Signal Circuit Inspection

■ Check voltage 

1. IG "OFF" and disconnect HO2S (B2/S1) connector.
2. IG "ON".
3. Measure voltage between signal terminal of HO2S (B2/S2) harness connector and chassis ground.

   Specification:  Approx. 0.8~1.2V

   Fig 1: Measuring Voltage Between Signal Terminal Of HO2S (B2/S2) Harness Connector And Chassis Ground

   Courtesy of HYUNDAI MOTOR AMERICA
4. Is the measured voltage within specification?

   YES 

   • Go to "Ground Circuit Inspection " procedure below.

   NO 

   • Repair open in harness, and go to "Verification of Vehicle Repair " procedure.