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Oxygen Sensor Relay: Inspection

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  1. Check that the oxygen sensor relay has no deformation, cracks or other damages.
  2. Measure the resistance between oxygen sensor relay terminals.
    G07909727
    TERMINAL NO. STANDARD
    1 and 2 1 Ω 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.
    G06344746
    TERMINAL NO. STANDARD
    1 and 2 Less than 1 Ω
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