EPS System Description

EPS Control Unit Inputs and Outputs for Connector A (4P)

 

Terminal number Wire color Terminal sign
(Terminal name) 
Description Measurement 
Terminals Conditions
Ignition switch ON (II) 
Voltage 
RED M+
(Motor plus) 
Drives the actuator motor 1-GND ——— ——— 
WHT/ BLU +B
(Plus battery) 
Power source for the actuator motor 2-GND Every time Battery voltage 
GRN M-
(Motor minus) 
Drives the actuator motor 3-GND ——— ——— 
BLK PG
(Power ground) 
Ground for the actuator motor 4-GND ——— ——— 

EPS Control Unit Inputs and Outputs for Connector B (14P)

 

Terminal number Wire color Terminal sign
(Terminal name) 
Description Measurement 
Terminals Conditions
(Ignition switch ON (II)) 
Voltage 
BRN Vcc1 (12 V)
(Voltage common 1) 
Power source for torque sensor (12 V) 1-GND Start the engine Battery voltage 
Ignition switch OFF 0 V 
RED Vcc2 (5 V)
(Voltage common 2) 
Reference voltage for torque sensor (5 V) 2-GND Start the engine About 5 V 
Ignition switch OFF 0 V 
BRN SCS
(Service check signal) 
Detects service check connector signal ——— ——— ——— 
BLU/YEL VSP
(Vehicle speed pulse) 
Detects the vehicle speed signal for the speed sensor or the ECM/PCM (4 pulse/Rev) 4-GND Raise the vehicle off the ground and spin the front wheel Alternating voltage about 0 V-5 V-0 V-5 V 
GRY DIAG-H
(Diagnosis-H) 
Communicate with HDS ——— ——— ——— 
YEL IG1
(Ignition 1) 
Power source for activating the system 6-GND Ignition switch ON (II) Battery voltage 
Ignition switch OFF 0 V 
GRY/BLU T/SIG
(Torque sensor F/S signal) 
Detects torque sensor signal 7-GND Start the engine Momently 5 V 
YEL VT6
(Voltage torque 6) 
Detects torque sensor signal 8-GND Start the engine and turn the steering wheel About 0 V-5 V 
WHT T/SGND
(Torque sensor ground) 
Ground for the torque sensor 9-GND ——— ——— 
10 BLU VT3
(Voltage torque 3) 
Detects torque sensor signal 10-GND Start the engine and turn the steering wheel About 0 V-5 V 
11 PNK/BLU RY+
(Relay trigger plus) 
Drives the motor relay (motor relay is turned OFF when problem occurs) 11-GND Start the engine Battery voltage 
Ignition switch OFF 0 V 
13 YEL/RED WLP
(Warning lamp) 
Drives the EPS indicator light 13-GND EPS indicator ON Battery voltage 
OFF 0 V 
14 BLU NEP
(Engine pulse) 
Detect the engine pulse 14-GND Start the engine About 0 V-Battery
voltage