Honda Civic Service Manual page 516

EPS Gontrol Unit Inputs and Outputs at Connestor C (20P1
EPS CONTROL UNIT CONNECTOR C (2OP)
Wire side of female terminals
T
erminal
numbel
Wire color Terminal sign
{Terminel name}
Descriplion
Measuremeni
Terminals Conditions
{lqnition switch ON {lll)
Voltage
2
P N K
T/S GND
(Torque sensor qround)
Ground for the torque
ORN
vccl
(Voltaqe common 1
Power source fortorque
3-Ground tartthe enqrne
Ba$erv voltaqe
O V
5
YEUBED VT6
(Voltaqe torque 6)
Detects torque sensor
stonal
5 Ground Startthe engine and
turn the steerino wheel
About
YEUBLU
(Warninq lamp)
Drives the EPS indicator
l i d h r
6 Ground E P S O N
tnotcatol
uTl-
O V
Banerv voltaqe
7
BLUAVHT
VSP
( V e h i c l e s p e e d p u l s e i
Detects the vehicle speed
input signal for the speed
sensor or the ECM (4 pulse/
Raise the vehicle off the
ground and spin the
Alternating
voltage about
O V 5 V O V - 5 V
BRN S C S
{Servjco check siqnal)
Detects service check
8-Ground SCS not grounded Battery voltage
1 0 YEL
I G 1
llqnition 1
Power source for activating 10-Ground
on switch ON (ll)
Batterv voltaqe
on switch OFF
1 1
G RN//EL
vcc2
(Voltaqe common 2)
Drives the torque sensor
1'l-Ground tan the enoine
A b o u t 5 V
o n s w i t c h O F F
8LU/ORN
VT3
(Voltaoe toroue 3)
Detects torque sensor
13-Ground Startthe engine and
trrrn the steerino wheel
About
5 - 0 v
YEUBLK T/SIG
(Torque sensor F/S
Detects torque sensor
srgnal
15-GroundStartthe engine
Momentarily 5 V
1'l
LT GRN/
B I K
PSW
iPower steerino switch)
Provides power steering
switch sional
l7-Ground Startthe engine and
nrrn the steerino wheel
0 - 1 2 V
1 9
BLU
N E P
Detects the engine pulse
19-GroundStartthe engine, and let
;t idte
20 GRY
DIAG-H Communications with
Honda PGNI Tester
20-Ground PGM Tester not 5 V
17-25