Subaru 2009 IMPREZA Service Manual page 437

ENGINE (DIAGNOSTICS)
Contents
Fuel pump relay control
A/C relay control
Radiator fan relay 1 control
Radiator fan relay 2 control
Self-shutoff control
Malfunction indicator light
Engine speed output
Oil temperature sensor signal
Blow-by leak diagnosis
Purge control solenoid valve
Signal 1
Signal 2
EGR valve
Signal 3
Signal 4
Power steering oil pressure
switch
Blower fan switch
A/C middle pressure switch
Oil switching Signal (+)
solenoid valve
Signal (–)
RH
Oil switching Signal (+)
solenoid valve
Signal (–)
LH
Variable valve lift diagnosis oil
pressure switch RH
Variable valve lift diagnosis oil
pressure switch LH
Signal (+)
Front oxygen
Signal (–)
(A/F) sensor
Shield
Manifold absolute pressure
sensor
Signal
Air flow
Shield
sensor
Ground
Intake air temperature sensor
signal
Immobilizer communication 1
Immobilizer communication 2
Engine Control Module (ECM) I/O Signal
Connector Terminal
No. No.
B136 12
B136 9
B136 18
B136 29
B136 23
B136 11
B136 22
B134 23
B134 30
B137 29
B134 8
B134 9
B134 10
B134 20
B134 33
B135 11
B136 33
B137 25
B137 24
B137 31
B137 30
B134 31
B134 32
B135 9
B135 8
B135 1
B134 6
B135 26
B135 35
B135 34
B135 18
B136 26
B136 34
EN(H4SO)(diag)-20
Signal (V)
Ignition SW ON Engine ON
(engine OFF)
ON: 0.5 or less ON: 0.5 or less
OFF: 10 — 13 OFF: 12 — 14
ON: 0.5 or less ON: 0.5 or less
OFF: 10 — 13 OFF: 12 — 14
ON: 0.5 or less ON: 0.5 or less
OFF: 10 — 13 OFF: 12 — 14
ON: 0.5 or less ON: 0.5 or less
OFF: 10 — 13 OFF: 12 — 14
0.5 or less 0.5 or less
—
— 0 — 13 or more
1.0 — 1.4 1.0 — 1.4
0
ON: 1 or less ON: 1 or less
OFF: 10 — 13 OFF: 12 — 14
0 or 10 — 13 0 or 12 — 14
0 or 10 — 13 0 or 12 — 14
0 or 10 — 13 0 or 12 — 14
0 or 10 — 13 0 or 12 — 14
ON: 1 or less ON: 1 or less
OFF: 10 — 13 OFF: 12 — 14
ON: 0
OFF: 10 — 13 OFF: 12 — 14
ON: 0
OFF: 10 — 13 OFF: 12 — 14
0 Duty waveform
0
0 Duty waveform
0
0
0
— 2.7 — 2.9
— 2.35 — 2.25
0
3.4 — 3.8 1.4 — 1.8
— 0.3 — 4.5
0
0
0.3 — 4.6 0.3 — 4.6
1 or less 1 or less
4 or more 4 or more
1 or less 1 or less
4 or more 4 or more
Note
(idling)
—
—
—
—
—
Light "ON": 1 or less
—
Light "OFF": 10 — 14
Waveform
After engine is warmed
up.
0 —
Duty waveform
Waveform
Waveform
Waveform
Waveform
—
ON: 0
Manual A/C model
ON: 0
—
Drive frequency: 300 Hz
0 —
Drive frequency: 300 Hz
0 —
0 —
0 —
—
—
0 —
—
—
0 —
0 —
—
—
—