Main Relay: Inspection

2014 Subaru Outback 2.5i, Standard TransSECTION Inspection
  1. Check that the main relay has no deformation, cracks or other damages.
  2. Measure the resistance between main relay terminals.
    Fig 1: Measuring Resistance Between Main Relay Terminals
    G08315468Courtesy 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))
  3. Connect battery positive terminal to terminal No. 3 and battery ground terminal to terminal No. 4, and measure the resistance between the main relay terminals.
    Fig 2: Measuring Resistance Between Main Relay Terminals 1 And 2
    G08315469Courtesy of SUBARU OF AMERICA, INC.
    Terminal No. Standard
    1 and 2 Less than 1 Ω
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.