Electrical Specification

Courtesy of SUBARU OF AMERICA, INC.

Description		Connector No.	Terminal No.	Signal (V)		Remarks
Description		Connector No.	Terminal No.	Ignition SW ON (Engine OFF)	Engine ON (Idling)	Remarks
Crankshaft position sensor	(+) signal	E158	19	0 or 5	0 or 5	Waveforms 1 and 10
Crankshaft position sensor	Ground	E158	31	0	0	-
Intake camshaft position sensor	RH	E158	20	0 or 5	0 or 5	Waveform 1
Intake camshaft position sensor	LH	E158	21	0 or 5	0 or 5	Waveform 1
Exhaust camshaft position sensor	RH	E158	32	0 or 5	0 or 5	Waveform 1
Exhaust camshaft position sensor	LH	E158	33	0 or 5	0 or 5	Waveform 1
Camshaft position sensor ground		E158	34	0	0	-
Front oxygen (A/F) sensor	IP (+) signal	E158	15	2 - 3	2 - 4	Waveform 2
	VS (+) signal	E158	27	2 - 3	3 - 5	Waveform 2
	COM signal	E158	39	2 - 3	3 - 4	-
	Heater signal	E159	9	Battery voltage	0 or battery voltage	Waveform 4
Rear oxygen sensor	(+) signal	E158	16	2 - 3	2 - 3	Waveform 3
	(-) signal	E158	42	2 - 3	2 - 3	-
	Heater signal	E159	3	Battery voltage	0 or battery voltage	Waveform 4
Air flow sensor	Signal	B134	16	0	1	-
Air flow sensor	Ground	B134	28	0	0	-
Intake air temperature sensor (Integrated with air flow sensor)		E158	5	2 - 3	2 - 3	-
Engine coolant temperature sensor		E158	38	1 - 3	1 - 3	-
Engine oil temperature sensor		E158	2	1 - 3	1 - 3	-
Manifold absolute pressure sensor		E158	4	2	1	-
Intake air temperature sensor (Integrated with manifold absolute pressure sensor)		E158	25	2 - 3	2 - 3	-
Fuel pressure sensor		E158	6	1	1	-
Knock sensor	RH	E158	14	2.5	2.5	-
Knock sensor	LH	E158	26	2.5	2.5	-
Accelerator pedal position sensor	Main power supply	B134	30	5	5	-
	Main signal	B134	17	Fully closed: 0.4 - 1 Fully opened: 2.4 - 3.7	Fully closed: 0.4 - 1 Fully opened: 2.4 - 3.7	Waveforms 2, 3, 5 and 6
	Main ground	B134	31	0	0	-
	Sub signal	B134	29	Fully closed: 0.4 - 1 Fully opened: 2.4 - 3.7	Fully closed: 0.4 - 1 Fully opened: 2.4 - 3.7	-
Tumble generator valve actuator RH	Position signal	E158	40	1	1	Fully closed: 1 Fully opened: 3 Waveform 5
	Motor open	E159	14	0	0	When in operation: Waveform Waveform 5
	Motor closed	E159	30	0	0	When in operation: Waveform Waveform 5
Tumble generator valve actuator LH	Position signal	E158	41	3	3	Fully closed: 3 Fully opened: 1 Waveform 6
	Motor open	E159	6	0	0	When in operation: Waveform Waveform 6
	Motor closed	E159	22	0	0	When in operation: Waveform Waveform 6
Intake oil control solenoid	RH	E159	7	Battery voltage	0 or battery voltage	Drive frequency: 300 Hz Waveform 7
Intake oil control solenoid	LH	E159	15	Battery voltage	0 or battery voltage	Drive frequency: 300 Hz Waveform 7
Exhaust oil control solenoid	RH	E159	23	Battery voltage	0 or battery voltage	Drive frequency: 300 Hz Waveform 7
Exhaust oil control solenoid	LH	E159	31	Battery voltage	0 or battery voltage	Drive frequency: 300 Hz Waveform 7
Wastegate control solenoid valve		E159	11	Battery voltage	Battery voltage	When in operation: 0 or battery voltage
Purge control solenoid valve 1		E159	4	Battery voltage	Battery voltage	When in operation: 0 or battery voltage Waveform 9
Purge control solenoid valve 2		E159	12	Battery voltage	Battery voltage	When in operation: 0 or battery voltage Waveform 9
Ignition control	#1	E159	8	0	0 or 5	Waveform 10
	#2	E159	16	0	0 or 5	Waveform 10
	#3	E159	24	0	0 or 5	Waveform 10
	#4	E159	32	0	0 or 5	Waveform 10
EGR control valve	A (+)	E159	5	0 or battery voltage	0 or battery voltage	-
	A (-)	E159	21	0 or battery voltage	0 or battery voltage	-
	B (+)	E159	13	0 or battery voltage	0 or battery voltage	-
	B (-)	E159	29	0 or battery voltage	0 or battery voltage	-
Fuel pump control unit	Control signal	B134	40	ON: 0 or battery voltage OFF: 0	0 or battery voltage	Waveform 8
Fuel pump control unit	Diagnostic signal	B134	44	ON: Battery voltage OFF: 0	Battery voltage	-
High-pressure fuel pump	(Hi)	E158	10	-	-	Measurement prohibited
High-pressure fuel pump	(Lo)	E158	22	-	-	Measurement prohibited
Fuel injector	Power supply 1	B134	36	Battery voltage	Battery voltage	-
	Power supply 2	B134	48	Battery voltage	Battery voltage	-
	#1 (+)	E158	11	0	-	Measurement is prohibited while the engine is running.
	#1 (-)	E158	12	0	-	-
	#2 (+)	E158	23	0	-	-
	#2 (-)	E158	24	0	-	-
	#3 (+)	E158	35	0	-	-
