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Resistance Check (GS300 & SC300)

Oil Control Valve (OCV) is located on left front of cylinder head and has a Black 2-pin connector. Disconnect OCV connector. Measure resistance between OCV terminals. Resistance should be 5.5-12.0 ohms at 68°F (20°C). If resistance is not 5.5-12.0 ohms, replace OCV.

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