity is present between terminals No. 1 and 4, and servo motor body.
Use 4 flashlight batteries (6 volts) and apply negative and positive voltage between terminals No. 1 and 4. See Fig 2 . Ensure ISC servo extends and retracts as necessary.

Fig 1: Idle Switch/ISC Servo Motor Connector Identification

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 2: ISC Servo Operational Check

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 3: Throttle Position Sensor (TPS) Connector Identification

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.