Main Relay: Inspection

WARNING: This page is about a different car, the 2012 Subaru Outback and 2012 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.

Check that the main relay has no deformation, cracks or other damages.

Measure the resistance between main relay terminals.

Fig 1: Main Relay Circuit Diagram

Courtesy of SUBARU OF AMERICA, INC.

Terminal No.	Standard
1 and 2	1 MΩ or more
3 and 4	130.4 - 230.8 Ω (when 20°C (68°F))

Connect terminal No. 3 to battery positive terminal and terminal No. 4 to the battery ground terminal, and check the resistance between the main relay terminals.

Fig 2: Main Relay Circuit Diagram

Courtesy of SUBARU OF AMERICA, INC.

Terminal No.	Standard
1 and 2	Less than 1 Ω