2019 Subaru Crosstrek Base, Automatic CVT TransFACTORY OEM SERVICE PROCEDURE

Electrical Specification

G11257253Courtesy of SUBARU OF AMERICA, INC.
  Description Connect or No. Terminal No. Signal (V) Note
Ignition SW ON After warm-up (at engine OFF) Engine ON After warm-up (at idle)
Crankshaft position sensor Signal E158 66 5 0 or 5 Waveforms 1 and 8
Power supply E158 40 5 5 -
Ground E158 53 0 0 -
Intake camshaft position sensor RH E158 78 0 or 5 0 or 5 Waveform 1
LH E158 77 0 or 5 0 or 5 Waveform 1
Exhaust camshaft position sensor RH E158 65 0 or 5 0 or 5 Waveform 1
LH E158 64 0 or 5 0 or 5 Waveform 1
Camshaft position sensor ground E158 51 0 0 -
Front oxygen (+) signal E158 60 2.8 - 3.2 2.8 - 3.2 Waveform 2
(-) signal E158 73 1.3 - 3.1 2.4 - 2.7 Waveform 2
Rear oxygen sensor Heater signal E158 88 Battery voltage 0 or battery voltage Waveform 4
Shield E158 47 0 0 -
(+) signal B134 33 2.7 - 3 Waveform Waveform 3
(-) signal B134 44 1.9 - 2 Waveform Waveform 3
Heater signal B134 22 Battery voltage 0 or battery voltage Waveform 4
Air flow sensor signal B134 32 0 or 5 0 or 5 -
Intake air temperature sensor signal B134 43 0.3 - 4.6 0.3 - 4.6 -
Engine coolant temperature sensor signal E158 45 1 - 1.4 1 - 1.4 -
Engine oil temperature sensor signal E158 46 1 - 1.4 1 - 1.4 -
Manifold absolute pressure sensor signal E158 69 3.5 - 4.8 1.4 - 2.1 -
Knock sensor 1 Signal E158 4 2.4 - 2.6 2.1 - 2.8 -
Ground E158 17 0 0 -
Knock sensor 2 Signal E158 5 2.4 - 2.6 2.4 -
Ground E158 18 0 0 -
Knock sensor shield E158 16 0 0 -
Accelerator pedal position sensor Main signal B134 66 Fully closed: 0.3 - 1.1
Fully open: 2.3 - 3.8		 Fully closed: 0.3 - 1.4
Fully open: 2.4 - 3.8		 Waveforms 2, 3, 5 and 6
Main power supply B134 51 5 5 -
Main ground B134 55 0 0 -
Sub signal B134 64 Fully closed: 0.3 - 1.1
Fully open: 2.3 - 3.8		 Fully closed: 0.3 - 1.4
Fully open: 2.3 - 3.8		 -
Sub power supply B134 52 5 5 -
Sub ground B134 65 0 0 -
Tumble generator valve RH Position signal E158 28 Waveform Waveform Waveform 5
Motor open E158 102 Waveform Waveform Waveform 5
Motor closed E158 111 Waveform Waveform Waveform 5
Tumble generator valve LH Position signal E158 42 Waveform Waveform Waveform 6
Motor open E158 101 Waveform Waveform Waveform 6
Motor closed E158 110 Waveform Waveform Waveform 6
Intake oil control solenoid RH E158 99 Battery voltage 0 or battery voltage Waveform 7
LH E158 100 Battery voltage 0 or battery voltage Waveform 7
Exhaust oil control solenoid RH E158 108 Battery voltage 0 or battery voltage Waveform 7
LH E158 109 Battery voltage 0 or battery voltage Waveform 7
Purge control solenoid valve E158 9 Battery voltage Battery voltage Operating: 0
Leak check valve assembly Switching valve B134 11 Battery voltage Battery voltage Operating: 0
Pressure sensor B134 61 1 - 4 1 - 4 When ignition switch is turned to ON: atmospheric pressure
Vacuum pump B134 10 Battery voltage Battery voltage Operating: 0
Ignition coil #1 E158 10 0 0 or 5 Waveform 8
#2 E158 11 0 0 or 5 Waveform 8
#3 E158 12 0 0 or 5 Waveform 8
#4 E158 13 0 0 or 5 Waveform 8
Fuel pressure sensor Signal 1 E158 56 1 - 1.6 1 -
Signal 2 E158 50 3 - 3.6 3 - 3.6 -
High-pressure fuel pump (+) signal E158 105 - - -
(-) signal E158 114 - - -
Fuel injector #1 (+) E158 87 2 - 3 - Measurement is prohibited while the engine is running.
