Motor Position Sensor

Disconnect MPS connector. See Fig 1 -Fig 2 . Connect ohmmeter lead to ground.

Fig 1: Identifying Motor Position Sensor Connector Terminals (All Models Except Colt Vista 2.0L)
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA

Fig 2: Identifying Motor Position Sensor Connector Terminals (Colt Vista 2.0L)
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
On Colt Vista 2.0L, connect other ohmmeter lead to terminals No. 1 and 3. On all other models, connect other ohmmeter lead to terminals No. 2 and 3.
Resistance for all models should be 4000-6000 ohms, replace MPS.
CAUTION: DO NOT apply more than 6 volts to ISC motor.
Operate ISC motor by connecting a 6-volt source directly to appropriate terminals of ISC motor connector. For ISC motor operation test procedures, see ISC MOTOR OPERATION TEST under IDLE CONTROL SYSTEM in this article.
While operating ISC motor, measure resistance between MPS connector terminals No. 1 and 2 (Colt Vista 2.0L). On all other models, measure resistance between MPS connector terminals No. 3 and 5.
Observe ohmmeter during ISC motor operation. If MPS resistance does not vary within a 4000-6000 ohm range or if resistance does not change smoothly, replace MPS (vehicles equipped with separate MPS) or ISC motor assembly (vehicles equipped with MPS incorporated in ISC).