Signal Circuit Inspection

■ Check voltage 

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

   Specification:  Approx. 0.6~0.9V

4. Is the measured voltage within specification?

   YES 

   • Go to "GROUND CIRCUIT INSPECTION " procedure.

   NO 

   • Repair open in harness, and go to "VERIFICATION OF VEHICLE REPAIR " procedure.