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Electrical Specification

Fig 1: Identifying B310 Connector Terminal
G05032712Courtesy of SUBARU OF AMERICA, INC.
NOTE:
  • Terminal numbers in VDCCM & H/U connector are shown in the figure.
  • When the connector is removed from VDCCM & H/U, the ABS warning light, EBD warning light, VDC warning light and TCS OFF indicator light illuminate.
INPUT/OUTPUT SIGNAL REFERENCE

Description Terminal No. (+) - (-) Input/Output signal
Measured value and measuring conditions
Power supply 1 - 43 10 - 15 V when the ignition switch is ON.
ABS wheel speed sensor Front LH wheel Power supply 27 - 43 8 - 15 V
Signal 41 5 - 17 mA: Rectangle waveform
Front RH wheel Power supply 42 - 43 8 - 15 V
Signal 28 5 - 17 mA: Rectangle waveform
Rear LH wheel Power supply 25 - 43 8 - 15 V
Signal 39 5 - 17 mA: Rectangle waveform
Rear RH wheel Power supply 26 - 43 8 - 15 V
Signal 40 5 - 17 mA: Rectangle waveform
Yaw rate & lateral G sensor 34 - 20 Serial communication
Steering angle sensor
CAN communication line (+) 34 Serial communication
CAN communication line (-) 20 Serial communication
Valve relay power supply 44 - 43 10 - 15 V always.
Motor power supply 45 - 46 10 - 15 V when the motor is ON.
ABS warning light 16 - 43 After turning the ignition switch to ON, 10 - 15 V during 1.5 seconds and less than 1.5 V after 1.5 seconds passed.
Brake warning light (EBD warning light) 3 - 43 After turning the ignition switch to ON, 10 - 15 V during 1.5 seconds and less than 1.5 V after 1.5 seconds passed.
Stop light switch 18 - 43 Less than 1.5 V when the stop light is OFF; otherwise, 10 - 15 V when the stop light is ON.
Subaru Select Monitor 32 - 43 0 ↔ 12 V pulse (in communication)
Vehicle speed output signal 33 Model without vehicle speed dependent wiper: 0 ↔ 5 V pulse Model with vehicle speed dependent wiper: 0 ↔ 12 V pulse
Ground 43 -
Relay box Relay power supply 2 - 43 10 - 15 V when the ignition switch is ON.
Motor relay drive 30 - 43 After turning the ignition switch to ON: 10 - 15 V, during the motor is operating: 1.5 V.
Fail safe relay drive 31 - 43 When the ignition switch is ON, less than 1.5 V.