Visual Check(HO2S(B2S1))

1. IG "OFF" and disconnect HO2S(B2S1) connector.
2. Check that HO2S(B2S1) is contaminated or damaged by foreign materials.

■ Check HO2S(B2S1) performance 

1. Warm up the engine to normal operating temperature.
2. Connect VMI to GDS and select "Oscilloscope".
3. Connect Channel A positive probe to Pin No. 1 (high) and Channel A negative probe to Pin No. 2 (low).

   Specification:  Refer to Fig 1

   Fig 1: Screen Display - Signal Waveform Of HO2S1 At Normal Condition

   Courtesy of KIA MOTORS AMERICA, INC.