	#3 (-)	E158	36	0	-	-
	#4 (+)	E158	47	0	-	-
	#4 (-)	E158	48	0	-	-
Electronic throttle control	Sensor power supply	E158	18	5	5	-
	Main signal	E158	17	Fully closed: Approx. 0.7 Fully open: Approx. 3.9	Fully closed: Approx. 0.7 Fully open: Approx. 3.9	-
	Sub signal	E158	29	Fully closed: Approx. 4.4 Fully open: Approx. 1.1	Fully closed: Approx. 4.4 Fully open: Approx. 1.1	-
	Ground	E158	30	0	0	-
	Motor (+)	E159	2	0	Duty waveform	Drive frequency: 10 kHz
	Motor (-)	E159	1	0	Duty waveform	Drive frequency: 10 kHz
Electronic throttle control motor power supply		B134	11	Battery voltage	Battery voltage	-
Electronic throttle relay control		B134	39	0	0	-
Starter relay control		B134	14	Model with push button start: 3 Models without push button start: 0	3	Cranking: Waveforms 11 and 12
Self-shutoff relay control		B134	38	1	1	-
Starter cut relay control		B134	13	0	0	Model with push button start Cranking: Waveform 11
Main fan relay control		B134	37	Battery voltage	Battery voltage	When in operation: 0 or battery voltage
Sub fan relay control		B134	25	Battery voltage	Battery voltage	When in operation: 0 or battery voltage
A/C relay control		B134	1	Battery voltage	Battery voltage	When in operation: 0 or battery voltage
Starter switch		B134	45	0	0	Model with push button start Cranking: Waveform 11
Starter switch 2		B134	8	0	0	Cranking: Battery voltage
Ignition switch		B134	32	Battery voltage	Battery voltage	-
Pressure switch		B134	7	Battery voltage	Battery voltage	-
Neutral position switch		B134	33	ON: 0 OFF: Battery voltage	ON: 0 OFF: Battery voltage	Switch is ON when select lever is in "P" range or "N" range.
Cruise control	Main switch	B134	20	ON: 0 OFF: 5	ON: 0 OFF: 5	Model without EyeSight
Cruise control	Command switch	B134	6	When operating nothing: 3.5 - 4.5 When operating RES/+: 2.5 - 3.5 When operating SET/-: 0.5 - 1.5 When operating CANCEL: 0 - 0.5	When operating nothing: 3.5 - 4.5 When operating RES/+: 2.5 - 3.5 When operating SET/-: 0.5 - 1.5 When operating CANCEL: 0 - 0.5	Model without EyeSight
Clutch switch		B134	34	When clutch pedal is depressed: 0 When clutch pedal is released: Battery voltage	When clutch pedal is depressed: 0 When clutch pedal is released: Battery voltage	MT model
Brake switch 1 (Brake switch)		B134	43	When brake pedal is depressed: 0 When brake pedal is released: Battery voltage	When brake pedal is depressed: 0 When brake pedal is released: Battery voltage	-
Brake switch 2 (Stop light switch)		E158	8	When brake pedal is depressed: Battery voltage When brake pedal is released: 0	When brake pedal is depressed: Battery voltage When brake pedal is released: 0	-
Oil level switch		E158	44	0	0	Oil level LOW: Battery voltage
Accessory cut request		B134	2	Battery voltage	Battery voltage	Model with push button start Cranking: 0 Waveform 11
Engine speed output		B134	4	Battery voltage	0 or battery voltage	Model with push button start Waveform 12
Generator control		B134	26	0 or 6.4	0 or 6.4	-
CAN communication	(Hi)	B134	10	-	-	-
CAN communication	(Lo)	B134	9	-	-	-
LIN communication		E158	3	-	-	-
Blow-by leak diagnosis		E158	7	0	0	At the time of open circuit (fault): 5
Immobilizer communication		E158	43	-	-	-
Delivery mode switch		E158	45	Battery voltage	Battery voltage	When the fuse is installed: 0
	Control module power supply	B134	12	Battery voltage	Battery voltage	-
	Control module power supply	B134	24	Battery voltage	Battery voltage	-
Back-up power supply		B134	23	Battery voltage	Battery voltage	-
	Sensor power supply	B134	18	5	5	-
	Sensor power supply	E159	19	5	5	-
Leak check valve assembly	Switching valve	B134	27	Battery voltage	Battery voltage	Operating: 0
	Pressure sensor	B134	15	1 - 4	1 - 4	When ignition switch is turned to ON: atmospheric pressure
	Vacuum pump	B134	3	Battery voltage	Battery voltage	Operating: 0
Brake booster pressure sensor		E158	13	1 - 2	1 - 2	When brake pedal is released.
Brake vacuum pump		E158	1	0	0	-
Brake vacuum pump relay		E158	37	Battery voltage	Battery voltage	-
	Sensor ground	B134	19	0	0	-
	Sensor ground	E159	27	0	0	-
Ground	Engine 1	B134	35	0	0	-
	Engine 2	B134	47	0	0	-
	Engine 3	E159	10	0	0	-
	Engine 4	E159	18	0	0	-
	Engine 5	E159	26	0	0	-
	Engine 6	E159	17	0	0	-
	Engine 7	E159	25	0	0	-