#1 (-) E158 96 2 - 3 -
#2 (+) E158 86 2 - 3 -
#2 (-) E158 95 2 - 3 -
#3 (+) E158 84 2 - 3 -
#3 (-) E158 93 2 - 3 -
#4 (+) E158 85 2 - 3 -
#4 (-) E158 94 2 - 3 -
EGR control valve Signal 1 E158 98 0 or battery voltage 0 or battery voltage -
Signal 2 E158 97 0 or battery voltage 0 or battery voltage -
Signal 3 E158 107 0 or battery voltage 0 or battery voltage -
Signal 4 E158 106 0 or battery voltage 0 or battery voltage -
Electronic throttle control sensor Main signal E158 29 Approx. 0.7 Approx. 0.6 - 1.2 Fully closed: Approx. 0.6 - 1.2
Fully open: Approx. 3.8 - 4.4
Sub signal E158 43 Approx. 1.6 Approx. 1.5 - 1.7 Fully closed: Approx. 1.4 - 2.0
Fully open: Approx. 4.0 - 4.6
Shield E158 44 0 0 -
Motor (+) E158 83 0 or battery voltage 0 or battery voltage Drive frequency: 500 Hz
Motor (-) E158 92 0 or battery voltage 0 or battery voltage Drive frequency: 500 Hz
Power supply E158 27 5 5 -
Ground E158 30 0 0 -
A/C relay control B134 18 ON: 0.5 V or less
OFF: Battery voltage		 ON: 0.5 V or less
OFF: Battery voltage		 Manual A/C model
A/C switch B134 47 ON: Battery voltage
OFF: 0		 ON: Battery voltage
OFF: 0		 Manual A/C model
Blower fan switch B134 48 ON: 0
OFF: Battery voltage		 ON: 0
OFF: Battery voltage		 Manual A/C model
A/C middle pressure switch B134 49 ON: 0
OFF: Battery voltage		 ON: 0
OFF: Battery voltage		 Manual A/C model
Self-shutoff relay control B134 12 0 0 -
Starter relay control B134 2 Waveform Waveform Model without push button start Waveform 9 Model with push button start Waveform 11
Starter cut relay control B134 24 Waveform Waveform Model without push button start Waveform 9 Model with push button start Waveforms 10 and 11
Fuel pump relay control B134 31 0 or battery voltage 0 ON: 0
OFF: Battery voltage
Main fan relay control B134 30 Battery voltage Battery voltage ON: 0
Sub fan relay control B134 19 Battery voltage Battery voltage ON: 0
Ignition switch B134 56 Battery voltage Battery voltage Waveform 11
Neutral position switch B134 39 ON: 0
OFF: Battery voltage		 0 -
Delivery mode switch B134 57 Battery voltage Battery voltage When fuse is installed: 0
Oil level switch E158 57 0 0 Oil level LOW: Battery voltage
Starter switch B134 25 Waveform Waveform Model without push button start Waveform 9
Model with push button start Waveform 10
Starter switch 2 B134 27 Waveform Waveform Model without push button start Waveform 9
Model with push button start Waveform 10
Accessory cut request B134 34 Waveform Waveform Model with push button start Waveform 10
Engine speed output B134 17 Waveform Waveform Model with push button start Waveform 11
Clutch start switch B134 37 When clutch pedal is depressed: Battery voltage
When clutch pedal is released: 0		 When clutch pedal is depressed: Battery voltage When clutch pedal is released: 0 MT model (with push button start)
Clutch switch B134 28 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 36 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) B134 38 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		 -
Cruise control main switch B134 35 ON: 0
OFF: 5		 ON: 0
OFF: 5		 Model without EyeSight
Cruise control command switch B134 62 When operating nothing: 3.5 - 4.5
When operating RES/ACC: 2.5 - 3.5
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 SET/COAST: 0.5 - 1.5
When operating CANCEL: 0 - 0.5		 Model without EyeSight
LIN communication B134 5 - - -
Immobilizer communication B134 6 - - -
CAN communication HI B134 3 - - -
LO B134 14 - - -
  Control module power supply B134 67 Battery voltage Battery voltage -
B134 68 Battery voltage Battery voltage -
Backup power supply B134 1 Battery voltage Battery voltage Ignition switch OFF: Battery voltage
  Sensor power supply B134 53 5 5 -
E158 41 5 5 -
Ground Body B134 50 0 0 -
Sensor B134 54 0 0 -
E158 54 0 0 -
Engine 1 B134 71 0 0 -
Engine 2 B134 72 0 0 -
Engine 3 B134 69 0 0 -
Engine 4 B134 70 0 0 -
NOTE:
  • After engine is warmed up, attach the check board for measurement.
