Subaru Legacy BN/BS (2015-2019) Service Manual: Electrical specification

Subaru Legacy BN/BS (2015-2019) Service Manual / Blind spot detection rear cross traffic alert (diagnostics) / Control module i o signal / Electrical specification

1. RADAR SENSOR

Terminal No.	Content		Measuring condition	Standard
Terminal No.	Radar sensor LH (master)	Radar sensor RH (slave)	Measuring condition	Standard
1 ←> Chassis ground	Private CAN H	Private CAN H	Always	1 M- or more
2 ←> Chassis ground	Master CAN H	—	Always	1 M- or more
3 ←> Chassis ground	—	—	—	—
4 ←> Chassis ground	Left mirror LED output	Right mirror LED output	• Ignition switch OFF > ON • BSD/RCTA OFF switch OFF > ON	• When indicator is ON: 2.5 — 10.5 V • When indicator is blinking: 0 ←> 2.5 — 10.5 V • When indicator is OFF: Less than 1 V
5 ←> Chassis ground	Ignition power supply	Ignition power supply	Ignition switch OFF > ON	Less than 1 V > 9 — 16 V
6 ←> Chassis ground	Private CAN L	Private CAN L	Always	1 M- or more
7 ←> Chassis ground	Master CAN L	—	Always	1 M- or more
8 ←> Chassis ground	BSD/RCTA OFF switch	—	• Ignition switch ON • BSD/RCTA OFF switch OFF > ON (while pressing and holding the switch)	Less than 1 V > 9 — 16 V
9 ←> Chassis ground	—	—	—	—
10 ←> Chassis ground	GND	GND	Always	Less than 1 -

System block diagram

• BSD/RCTA system is configured by the following components.• There is a control ECM in the radar sensor main body, which performs the vehicle identification and the alert judgment control ...

Wiring diagram

Refer to “BSD/RCTA System” in the wiring diagram. Blind Spot Detection/Rear Cross Traffic Alert > WIRING DIAGRAM ...

Other materials:

Inspection
Unit inspectionPreparation tool:Circuit tester1. Check the resistance between connector terminals.Terminal No.Inspection conditionsStandard1 — 2OPENLess than 5 -CLOSE1 M- or more2. If the inspection result is not within the standard, replace the button - opener rear gate. ...