Idle Switch

Turn ignition off and disconnect ISC servo connector. Using an ohmmeter, check for continuity between terminal No. 1 and ground on Galant. Check between terminal No. 2 and ground on all other models. See Fig 1 . No continuity should be present with throttle depressed. With throttle released, continuity should be present.

Fig 1: Idle Switch Terminal Identification

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.