LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2021 >> WRX Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 40 (Power Steering System (Diagnostics)) >> Control Module I/O Signal >> Electrical Specification
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Electrical Specification

WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.
G14614791Courtesy of SUBARU OF AMERICA, INC.
Connector No. Terminal No. Contents Measuring condition Standard
B76 1 Ground Always
Measurement between (B76) No. 1 - (B76) No. 2
10 - 16 V
B76 2 Battery power supply
B77 1 Ignition power supply Ignition switch: ON
Measurement between (B77) No. 1 - (B76) No. 1
9 - 16 V
B77 2 Advanced safety CAN_H signal Digital signal; cannot be measured -
B77 3 Advanced safety CAN_L signal Digital signal; cannot be measured -
B77 5 Chassis CAN_L signal Digital signal; cannot be measured -
B77 6 Chassis CAN_H signal Digital signal; cannot be measured -