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Home >> Subaru >> 2006 >> Baja Turbo, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Engine (Diagnostics) (H4DOTC) >> Engine Control Module (ECM) I/O Signal >> Electrical Specification

Electrical Specification

Fig 1: Identifying Engine Control Module Connector Terminal
G04998010Courtesy of SUBARU OF AMERICA, INC.
ENGINE CONTROL MODULE (ECM) I/O SIGNAL ELECTRICAL SPECIFICATION

Content Connector No. Terminal No. Signal (V) Note
Ignition SW ON (Engine OFF) Engine ON (Idling)
Crankshaft position sensor Signal (+) B135 10 0 -7 -+7 Sensor output waveform
Signal (-) B135 22 0 0 -
Shield B135 31 0 0 -
Rear oxygen sensor Signal B137 25 0 0 - 0.9 -
Shield B137 31 0 0 -
GND (sensor) B136 35 0 0 -
Front oxygen (A/F) sensor heater Signal 1 B134 3 0 - 1.0 - Sensor output waveform
Signal 2 B134 2 0 - 1.0 - Sensor output waveform
Rear oxygen sensor heater signal B135 2 0 - 1.0 - Sensor output waveform
Engine coolant temperature sensor Signal B136 14 1.0 - 1.4 1.0 - 1.4 After warm-up the engine.
GND (sensor) B136 35 0 0 After warm-up the engine.
Vehicle speed signal B135 27 0 or 5 0 or 5 "5" and "0" are repeatedly displayed when vehicle is driven.
Mass airflow sensor Signal B136 23 - 0.3 - 4.5 -
Shield B136 32 0 0 -
GND B136 31 0 0 -
Intake air temperature sensor signal B136 13 0.3 - 4.6 0.3 - 4.6 -
Tumble generator valve position sensor RH Signal B136 27 Fully closed: 3.8 - 4.9
Fully opened: 0.2 - 0.9
-
Power supply B136 16 5 5 -
GND (sensor) B136 35 0 0 -
Tumble generator valve position sensor LH Signal B136 26 Fully closed: 3.8 - 4.9
Fully opened: 0.2 - 0.9
-
Power supply B136 16 5 5 -
GND (sensor) B136 35 0 0 -
Tumble generator valve RH (open) B134 9 0 or 10 - 13 0 or 13 - 14 Sensor output waveform
Tumble generator valve RH (close) B134 8 0 or 10 - 13 0 or 13 - 14 Sensor output waveform
Tumble generator valve LH (open) B134 11 0 or 10 - 13 0 or 13 - 14 Sensor output waveform
Tumble generator valve LH (close) B134 10 0 or 10 - 13 0 or 13 - 14 Sensor output waveform
Wastegate control solenoid valve B134 32 0 or 10 - 13 0 or 13 - 14 Sensor output waveform
Starter switch B137 8 0 0 Cranking: 8 - 14
A/C switch B137 16 ON: 10 - 13
OFF:0
ON: 13 - 14
OFF:0
-
Ignition switch B137 15 10 - 13 13 - 14 -
Neutral position switch B137 9 ON: 10 - 13
OFF:0
ON: 13 - 14
OFF: 0
-
Test mode connector B137 14 10 - 13 13 - 14 When connected: 0
Knock sensor Signal B136 25 2.8 2.8 -
Shield B136 33 0 0 -
Back-up power supply B135 19 10 - 13 13 - 14 Ignition switch "OFF": 10 - 13
Control unit power supply B135 5 10 - 13 13 - 14 -
B135 6 10 - 13 13 - 14 -
Sensor power supply B136 16 5 5 -
Ignition control #1 B135 18 0 13 - 14 Waveform
#2 B135 17 0 13 - 14 Waveform
#3 B135 16 0 13 - 14 Waveform
#4 B135 15 0 13 - 14 Waveform
Fuel injector #1 B136 6 10 - 13 1 - 14 Waveform
#2 B136 5 10 - 13 1 - 14 Waveform
#3 B136 4 10 - 13 1 - 14 Waveform
#4 B136 3 10 - 13 1 - 14 Waveform
Fuel pump control unit Signal 1 B135 26 0 or 5 0 or 5 Sensor output waveform
Signal 2 B137 28 10 - 13 13 - 14 -
A/C relay control B133 33 ON: 0.5 or less
OFF: 10 - 13
ON: 0.5 or less
OFF: 13 - 14
-
Radiator fan relay 1 control B135 25 ON: 0.5 or less
OFF: 10 - 13
ON: 0.5 or less
OFF: 13 - 14
-
Radiator fan relay 2 control B135 24 ON: 0.5 or less
OFF: 10 - 13
ON: 0.5 or less
OFF: 13 - 14
Model with A/C only
Malfunction indicator lamp B134 17 - - Light "ON": 1 or less
Light "OFF": 10 - 14
Engine speed output B134 23 - 0 - 13, or more Waveform
Purge control solenoid valve B134 14 ON: 1 or less
OFF: 10 - 13
ON: 1 or less
OFF: 13 - 14
Sensor output waveform
Manifold absolute pressure sensor Signal B136 22 1.7 - 2.4 1.1 - 1.6 -
Power supply B136 16 5 5
