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
1. PCV VALVE1. Check that the PCV valve has no deformation, cracks or other damages.2. Check that air is discharged from (B) when air is blown into (A).3. Check that air does not come out from (B) when air is blown into (A).2. OTHER INSPECTIONSCheck that the PCV hose has no cracks, damage or loose p ...