Check At Electric Power Steering-Ecu

Fig 1: Identifying Electric Power Steering-ECU Connectors

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

CONNECTOR TERMINAL REFERENCE (C-140)

Terminal No.	Check item	Checking requirement	Normal condition
11	Battery power supply	Always	Approximately system voltage
12	Ground	Always	1 V or less

CONNECTOR TERMINAL REFERENCE (C-141)

Terminal No.	Check item	Checking requirement	Normal condition
1	Ignition key signal	Ignition switch: ON	Approximately system voltage
1	Ignition key signal	Ignition switch: OFF	1 V or less
2	-	-	-
3	CAN_L	-	-
4	CAN_H	-	-

CONNECTOR TERMINAL REFERENCE (C-141-1)

Terminal No.	Check item	Checking requirement	Normal condition
21	S1+ (Cosine+)	Start the engine.	2 V or less
22	S3- (Cosine-)	Start the engine.	2 V or less
23	S2+ (Sine+)	Start the engine.	2 V or less
24	Torque sensor sub signal	Start the engine.	4.7 V or less
25	S4- (Sine-)	Start the engine.	2 V or less
26	Torque sensor main signal	Start the engine.	4.7 V or less
27	R1+ (Exciler+)	Start the engine.	2 V or less
28	R2- (Exciler-)	Start the engine.	2 V or less
30	Torque sensor power supply	Start the engine.	5.3 V or less
31	Torque sensor earth	Always	1 V or less
32	Torque sensor and resolver GND	Always	1 V or less

CONNECTOR TERMINAL REFERENCE (C-141-2)

Terminal No.	Check item	Checking requirement	Normal condition
41	Motor V	Start the engine.	Battery voltage or less
42	Motor W	Start the engine.	Battery voltage or less

CONNECTOR TERMINAL REFERENCE (C-141-3)

Terminal No.	Check item	Checking requirement	Normal condition
51	Motor U	Start the engine.	Battery voltage or less