Component Inspection

■ Visual Check(HO2S(B2S2)) 

1. IG "OFF" and disconnect HO2S(B2S2) connector.
2. Check that HO2S(B2S2) is contaminated or damaged by foreign materials.

■ Check HO2S(B2S2) 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 HO2S 2 At Normal Condition

   Courtesy of KIA MOTORS AMERICA, INC.

■ Confirm Part Inspection 

1. Does the HO2S(B2S2) operate properly? (Check variation)

   YES 

   • Go to "Verification Of Vehicle Repair " procedure.

   NO 

   • Carefully re-do this troubleshooting guide steps.
   • If no problems were found with the circuits or connectors, replace the HO2S(B2S2) and go to "Verification Of Vehicle Repair " procedure.