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Home >> Infiniti >> 1992 >> G20 Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Controls - System/Component Tests >> Engine Sensors & Switches >> Exhaust Gas Oxygen Sensor (G20 & M30)

Exhaust Gas Oxygen Sensor (G20 & M30)

  1. Disconnect oxygen sensor harness connector. Turn ignition on. Using DVOM, check voltage signal on center terminal of computer side of oxygen sensor harness. Voltmeter should indicate about one volt.
  2. If one volt is not present, check for open or short to ground in oxygen sensor harness White wire between oxygen sensor and terminal No. 19 (G20) or terminal No. 29 (M30) at ECU. Also see FEEDBACK SYSTEM under FUEL CONTROL  .
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