GND (sensor) B136 35 0 0
Fuel tank pressure sensor Signal B136 21 2.3 - 2.7 2.3 - 2.7 The valve operates when fuel filler cap is removed and reinstalled.
GND (sensor) B136 35 0 0 -
Pressure control solenoid valve B134 12 ON: 1 or less
OFF: 10 - 13
ON: 1 or less
OFF: 13 - 14
-
Drain valve B134 13 ON: 1 or less
OFF: 10 - 13
ON: 1 or less
OFF: 13 - 14
-
Fuel tank sensor control valve B134 24 ON: 1 or less
OFF: 10 - 13
ON: 1 or less
OFF: 13 - 14
-
Fuel level sensor B136 20 0.12 - 4.75 0.12 - 4.75 -
Fuel temperature sensor signal B136 12 2.5 - 3.8 2.5 - 3.8 Ambient temperature: 25°C (75°F)
Blow-by leak diagnosis signal B137 24 0 0 When disconnection (malfunction): 5
Small light switch B137 12 ON: 0
OFF: 10 - 13
ON: 0
OFF: 13 - 14
-
Blower fan switch B137 13 ON: 0
OFF: 10 - 13
ON: 0
OFF: 13 - 14
-
Rear defogger switch B137 11 ON: 0
OFF: 10 - 13
ON: 0
OFF: 13 - 14
-
Power steering oil pressure switch B137 10 10 - 13 ON: 0
OFF: 13 - 14
-
Front oxygen (A/F) sensor signal (+) B134 33 2.8 - 3.2 2.8 - 3.2 -
Front oxygen (A/F) sensor signal (-) B134 26 2.4 - 2.7 2.4 - 2.7 -
Front oxygen (A/F) sensor shield B134 25 0 0 -
SSM/GST communication line B137 20 Less than 1 ← → More than 4 Less than 1 ← → More than 4 -
GND (injectors) B137 7 0 0 -
GND (ignition system) B135 12 0 0 -
GND (power supply) B135 4 0 0 -
B135 1 0 0 -
GND (control systems) B137 1 0 0 -
B137 2 0 0 -
GND (front oxygen (A/F) sensor heater 1) B134 7 0 0 -
GND (front oxygen (A/F) sensor heater 2) B134 6 0 0 -
Camshaft position sensor (LH) B135 8 0 - 0.9 ON: 0
OFF: 4.7 - 5.3
Sensor output waveform
Camshaft position sensor (RH) B135 9 0 - 0.9 ON: 0
OFF: 4.7 - 5.3
Sensor output waveform
Electric throttle Main B136 18 0.64 - 0.72
Fully opened: 3.96
0.64 - 0.72 (After engine warm-up) Fully closed: 0.6
Fully opened: 3.96
Sub B136 29 1.51 - 1.58
Fully opened: 4.17
1.51 - 1.58 (After engine warm-up) Fully closed: 1.48
Fully opened: 4.17
Power supply B136 16 5 5 -
GND (sensor) B137 3 0 0 -
Electric throttle motor (+) B137 5 Duty waveform Duty waveform Driving frequency: 500Hz
Electric throttle motor (-) B137 4 Duty waveform Duty waveform Driving frequency: 500Hz
Electric throttle motor power supply B137 6 10 - 13 13 - 14 -
Electric throttle motor relay B135 35 ON: 0
OFF: 10 - 13
ON: 0
OFF: 13 - 14
When ignition switch is ON: ON
Oil flow control solenoid valve (LH) Signal (+) B134 19 ON: 10 - 13
OFF:0
ON: 13 - 14
OFF:0
-
Signal (-) B134 29 0 0 -
Oil flow control solenoid valve (RH) Signal (+) B134 18 ON: 10 - 13
OFF:0
ON: 13 - 14
OFF:0
-
Signal (-) B134 28 0 0 -
Accelerator position sensor Main B136 17 Fully closed: 1
Fully opened: 3.5
Fully closed: 1
Fully opened: 3.5
-
Power supply B136 15 5 5 -
GND (sensor) B136 34 0 0 -
Sub B136 28 Fully closed: 1
Fully opened: 3.5
Fully closed: 1
Fully opened: 3.5
-
Cruise control set light B134 16 ON: 0
OFF: 10 - 13
ON: 0
OFF: 13 - 14
-
Main light B134 15 ON: 0
OFF: 10 - 13
ON: 0
OFF: 13 - 14
-
Clutch switch B134 1 When clutch pedal is depressed: 0 When clutch pedal is released: 10 - 13 When clutch pedal is depressed: 0 When clutch pedal is released: 13 - 14 -
SET/COAST switch B136 11 ON: 10 - 13
OFF: 0
ON: 13 - 14
OFF: 0
-
Brake switch 1 B136 9 When brake pedal is depressed: 0 When brake pedal is released: 10 - 13 When brake pedal is depressed: 0 When brake pedal is released: 13 - 14 -
Brake switch 2 B136 8 When brake pedal is depressed: 10 - 13 When brake pedal is released: 0 When brake pedal is depressed: 13 - 14 When brake pedal is released: 0 -
RESUME/ACCEL switch B136 10 ON: 10 - 13
OFF:0
ON: 13 - 14
OFF:0
-
Main switch B136 7 ON: 10 - 13
OFF: 0
ON: 13 - 14
OFF: 0
-
CAN communication Signal (+) B137 18 Pulse signal -
Signal (-) B137 26 Pulse signal -