Signal Circuit Inspection
- IG "OFF" & Disconnect HO2S (B2/S1) connector.
- Disconnect HO2S (B2/S1) connector and ECM connector.
- Measure the resistance between signal terminal of HO2S (B2/S1) harness connector and HO2S (B2/S1) signal terminal of ECM harness connector.
Specification: below 1Ω
- Is the measured resistance within specification?
YES
- Go to "GROUND CIRCUIT INSPECTION " procedure.
NO
- Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.