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Home >> Subaru >> 2010 >> Legacy Premium, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (Engine Controls - Engine (Diagnostics) (H4DOTC - 2.5L DOHC Turbo)) >> Electrical Component Location >> Engine Control Module (ECM) I/O Signal >> Electrical Specification

Electrical Specification

WARNING: This page is about a different variant/trim than selected.
Fig 1: Identifying Engine Control Module I/O Signal Connector Terminals
G05334606Courtesy of SUBARU OF AMERICA, INC.
TERMINAL CONNECTORE REFERENCE CHART

Description Connector No. Terminal No. Signal (V) Note
Ignition SW ON (engine OFF) Engine ON (idling)
Crankshaft position sensor Signal (+) B137 17 0 -7 - +7 Waveform
Signal (-) B137 25 0 0 -
Shield B137 31 0 0 -
Front oxygen (A/F) sensor Signal (+) B136 19 2.8 - 3.2 2.8 - 3.2 -
Signal (-) B136 18 2.4 - 2.7 2.4 - 2.7 -
Shield B136 9 0 0 -
Rear oxygen sensor Signal B136 20 0 0 - 0.9 -
Shield B136 9 0 0 -
Ground (sensor) B135 30 0 0 -
Front oxygen (A/F) sensor heater Signal 1 B136 6 - - Waveform
Signal 2 B136 5 - - Waveform
Rear oxygen sensor heater signal B135 6 0 - 13 - Waveform
Engine coolant temperature sensor Signal B137 22 1.0 - 1.4 1.0 - 1.4 After engine is warmed up.
Ground (sensor) B134 29 0 0 After engine is warmed up.
Air flow sensor Signal B136 22 - 0.3 - 4.5 -
Shield B136 10 0 0 -
Ground B136 11 0 0 -
Intake air temperature sensor signal B136 31 0.3 - 4.6 0.3 - 4.6 -
Wastegate control solenoid valve B134 33 0 or 10 - 13 0 or 12 - 14 Waveform
Starter switch B136 16 0 0 Cranking: 8 - 14
Ignition switch B136 30 10 - 13 12 - 14 -
Neutral position switch B136 35 ON: 0 OFF: 10 - 13 ON: 0 OFF: 12 - 14 -
Delivery (test) mode fuse B136 34 10 - 13 12 - 14 When fuse is installed: 0
Knock sensor Signal B137 2 2.8 2.8 -
Shield B137 8 0 0 -
Back-up power supply B136 2 10 - 13 12 - 14 Ignition switch "OFF": 10 - 13
Control module power supply B137 7 10 - 13 12 - 14 -
B136 1 10 - 13 12 - 14 -
Sensor power supply B134 19 5 5 -
B135 22 5 5 -
Ignition control #1 B134 21 0 12 - 14 Waveform
#2 B134 22 0 12 - 14 Waveform
#3 B134 31 0 12 - 14 Waveform
#4 B134 32 0 12 - 14 Waveform
Fuel injector #1 B134 10 10 - 13 1 - 14 Waveform
#2 B134 11 10 - 13 1 - 14 Waveform
#3 B134 12 10 - 13 1 - 14 Waveform
#4 B134 13 10 - 13 1 - 14 Waveform
Fuel pump control unit Control B136 33 0 or 5 0 or 5 Waveform
Diagnosis signal B135 10 0 or 10 - 13 12 - 14 -
Radiator fan relay 1 control B135 11 ON: 0.5 or less OFF: 10 - 13 ON: 0.5 or less OFF: 12 - 14 -
Radiator fan relay 2 control B135 12 ON: 0.5 or less OFF: 10 - 13 ON: 0.5 or less OFF: 12 - 14 -
Malfunction indicator light B135 33 - - Light "ON": 1 or less Light "OFF": 10 - 14
Engine speed output B135 15 - 0 - 13 or more Waveform
Purge control solenoid valve 1 B137 6 ON: 1 or less OFF: 10 - 13 ON: 1 or less OFF: 12 - 14 Waveform
Purge control solenoid valve 2 B137 15 ON: 1 or less OFF: 10 - 13 ON: 1 or less OFF: 12 - 14 Waveform
Manifold absolute pressure sensor Signal B137 20 1.7 - 2.4 1.1-1.6 -
Power supply B134 19 5 5
Ground (sensor) B134 29 0 0
SSM communication line B135 14 1 or less ↔ 4 or more 1 or less ↔ 4 or more -
Electric throttle control Main B134 18 0.64 - 0.72 Fully open: Approx. 4.04 0.64 - 0.72 (After engine is warmed up.) Fully closed: Approx. 0.6 Fully open: Approx. 4.04
Sub B134 28 1.51 -1.58 Fully open: Approx. 4.232 1.51 -1.58 (After engine is warmed up.) Fully closed: Approx. 1.48 Fully open: Approx. 4.232
Power supply B134 19 5 5 -
Ground (sensor) B134 29 0 0 -
Electronic throttle control motor (+) B134 2 Duty waveform Duty waveform Drive frequency: 500 Hz
Electronic throttle control motor (-) B134 1 Duty waveform Duty waveform Drive frequency: 500 Hz
Electronic throttle control motor power supply B135 7 10 - 13 12 - 14 -
Electronic throttle control motor relay B135 17 ON: 0 OFF: 10 - 13 ON: 0 OFF: 12 - 14 When ignition switch is turned to ON: ON
Intake oil flow control solenoid valve (LH) Signal (+) B134 17 ON: 10 - 13 OFF: 0. ON: 12 - 14 OFF: 0 -
Signal (-) B134 16 0 0 -
