Sensor Inspection

1. Engine starts and check signals of front and rear HO2S. (Refer to "SIGNAL WAVEFORM ")
2. Measure resistance between the terminals 3 and 4 of front and rear HO2S connectors.

Specification : 3.3 ~ 4.1 Ω at 20°C (68°F)

Fig 1: Measuring Resistance Between Terminals 3 And 4 Of Front And Rear HO2S Connectors

Courtesy of HYUNDAI MOTOR CO.