EN(H4SO)(diag)-20
Engine Control Module (ECM) I/O Signal
ENGINE (DIAGNOSTICS)
Fuel pump relay control
B136
12
ON: 0.5 or less
OFF: 10 — 13
ON: 0.5 or less
OFF: 12 — 14
—
A/C relay control
B136
9
ON: 0.5 or less
OFF: 10 — 13
ON: 0.5 or less
OFF: 12 — 14
—
Radiator fan relay 1 control
B136
18
ON: 0.5 or less
OFF: 10 — 13
ON: 0.5 or less
OFF: 12 — 14
—
Radiator fan relay 2 control
B136
29
ON: 0.5 or less
OFF: 10 — 13
ON: 0.5 or less
OFF: 12 — 14
—
Self-shutoff control
B136
23
0.5 or less
0.5 or less
—
Malfunction indicator light
B136
11
—
—
Light “ON”: 1 or less
Light “OFF”: 10 — 14
Engine speed output
B136
22
—
0 — 13 or more
Waveform
Oil temperature sensor signal
B134
23
1.0 — 1.4
1.0 — 1.4
After engine is warmed
up.
Blow-by leak diagnosis
B134
30
0
0
—
Purge control solenoid valve
B137
29
ON: 1 or less
OFF: 10 — 13
ON: 1 or less
OFF: 12 — 14
Duty waveform
EGR valve
Signal 1
B134
8
0 or 10 — 13
0 or 12 — 14
Waveform
Signal 2
B134
9
0 or 10 — 13
0 or 12 — 14
Waveform
Signal 3
B134
10
0 or 10 — 13
0 or 12 — 14
Waveform
Signal 4
B134
20
0 or 10 — 13
0 or 12 — 14
Waveform
Power steering oil pressure
switch
B134
33
ON: 1 or less
OFF: 10 — 13
ON: 1 or less
OFF: 12 — 14
—
Blower fan switch
B135
11
ON: 0
OFF: 10 — 13
ON: 0
OFF: 12 — 14
Manual A/C model
A/C middle pressure switch
B136
33
ON: 0
OFF: 10 — 13
ON: 0
OFF: 12 — 14
—
Oil switching
solenoid valve
RH
Signal (+)
B137
25
0
Duty waveform
Drive frequency: 300 Hz
Signal (–)
B137
24
0
0
—
Oil switching
solenoid valve
LH
Signal (+)
B137
31
0
Duty waveform
Drive frequency: 300 Hz
Signal (–)
B137
30
0
0
—
Variable valve lift diagnosis oil
pressure switch RH
B134
31
0
0
—
Variable valve lift diagnosis oil
pressure switch LH
B134
32
0
0
—
Front oxygen
(A/F) sensor
Signal (+)
B135
9
—
2.7 — 2.9
—
Signal (–)
B135
8
—
2.35 — 2.25
—
Shield
B135
1
0
0
—
Manifold absolute pressure
sensor
B134
6
3.4 — 3.8
1.4 — 1.8
—
Air flow
sensor
Signal
B135
26
—
0.3 — 4.5
—
Shield
B135
35
0
0
—
Ground
B135
34
0
0
—
Intake air temperature sensor
signal
B135
18
0.3 — 4.6
0.3 — 4.6
—
Immobilizer communication 1
B136
26
1 or less
mo
4 or more
1 or less
mo
4 or more
—
Immobilizer communication 2
B136
34
1 or less
mo
4 or more
1 or less
mo
4 or more
—
Contents
Connector
No.
Terminal
No.
Signal (V)
Note
Ignition SW ON
(engine OFF)
Engine ON
(idling)
Summary of Contents for 2009 IMPREZA
Page 18: ...PC 4 Precaution PRECAUTION...
Page 21: ...NT 4 Note NOTE Lift Rigid rack A Attachment NT 00241 A A Attachment NT 00242 A...
Page 23: ...NT 6 Note NOTE A Front B Rear 1 Front crossmember 2 Rear differential 1 2 A B NT 00210...
Page 66: ...PI 22 Pre delivery Inspection PRE DELIVERY INSPECTION...
Page 112: ...PM 48 A C Filter PERIODIC MAINTENANCE SERVICES...
Page 219: ...IN H4SO 10 Resonator Chamber INTAKE INDUCTION...
Page 324: ...ME H4SO 106 Engine Noise MECHANICAL...
Page 388: ...SP H4SO 6 Accelerator Pedal SPEED CONTROL SYSTEMS...
Page 395: ...IG H4SO 8 Spark Plug Cord IGNITION...
Page 418: ...SC H4SO 24 Battery STARTING CHARGING SYSTEMS...
Page 725: ...EN H4SO diag 308 General Diagnostic Table ENGINE DIAGNOSTICS...
Page 926: ...GD H4SO 202 Diagnostic Trouble Code DTC Detecting Criteria GENERAL DESCRIPTION...
Page 1181: ...EX H4DOTC 16 Muffler EXHAUST...
Page 1212: ...CO H4DOTC 32 Engine Cooling System Trouble in General COOLING...
Page 1221: ...IG H4DOTC 8 Ignition Coil IGNITION...
Page 1818: ...GD H4DOTC 230 Diagnostic Trouble Code DTC Detecting Criteria GENERAL DESCRIPTION...
Page 2154: ...5MT 82 General Diagnostic Table MANUAL TRANSMISSION AND DIFFERENTIAL...
Page 2227: ...RS 20 General Diagnostic Table REAR SUSPENSION...
Page 2364: ...DS 36 General Diagnostic Table DRIVE SHAFT SYSTEM...
Page 2615: ...BR 48 General Diagnostic Table BRAKE...
Page 2624: ...PB 10 General Diagnostic Table PARKING BRAKE...
Page 2681: ...PS 58 General Diagnostic Table POWER ASSISTED SYSTEM POWER STEERING...
Page 2730: ...AC 50 General Diagnostic Table HVAC SYSTEM HEATER VENTILATOR AND A C...
Page 2961: ...SB 22 Rear Seat Belt SEAT BELT SYSTEM...
Page 3035: ...COM 6 Horn Switch COMMUNICATION SYSTEM...
Page 3070: ...GW 36 Wiper Deicer System GLASS WINDOWS MIRRORS...
Page 3092: ...IDI 22 Clock INSTRUMENTATION DRIVER INFO...
Page 3158: ...SL 54 Immobilizer Antenna SECURITY AND LOCKS...
Page 3167: ...SR 10 Sunshade SUNROOF T TOP CONVERTIBLE TOP SUNROOF...
Page 3240: ...EI 74 Ornament EXTERIOR INTERIOR TRIM...
Page 3286: ...CC 12 Neutral Position Switch CRUISE CONTROL SYSTEM...
Page 3311: ...CC diag 26 Diagnostic Procedure with Cancel Code CRUISE CONTROL SYSTEM DIAGNOSTICS...
Page 3421: ...LAN diag 88 General Diagnostic Table LAN SYSTEM DIAGNOSTICS...
Page 3486: ...WI 67 Remote Engine Start System WIRING SYSTEM...