Intake oil flow control solenoid valve (RH) Signal (+) B134 34 ON: 10 - 13 OFF: 0 ON: 12 - 14 OFF: 0 -
Signal (-) B134 27 0 0 -
Exhaust oil flow control solenoid valve (LH) Signal (+) B134 5 ON: 10 - 13 OFF: 0 ON: 12 - 14 OFF: 0 -
Signal (-) B134 14 0 0 -
Exhaust oil flow control solenoid valve (RH) Signal (+) B134 7 ON: 10 - 13 OFF: 0 ON: 12 - 14 OFF: 0 -
Signal (-) B134 15 0 0 -
Intake camshaft position sensor (LH) B137 16 0 or 5 0 or 5 Waveform
Intake camshaft position sensor (RH) B137 24 0 or 5 0 or 5 Waveform
Exhaust camshaft position sensor (LH) B137 29 0 or 5 0 or 5 Waveform
Exhaust camshaft position sensor (RH) B137 23 0 or 5 0 or 5 Waveform
Camshaft position sensor ground B137 30 0 0 -
Accelerator pedal position sensor Main sensor signal B135 23 Fully closed: 1
Fully opened: 3.3
Fully closed: 1
Fully opened: 3.3
-
Shield B136 4 0 0 -
Main power supply B135 21 5 5 -
Ground (main sensor) B135 29 0 0 -
Sub signal sensor B135 31 Fully closed: 1
Fully opened: 3.3
Fully closed: 1
Fully opened: 3.3
-
Sub power supply B135 22 5 5 -
Ground (sub sensor) B135 30 0 0 -
Starter relay B135 26 ON: 0 OFF: 10 - 13 ON: 0 OFF: 12 - 14 ON: cranking
Clutch switch B135 9 When clutch pedal is depressed: 0
When clutch pedal is released: 10 - 13
When clutch pedal is depressed: 0
When clutch pedal is released: 12 - 14
-
Brake switch 1 (brake switch) B136 15 When brake pedal is depressed: 0
When brake pedal is released: 10 - 13
When brake pedal is depressed: 0
When brake pedal is released: 12 - 14
-
Brake switch 2 (stop light switch) B136 3 When brake pedal is depressed: 10 - 13 When brake pedal is released: 0 When brake pedal is depressed: 12 - 14 When brake pedal is released: 0 -
Cruise control command switch B136 12 When operating nothing: 3.5 - 4.5 When operating RES/ACC:2.5 -3.5 When operating vehicle distance setting: 1.5 - 2.5 When operating SET/COAST: 0.5-1.5 When operating cancel: 0 - 0.5 When operating nothing: 3.5 - 4.5 When operating RES/ACC:2.5 -3.5 When operating vehicle distance setting: 1.5 - 2.5 When operating SET/COAST: 0.5-1.5 When operating cancel: 0 - 0.5 -
Cruise control main switch B136 13 ON: 0 OFF: 5 ON: 0 OFF: 5 -
CAN communication (Hi) B136 17 - - -
(Lo) B136 28 - - -
Self-shutoff control B135 13 0 0 -
Power steering oil pressure switch B137 28 10 - 13 ON: 0 OFF: 12 - 14 -
Oil level switch B136 26 0 0 Oil level LOW: 10 - 14
Tumble generator valve position sensor signal (RH) B137 11 Fully closed: 0.4 - 1.2
Fully open: 2.8 - 4.6
Fully closed: 0.4 - 1.2
Fully open: 2.8 - 4.6
-
Tumble generator valve position sensor signal (LH) B137 10 Fully closed: 3.8 - 4.9
Fully open: 0.2 - 0.9
Fully closed: 3.8 - 4.9
Fully open: 0.2 - 0.9
-
Tumble generator valve (RH closed) B134 26 0 or 10 - 13 0 or 12 - 14 -
Tumble generator valve (LH closed) B134 24 0 or 10 - 13 0 or 12 - 14 -
Tumble generator valve (RH open) B134 25 0 or 10 - 13 0 or 12 - 14 -
Tumble generator valve (LH open) B134 23 0 or 10 - 13 0 or 12 - 14 -
Immobilizer communication B135 25 - - -
Fuel tank pressure sensor B136 21 2.3 - 2.7 2.3 - 2.7 -
Pressure control solenoid valve B135 3 ON: 1 or less OFF: 10 - 13 ON: 1 or less OFF: 12 - 14 -
Drain valve B135 4 ON: 1 or less OFF: 10 - 13 ON: 1 or less OFF: 12 - 14 -
Fuel temperature sensor B136 23 2.5 - 3.8 2.5 - 3.8 Outside temperature: 25°C (77°F)
Ground Sensor B134 29 0 0 -
B135 30 0 0 -
Engine 1 B134 6 0 0 -
Engine 2 B134 4 0 0 -
Engine 3 B134 3 0 0 -
Engine 4 B137 1 0 0 -
Engine 5 B137 3 0 0 -
Body B136 4 0 0 -

Input/output name: 

Fig 2: Intake/Exhaust Camshaft Position Sensor And Crankshaft Posotion Sensor Input/Output Signal
G06647725Courtesy of SUBARU OF AMERICA, INC.
Fig 3: ECM - Circuit Diagram (1 Of 5)
G06647726Courtesy of SUBARU OF AMERICA, INC.
Fig 4: ECM - Circuit Diagram (2 Of 5)
G06647727Courtesy of SUBARU OF AMERICA, INC.
Fig 5: ECM - Circuit Diagram (3 Of 5)
G06647728Courtesy of SUBARU OF AMERICA, INC.
Fig 6: ECM - Circuit Diagram (4 Of 5)
G06647729Courtesy of SUBARU OF AMERICA, INC.
Fig 7: ECM - Circuit Diagram (5 Of 5)
G06647730Courtesy of SUBARU OF AMERICA, INC.