  • Set the select lever in "P" range or "N" range, or the shift lever in neutral.
  • Turn the A/C to OFF.
  • Turn all the accessory switches to OFF.
  • Waveforms vary depending on a measurement environment and vehicle condition.
  • Oscilloscope waveform illustrated here is an example for reference. Noise and chattering in waveform are omitted.
  1. Waveform 1
    G11257254Courtesy of SUBARU OF AMERICA, INC.
    Measured terminal Crankshaft position sensor signal (E158) No. 66 (+) - Engine ground 3 (B134) No. 69 (-):
    Intake camshaft position sensor RH (E158) No. 78 (+) - Engine ground 3 (B134) No. 69 (-):
    Intake camshaft position sensor LH (E158) No. 77 (+) - Engine ground 3 (B134) No. 69 (-):
    Exhaust camshaft position sensor RH (E158) No. 65 (+) - Engine ground 3 (B134) No. 69 (-):
    Exhaust camshaft position sensor LH (E158) No. 64 (+) - Engine ground 3 (B134) No. 69 (-):
    Measuring condition While engine idling
  2. Waveform 2
    G11257255Courtesy of SUBARU OF AMERICA, INC.
    Measured terminal Front oxygen (A/F) sensor (+) signal (E158) No. 60 (+) - Engine ground 3 (B134) No. 69 (-):
    Front oxygen (A/F) sensor (-) signal (E158) No. 73 (-) - Engine ground 3 (B134) No. 69 (-):
    Accelerator pedal position sensor main signal (B134) No. 66 (+) - Engine ground 3 (B134) No. 69 (-):
    Measuring condition (a) accelerator pedal fully closed (b) accelerator pedal half open (c) accelerator pedal fully opened
  3. Waveform 3 Crosstrek
    G12399894Courtesy of SUBARU OF AMERICA, INC.

    Except for Crosstrek

    G11257256Courtesy of SUBARU OF AMERICA, INC.
    Measured terminal Rear oxygen sensor (+) signal (B134) No. 33 (+) - Rear oxygen sensor (-) signal (B134) No. 44 (-):
    Accelerator pedal position sensor main signal (B134) No. 66 (+) - Engine ground 3 (B134) No. 69 (-):
    Measuring condition (a) Accelerator pedal fully closed (b) Accelerator pedal fully opened
  4. Waveform 4
    G11257257Courtesy of SUBARU OF AMERICA, INC.
    Measured terminal Front oxygen (A/F) sensor heater signal (E158) No. 88 (+) - Engine ground 3 (B134) No. 69 (-):
    Rear oxygen sensor heater signal (B134) No. 22 (+) - Engine ground 3 (B134) No. 69 (-):
    Measuring condition While engine idling
  5. Waveform 5
    G11257258Courtesy of SUBARU OF AMERICA, INC.
    Measured terminal Tumble generator valve RH position signal (E158) No. 28 (+) - Engine ground 3 (B134) No. 69 (-):
    Tumble generator valve RH motor open (E158) No. 102 (+) - Engine ground 3 (B134) No. 69 (-):
    Tumble generator valve RH motor closed (E158) No. 111 (+) - Engine ground 3 (B134) No. 69 (-):
    Accelerator pedal position sensor main signal (B134) No. 66 (+) - Engine ground 3 (B134) No. 69 (-):
    Measuring condition (a) Accelerator pedal fully closed (b) Accelerator pedal fully opened
  6. Waveform 6
    G11257259Courtesy of SUBARU OF AMERICA, INC.
