EPS System Description

EPS Control Unit Inputs and Outputs for Connector A (2P)

Terminal number Wire color Terminal sign
(Terminal name) Description Measurement
Terminals Conditions
(Ignition Switch ON (II)) Voltage
1 BLK PG
(Power ground) Ground for the actuator motor 1-GND ——— ———
2 WHT +B
(Plus battery) Power source for the actuator motor 2-GND At all times Battery voltage

Terminal number	Wire color	Terminal sign (Terminal name)	Description	Measurement
1	BLK	PG (Power ground)	Ground for the actuator motor	1-GND	———	———
2	WHT	+B (Plus battery)	Power source for the actuator motor	2-GND	At all times	Battery voltage

EPS Control Unit Inputs and Outputs for Connector B (2P)

Terminal number Wire color Terminal sign
(Terminal name) Description Measurement
Terminals Conditions
(Ignition Switch ON (II)) Voltage
1 GRN H-W Drives the actuator motor 1-GND ——— ———
——— ——— ——— ——— ——— ——— ———

Terminal number	Wire color	Terminal sign (Terminal name)	Description	Measurement
1	GRN	H-W	Drives the actuator motor	1-GND	———	———
———	———	———	———	———	———	———

EPS Control Unit Inputs and Outputs for Connector C (2P)

Terminal number Wire color Terminal sign
(Terminal name) Description Measurement
Terminals Conditions
(Ignition Switch ON (II)) Voltage
1 RED H-U Drives the actuator motor 1-GND ——— ———
2 BLU H-V Drives the actuator motor 2-GND ——— ———

Terminal number	Wire color	Terminal sign (Terminal name)	Description	Measurement
1	RED	H-U	Drives the actuator motor	1-GND	———	———
2	BLU	H-V	Drives the actuator motor	2-GND	———	———

EPS Control Unit Inputs and Outputs for Connector D (28P)

Terminal number Wire color Terminal sign
(Terminal name) Description Measurement
Terminals Conditions
(Ignition Switch ON (II)) Voltage
1 WHT CAN-H
(CAN-HI) CAN communication circuit ——— ——— ———
3 BLU NEP
(Engine pulse) Detects tachometer signal 3-GND Start the engine 3 V or less -6 V or more
7 BRN SCS
(Service check signal) Detects service check connector signal 7-GND SCS not grounded Battery voltage
8 LT GRN VS2
(Voltage sensor 2) Detects torque sensor signal ——— ——— ———
9 BRN PVF
(Voltage fade) Drives the torque sensor ——— ——— ———
10 GRN VS1
(Voltage sensor 1) Detects torque sensor signal ——— ——— ———
12 PNK S1
(Signal 1) Detects motor-angle sensor signal ——— ——— ———
13 BLU R1
(Motor-angle sensor 1) Detects motor-angle sensor signal ——— ——— ———
14 BRN S2
(Signal 2) Detects motor-angle sensor signal ——— ——— ———
15 RED CAN-L
(CAN-LO) CAN communication circuit ——— ——— ———
16 GRY IG1
(Ignition 1) Power source for activating the system 16-GND Ignition switch ON (II) Battery voltage
Ignition switch OFF 0 V
16_* YEL IG1
(Ignition 1) Power source for activating the system 16-GND Ignition switch ON (II) Battery voltage
Ignition switch OFF 0 V
17 LT BLU K-LINE
(Data link connector) Communicates with HDS 17-GND HDS not connected 5 V
26 BRN S3
(Signal 3) Detects motor-angle sensor signal ——— ——— ———
27 PNK R2
(Motor-angle sensor 2) Detects motor-angle sensor signal ——— ——— ———
28 BLU S4
(Signal 4) Detects motor-angle sensor signal ——— ——— ———

Terminal number	Wire color	Terminal sign (Terminal name)	Description	Measurement
1	WHT	CAN-H (CAN-HI)	CAN communication circuit	———	———	———
3	BLU	NEP (Engine pulse)	Detects tachometer signal	3-GND	Start the engine	3 V or less -6 V or more
7	BRN	SCS (Service check signal)	Detects service check connector signal	7-GND	SCS not grounded	Battery voltage
8	LT GRN	VS2 (Voltage sensor 2)	Detects torque sensor signal	———	———	———
9	BRN	PVF (Voltage fade)	Drives the torque sensor	———	———	———
10	GRN	VS1 (Voltage sensor 1)	Detects torque sensor signal	———	———	———
12	PNK	S1 (Signal 1)	Detects motor-angle sensor signal	———	———	———
13	BLU	R1 (Motor-angle sensor 1)	Detects motor-angle sensor signal	———	———	———
14	BRN	S2 (Signal 2)	Detects motor-angle sensor signal	———	———	———
15	RED	CAN-L (CAN-LO)	CAN communication circuit	———	———	———
16	GRY	IG1 (Ignition 1)	Power source for activating the system	16-GND	Ignition switch ON (II)	Battery voltage
Ignition switch OFF	0 V
16_*	YEL	IG1 (Ignition 1)	Power source for activating the system	16-GND	Ignition switch ON (II)	Battery voltage
Ignition switch OFF	0 V
17	LT BLU	K-LINE (Data link connector)	Communicates with HDS	17-GND	HDS not connected	5 V
26	BRN	S3 (Signal 3)	Detects motor-angle sensor signal	———	———	———
27	PNK	R2 (Motor-angle sensor 2)	Detects motor-angle sensor signal	———	———	———
28	BLU	S4 (Signal 4)	Detects motor-angle sensor signal	———	———	———

*1: K20Z2 engine model of LHD type