Signal Circuit Inspection

IG "OFF" & Disconnect HO2S(S2) connector.
IG "ON" & ENG "OFF".
Measure the voltage between signal terminal of HO2S(S2) harness connector and chassis ground.

Specification: Approx 0.45V

Is the measured voltage within specification?
YES
- Go to GROUND CIRCUIT INSPECTION procedure.
NO
- Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.