Check At Engine Control Module Terminal

Use special tool power plant ECU check harness (MB992110), check the engine control module terminal voltage.

Remove the engine control module (Refer to ENGINE CONTROL MODULE < 2.4L ENGINE >, ENGINE CONTROL MODULE < 3.0L ENGINE >).
Connect special tool MB992110 between the engine control module and the body-side harness connector.
Measure the terminal voltages between the check connector terminals of special tool MB992110 and ground terminals No.81 or 93.

Fig 1: Identifying ECM And Special Tool MB992110
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Special tool - Power plant ECU check harness (MB992110) connector

Fig 2: Identifying Power Plant ECU Check Harness Connector
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Terminal No.	Terminal code	Check item	Check condition		Normal condition
107	CNTS	Cruise control switches power supply	Ignition switch: "ON"	All switches: Released.	4.7 - 5.0 V
				Cruise control ON/OFF switch: Pressed.	0.9 - 1.7 V
				CANCEL switch: Pressed.	1.9 - 2.7 V
				SET - switch: Pressed.	2.9 - 3.6 V
				RES + switch: Pressed.	3.8 - 4.5 V
108	BRK	Stoplight switch (brake switch)	Ignition switch: "ON"	Depress the brake pedal.	Battery positive voltage
108	BRK	Stoplight switch (brake switch)	Ignition switch: "ON"	Release the brake pedal.	1V or less