Check open in harness
WARNING: This page is about a different variant/trim than selected.
- IG "OFF". Disconnect HO2S (B2/S1) and ECM connector.
- Measure resistance between control terminal of HO2S (B2/S1) heater harness connector and heater control terminal of ECM harness connector.
Specification: Approx. below 1Ω
- Is the measured resistance within specification?
YES
- Go to "COMPONENT INSPECTION " procedure.
NO
- Repair open in HO2S (B2/S1) heater control circuit. Go to "VERIFICATION OF VEHICLE REPAIR " procedure.