Measuring condition:

NOTE:

Perform measurement after warming up the engine.
For measurement of the waveform of the crankshaft position sensor, we recommend using the DST-i oscilloscope function or a general oscilloscope.

For CVT models, set the select lever to "P" range or "N" range position, and for MT models, place the gear shift lever in the neutral position.
Turn the A/C to OFF.
Turn all the accessory switches to OFF.

Waveforms vary depending on a measurement environment and vehicle condition.

Waveform 1

Courtesy of SUBARU OF AMERICA, INC.

Measured terminal	Crankshaft position sensor (+) signal (E158) No. 19 (+) - Engine ground 3 (E159) No. 10 (-):
	Intake camshaft position sensor RH (E158) No. 20 (+) - Engine ground 3 (E159) No. 10 (-):
	Intake camshaft position sensor LH (E158) No. 21 (+) - Engine ground 3 (E159) No. 10 (-):
	Exhaust camshaft position sensor RH (E158) No. 32 (+) - Engine ground 3 (E159) No. 10 (-):
	Exhaust camshaft position sensor LH (E158) No. 33 (+) - Engine ground 3 (E159) No. 10 (-):
Measuring condition	While engine idling

Waveform 2

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Measured terminal	Front oxygen (A/F) sensor IP (+) signal (E158) No. 15 (+) - Engine ground 3 (E159) No. 10 (-):
	Front oxygen (A/F) sensor VS (+) signal (E158) No. 27 (+) - Engine ground 3 (E159) No. 10 (-):
	Accelerator pedal position sensor main signal (B134) No. 17 (+) - Engine ground 3 (E159) No. 10 (-):
Measuring condition	(a) Accelerator pedal fully closed (b) Accelerator pedal half open (c) Accelerator pedal fully opened

Waveform 3

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Measured terminal	Rear oxygen sensor (+) signal (E158) No. 16 (+) - (E158) No. 42 (-):
Measured terminal	Accelerator pedal position sensor main signal (B134) No. 17 (+) - Engine ground 3 (E159) No. 10 (-):
Measuring condition	(a) Accelerator pedal fully closed (b) Accelerator pedal fully opened

