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

Subaru Legacy BN/BS (2015-2019) Service Manual / Power assisted system (power steering) (diagnostics) / Control module i o signal / Electrical specification

NOTE:

The terminal numbers of the power steering control module connectors are as indicated in the figure.

Content	Connector No.	Terminal No.	Input/output signal
Content	Connector No.	Terminal No.	Measured value and measuring conditions
Power supply (IG SW)	B450	5	Battery voltage is detected with the ignition switch ON when measuring between (B450) No. 5 — (B452) No. 2.
Main torque sensor	B450	2	The voltage changes when the steering is operated to the right or left with the ignition switch ON.
Sub torque sensor	B450	1	The voltage changes when the steering is operated to the right or left with the ignition switch ON.
Torque sensor power supply	B450	6	Approximately 5 V is detected with ignition switch ON.
Torque sensor ground	B450	7	0 V is constantly detected.
CAN communication	B450	9	Digital signal; can not be measured
CAN communication	B450	10	Digital signal; can not be measured
Power supply	B452	1	Battery voltage is constantly detected when measuring between 1 — 2.
Ground	B452	2

Wiring diagram

Refer to “Electric Power Steering System” in the wiring diagram. Electric Power Steering System ...

Diagnostic procedure with diagnostic trouble code (dtc)

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Other materials:

Inspection
CAUTION:Be careful not to spill the brake fluid. Brake fluid spilled on the vehicle body will harm the paint surface; wash it off with water and wipe clean quickly if spilled.1. Park the vehicle on a level surface.2. Check the brake fluid level using the scale on the outside of the reservoir tank. I ...