Check At The Engine Control Module Terminal

Connect a needle-nosed wire probe to a voltmeter probe.
Insert the needle-nosed wire probe into each of the engine control module connector terminals from the wire side, and measure the voltage while referring to the check chart.
NOTE:
1. Make the voltage measurement with the engine control module connector connected.
2. You may find it convenient to pull out the engine control module to make it easier to reach the connector terminals.
3. The checks can be carried out off the order given in the chart.
Fig 1: Checking Engine Control Module Terminal
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

CAUTION: Short-circuiting the positive (+) probe between a connector terminal and ground could damage the vehicle wiring, the sensor, engine control module or all of them. Be careful to prevent this!
If voltmeter shows any division from standard value, check the corresponding sensor, actuator and related electrical wiring, then repair or replace.
After repair or replacement, recheck with the voltmeter to confirm that the repair has corrected the problem.

Fig 2: Identifying Engine Control Module Connector
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Terminal No.	Check item	Check condition		Normal condition
94	Cruise control switches power supply	Ignition switch: "ON"	All switches: Released.	4.7 - 5.0 V
			Speed limiter ON/OFF switch: Pressed.	0 - 0.5 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
121	Stop lamp switch (brake switch)	Ignition switch: "ON"	Depress the brake pedal.	System voltage
121	Stop lamp switch (brake switch)	Ignition switch: "ON"	Release the brake pedal.	1V or less
128	Clutch switch < M/T >	Ignition switch: "ON"	Release the clutch pedal.	10 V or more
128	Clutch switch < M/T >	Ignition switch: "ON"	Depress the clutch pedal.	1 V or less