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Honda Fit/Jazz - EPS System Description (Except HATC Model)
Online Honda Fit/Jazz 2002-2005 Workshop repair manual used by professionals.
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Snip from the Manual
EPS System Description
EPS Control Unit Inputs and Outputs for Connector A (2P)
IMAGE REPLACED HERE
Terminal number Wire color Terminal sign
(Terminal name)Description Measurement Terminals Conditions
Ignition switch ON (II)Voltage
(Motor plus)Drives the actuator motor1-Ground——————2WHT/ BLU + B
(Plus battery)Power source for the actuator motor2-GroundEvery timeBattery voltage3GRNM -
(Motor minus)Drives the actuator motor3-Ground——————4BLKGND
(power ground)Ground for the actuator motor4-Ground——————
EPS Control Unit Inputs and Outputs for Connector B (14P)
IMAGE REPLACED HERE
Terminal number Wire color Terminal sign
(Terminal name)Description Measurement Terminals Conditions
(Ignition switch ON (II))Voltage
(Voltage common)Power source for torque sensor1-GroundIgnition switch ON (II)About 9 VIgnition switch OFF0 V2YELV-ref
(Reference voltage)Reference voltage for torque sensor2-GroundIgnition switch ON (II)3.3 V3PNK/BLURY+
(Relay trigger plus)Drives the motor relay
(motor relay is turned OFF when problem occurs)3-GroundStart the engineBattery voltageIgnition switch OFF0 V4BLU/YELVSP
(Vehicle speed pulse)Detects the vehicle speed signal for the speed sensor or the ECM/PCM (4 pulse/Rev)4-GroundRaise the vehicle off the ground and spin the front wheelAlternating voltage about 0 V-5 V-0 V-5 V5BLUNEP
(Engine pulse)Detect the engine pulse5-GroundStart the engineAbout 0 V-Battery Voltage6YELIG1
(Ignition 1)Power source for activating the system6-GroundIgnition switch ON (II)Battery voltageIgnition switch OFF0 V7GRY/BLUSG
(Sealed ground)Ground for the sealed line7-Ground——————8BRNSE
(Sensor earth)Ground for the torque sensor8-Ground——————9REDSub
(Sub voltage)Defects torque sensor signal9-GroundStart the engine and turn the steering wheelAbout
0.5 V«4.5 V10BLUMain
(Main voltage)Detects torque sensor signal10-Ground11BRNSCS
(Service check signal)Detects service check connector signal—————————13YEL/REDWLP
(Warning lamp)Drives the EPS indicator light13-GroundEPS indicatorONBattery voltageOFF0 V14GRYDIAG-H
(Diagnosis-H)Communicate with Honda PGM-Tester————————— motor 4-Ground