Waveform 4

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Measured terminal	Front oxygen (A/F) sensor heater signal (E159) No. 9 (+) - Engine ground 3 (E159) No. 10 (-):
Measured terminal	Rear oxygen sensor heater signal (E159) No. 3 (+) - Engine ground 3 (E159) No. 10 (-):
Measuring condition	While engine idling (with the heater on)

Waveform 5

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Measured terminal	Tumble generator valve actuator RH motor open (E159) No. 14 (+) - Engine ground 3 (E159) No. 10 (-):
	Tumble generator valve actuator RH motor closed (E159) No. 30 (+) - Engine ground 3 (E159) No. 10 (-):
	Tumble generator valve actuator RH position signal (E158) No. 40 (+) - Engine ground 3 (E159) No. 10 (-):
	Accelerator pedal position sensor main signal (B134) No. 17 (+) - Engine ground 3 (E159) No. 10 (-):
Measuring condition	(a) Accelerator pedal fully closed (b) Accelerator pedal fully opened

Waveform 6

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Measured terminal	Tumble generator valve actuator LH motor open (E159) No. 6 (+) - Engine ground 3 (E159) No. 10 (-):
	Tumble generator valve actuator LH motor closed (E159) No. 22 (+) - Engine ground 3 (E159) No. 10 (-):
	Tumble generator valve actuator LH position signal (E158) No. 41 (+) - Engine ground 3 (E159) No. 10 (-):
	Accelerator pedal position sensor main signal (B134) No. 17 (+) - Engine ground 3 (E159) No. 10 (-):
Measuring condition	(a) Accelerator pedal fully closed (b) Accelerator pedal fully opened

Waveform 7

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Measured terminal	Intake oil control solenoid RH (E159) No. 7 (+) - Engine ground 3 (E159) No. 10 (-):
	Intake oil control solenoid LH (E159) No. 15 (+) - Engine ground 3 (E159) No. 10 (-):
	Exhaust oil control solenoid RH (E159) No. 23 (+) - Engine ground 3 (E159) No. 10 (-):
	Exhaust oil control solenoid LH (E159) No. 31 (+) - Engine ground 3 (E159) No. 10 (-):
Measuring condition	While engine idling

Waveform 8

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Measured terminal	Fuel pump control unit control signal (B134) No. 40 (+) - Engine ground 3 (E159) No. 10 (-):
Measuring condition	While engine idling

Waveform 9

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Measured terminal	Purge control solenoid valve 1 (E159) No. 4 (+) - Engine ground 3 (E159) No. 10 (-):
Measured terminal	Purge control solenoid valve 2 (E159) No. 12 (+) - Engine ground 3 (E159) No. 10 (-):
Measuring condition	During execution of active test using Subaru Select Monitor

Waveform 10

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Measured terminal	Crankshaft position sensor (+) signal (E158) No. 19 (+) - Engine ground 3 (E159) No. 10 (-):
	Ignition control #1 (E159) No. 8 (+) - Engine ground 3 (E159) No. 10 (-):
	Ignition control #2 (E159) No. 16 (+) - Engine ground 3 (E159) No. 10 (-):
	Ignition control #3 (E159) No. 24 (+) - Engine ground 3 (E159) No. 10 (-):
	Ignition control #4 (E159) No. 32 (+) - Engine ground 3 (E159) No. 10 (-):
Measuring condition	While engine idling

Waveform 11

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Measured terminal	Starter switch (B134) No. 45 (+) - Engine ground 3 (E159) No. 10 (-):
	Accessory cut request (B134) No. 2 (+) - Engine ground 3 (E159) No. 10 (-):
	Starter cut relay control (B134) No. 13 (+) - Engine ground 3 (E159) No. 10 (-):
	Starter relay control (B134) No. 14 (+) - Engine ground 3 (E159) No. 10 (-):
Measuring condition	When engine is started

Waveform 12

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Measured terminal	Starter relay control (B134) No. 14 (+) - Engine ground 3 (E159) No. 10 (-):
	Engine speed output (B134) No. 4 (+) - Engine ground 3 (E159) No. 10 (-):
	Battery voltage (battery terminal) (+) - Engine ground 3 (E159) No. 10 (-):
Measuring condition	When engine is started

Courtesy of SUBARU OF AMERICA, INC.

Courtesy of SUBARU OF AMERICA, INC.

Courtesy of SUBARU OF AMERICA, INC.

Courtesy of SUBARU OF AMERICA, INC.