Subaru IMPREZA 2002 Service Manual page 346

ENGINE CONTROL MODULE (ECM) I/O SIGNAL
ENGINE (DIAGNOSTICS)
Crank-
shaft posi-
tion sensor
5. Engine Control Module (ECM) I/O Signal
A: ELECTRICAL SPECIFICATION
Signal (+) 8135 1 0 -7 to +7
Signal (-) 8135 8 0 0
Shield 8135 10 0 0
to
Camshaft
position
Sensor
to
@
~~ ~~
Signal (+) 8135
2 0
-7 to +7
Signal (-) 8135 9 0 0
Shield 8135 10 0
0
to
@ i j $
Throttle
position
sensor
I
02M2267A
Fully closed: 0.2
-
1 .O
Fully opened: 4.2
-
4.7
8136 15 5 5
16 0 0
Signal 8136 17
Power
GND (sen- 8136
sor)
supply
Signal (V)
' O n-
Terminal
Ignition
sw
ON
(Engine OFF)
I
Engine ON (Idling)
Content
I
nF:or
I
NO.
Rear
OXY-
gen sen-
sor
Signal 8136 18 0 0
-
0.9
8136 24 0 0
16 0 0
Shield
GND (sen- 8136
sor)
Front oxy-
gen ( W
Sensor
heater
Signal 1
8134 22 0 - 1.0 0-1.0
Signal2 8134 23 0 - 1.0 0 - 1.0
.
-
Engine Signal
coolant
8136 14 1
.o -
1.4 1.0- 1.4
I
8134
I
21
I
0 - 1.0 0 - 1.0
I
Rear oxygen sensor
heater signal
tempera-
ture sen-
sor
16 0 0
GND (sen- B1 36
sor)
Vehicle speed signal
I
8135
I
24
I
0 or 5 Oor5
I
Note
Sensor output waveform
-
-
Sensor output waveform
-
After warm-up the engine.
After warm-up the engine.
"5" and " 0 are repeatedly dis-
played when vehicle is driven.
~
EN(S0HC)-22