Subaru 2009 IMPREZA, Service Manual

Page: 436 / 3619

EN(H4SO)(diag)-19
Engine Control Module (ECM) I/O Signal
ENGINE (DIAGNOSTICS)
Accelerator
pedal posi-
tion sensor
Main sensor
signal
B135 23
Fully closed: 1.0
Fully opened: 3.5
Fully closed: 1.0
Fully opened: 3.5
—
Main power
supply
B135 21 5 5 —
Ground
(Main sensor)
B135 29 0 0 —
Sub sensor
signal
B135 31
Fully closed: 1.0
Fully opened: 3.5
Fully closed: 1.0
Fully opened: 3.5
—
Sub power
supply
B135 22 5 5 —
Ground
(Sub sensor)
B135 30 0 0 —
Rear oxygen
sensor
Signal B135 4 0 0 — 0.9 —
Shield B135 1 0 0 —
Front oxygen
(A/F) sensor
heater Signal 1 B136 3 10 — 13 1 — 14 Duty waveform
Signal 2 B136 2 10 — 13 1 — 14 Duty waveform
Rear oxygen sensor heater
signal
B136 4 10 — 13 1 — 14 Duty waveform
Engine coolant temperature
sensor
B134 34 1.0 — 1.4 1.0 — 1.4
After engine is warmed
up.
Starter switch B136 32 0 0
AT model:
Cranking: 8 — 14
MT model:
Cranking with the clutch
pedal pressed: 8 — 14
Starter relay control B136 20
ON: 0.5 or less
OFF: 10 — 13
ON: 0.5 or less
OFF: 12 — 14
—
A/C switch B136 24
ON: 10 — 13
OFF: 0
ON: 12 — 14
OFF: 0
—
Ignition switch B135 19 10 — 13 12 — 14 —
Neutral
position
switch
AT
B136 31
ON: 0
OFF: 12
r
0.5
AT model: Switch is ON
when select lever is
shifted into “P” range or
“N” range.
MT
ON: 0
OFF: 12
r
0.5
MT model: Switch is ON
when the shift lever is in
neutral.
Delivery (test) mode connector B135 27 10 — 13 13 — 14 When connected: 0
Knock sensor
Signal B134 15 2.5 2.5 —
Shield B134 25 0 0 —
Back-up power supply B135 5 10 — 13 12 — 14
Ignition switch “OFF”:
10 — 13
Control module power supply
B134 7 10 — 13 12 — 14 —
B135 2 10 — 13 12 — 14 —
Ignition
control
#1, #2 B137 18 0 1 — 3.4 Waveform
#3, #4 B137 19 0 1 — 3.4 Waveform
Fuel injector
#1 B137 8 10 — 13 1 — 14 Waveform
#2 B137 9 10 — 13 1 — 14 Waveform
#3 B137 10 10 — 13 1 — 14 Waveform
#4 B137 11 10 — 13 1 — 14 Waveform
Contents
Connector
No.
Terminal
No.
Signal (V)
Note
Ignition SW ON
(engine OFF)
Engine ON
(idling)