    Measured terminal Tumble generator valve LH position signal (E158) No. 42 (+) - Engine ground 3 (B134) No. 69 (-):
    Tumble generator valve LH motor open (E158) No. 101 (+) - Engine ground 3 (B134) No. 69 (-):
    Tumble generator valve LH motor closed (E158) No. 110 (+) - Engine ground 3 (B134) No. 69 (-):
    Accelerator pedal position sensor main signal (B134) No. 66 (+) - Engine ground 3 (B134) No. 69 (-):
    Measuring condition (a) Accelerator pedal fully closed (b) Accelerator pedal fully opened
  7. Waveform 7
    G11257260Courtesy of SUBARU OF AMERICA, INC.
    Measured terminal Intake oil control solenoid RH (E158) No. 99 (+) - Engine ground 3 (B134) No. 69 (-):
    Intake oil control solenoid LH (E158) No. 100 (+) - Engine ground 3 (B134) No. 69 (-):
    Exhaust oil control solenoid RH (E158) No. 108 (+) - Engine ground 3 (B134) No. 69 (-):
    Exhaust oil control solenoid LH (E158) No. 109 (+) - Engine ground 3 (B134) No. 69 (-):
    Measuring condition While engine idling
  8. Waveform 8
    G11257261Courtesy of SUBARU OF AMERICA, INC.
    Measured terminal Crankshaft position sensor signal (E158) No. 66 (+) - Engine ground 3 (B134) No. 69 (-):
    Ignition control #1 (E158) No. 10 (+) - Engine ground 3 (B134) No. 69 (-):
    Ignition control #2 (E158) No. 11 (+) - Engine ground 3 (B134) No. 69 (-):
    Ignition control #3 (E158) No. 12 (+) - Engine ground 3 (B134) No. 69 (-):
    Ignition control #4 (E158) No. 13 (+) - Engine ground 3 (B134) No. 69 (-):
    Measuring condition While engine idling
  9. Waveform 9
    G12399901Courtesy of SUBARU OF AMERICA, INC.
    Measured terminal Starter switch (B134) No. 25 (+) - Engine ground 3 (B134) No. 69 (-):
    Starter switch 2 (B134) No. 27 (+) - Engine ground 3 (B134) No. 69 (-):
    Starter cut relay control (B134) No. 24 (+) - Engine ground 3 (B134) No. 69 (-):
    Starter relay control (B134) No. 2 (+) - Engine ground 3 (B134) No. 69 (-):
    Measuring condition When engine is started
  10. Waveform 10
    G12399902Courtesy of SUBARU OF AMERICA, INC.
    Measured terminal Starter switch (B134) No. 25 (+) - Engine ground 3 (B134) No. 69 (-):
    Starter switch 2 (B134) No. 27 (+) - Engine ground 3 (B134) No. 69 (-):
    Accessory cut request (B134) No. 34 (+) - Engine ground 3 (B134) No. 69 (-):
    Starter cut relay control (B134) No. 24 (+) - Engine ground 3 (B134) No. 69 (-):
    Measuring condition When engine is started
  11. Waveform 11
    G12399903Courtesy of SUBARU OF AMERICA, INC.
    Measured terminal Starter cut relay control (B134) No. 24 (+) - Engine ground 3 (B134) No. 69 (-):
    Starter relay control (B134) No. 2 (+) - Engine ground 3 (B134) No. 69 (-):
    Engine speed output (B134) No. 17 (+) - Engine ground 3 (B134) No. 69 (-):
    Ignition switch (B134) No. 56 (+) - Engine ground 3 (B134) No. 69 (-):
    Measuring condition When engine is started
    G12399905Courtesy of SUBARU OF AMERICA, INC.
    G13238572Courtesy of SUBARU OF AMERICA, INC.
    G12399907Courtesy of SUBARU OF AMERICA, INC.
    G12399908Courtesy of SUBARU OF AMERICA, INC.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.