Power Circuit Inspection
WARNING: This page is about a different variant/trim than selected.
- Turn "OFF" the ignition switch.
- Disconnect HO2S connector.
- Turn "ON" the ignition switch.
- Measure voltage between Heater Power terminal of the HO2S harness connector and chassis ground.
Specification: Battery voltage
- Is voltage within specification?
YES
- Go to "CONTROL CIRCUIT INSPECTION " procedure.
NO
- Check for an open in the power supply circuit between the main relay and the HO2S. Especially check for "15A Sensor 2 fuse" is installed and not blown. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NOTE:
HO2S must have a clean air reference to function properly. The air is obtained by way of the sensor wire(s). Do not attempt to repair the wire(s), connector, or the terminals.