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Home >> Subaru >> 2018 >> Forester 2.5i Premium, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control/Fuel Injection System (H4DO) >> Fuel Pump Relay >> Inspection
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Fuel Pump Relay: Inspection

  1. Check that the fuel pump relay has no deformation, cracks or other damages.
  2. Measure the resistance between fuel pump relay terminals.
    G12505426Courtesy 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 fuel pump relay terminals.
    G12505427Courtesy of SUBARU OF AMERICA, INC.
    Terminal No. Standard
    1 and 2 Less than 1 Ω