LEMON Manuals: Even more car manuals for everyone
Home >> Subaru >> 2019 >> WRX Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Fuel Injection System (STI)) >> Oxygen Sensor Relay >> Inspection

Oxygen Sensor Relay: Inspection

WARNING: This page is about a different variant/trim than selected.
  1. Check that the oxygen sensor relay has no deformation, cracks or other damages.
  2. Measure the resistance between oxygen sensor relay terminals.
    G07909727Courtesy 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 oxygen sensor relay terminals.
G06344746Courtesy of SUBARU OF AMERICA, INC.
Terminal No. Standard
1 and 2 Less than 1 Ω
scientia non olet · About LEMON Manuals