Subaru SVX 1992 Manual page 812

4-3 [T3DO]
STEERING SYSTEM
D : SYSTEM COMPOSITION TABLE
System Component parts Description
Characteristics
"Assist'
amount Warning
Self-diagnostic
control
control
function
Vehicle speed sensor 2
Detects vehicle speed .
0 0
ECU (MPFI) Detects engine revolution . 0 0
Read memory
Connects read memory 0
Input signal mode terminal mode circuit .
(sensor)
Diagnosis Test mode
Connects test mode cir-
0 connector terminal cuit .
Diagnosis Connects diagnosis mode 0
mode terminal circuit .
Computes and sends
Control unit ECU
control output signal in
0 0 0 0
relation to input signal
received .
Regulates reaction cham-
ber oil pressure (Maxi-
Output signal
Solenoid
mum reaction force
(heavy steering opera-
0 0
(Actuator)
tion) occurs when sole-
noid is "OFF") .
I f Warning lamp i Indicates trouble code . I I 0 O
E: INPUT-OUTPUT DIAGRAM
Back up power source
Power unit source
71G SW
'
Combination meter
T-1 C' I
i
\
'-- `
v1
Warning lamp
Engine r.p .m . signa r ~ n l
ECU (MPFI) _
I
Vehicle P
~ SOL 1 I I
speed signal I
U r~'n I
r
. . .
____-_~
SOL2 I
I
Vehicle speed
L_J
sensor
Control vave solenoid
Battery
Self diagnosis connector
Test mode terminal
Read memory terminal
ECU
C4564
Fig . 177
82