Oxygen Sensor Heater
- Disconnect electrical connector from oxygen sensor. Using ohmmeter, measure resistance between sensor terminals +B and HT. See Fig 1.
- Replace oxygen sensor if resistance is not within specification. See OXYGEN SENSOR HEATER RESISTANCE SPECIFICATIONS table.
OXYGEN SENSOR HEATER RESISTANCE SPECIFICATIONS
| Application | Ohms |
|---|---|
| Previa | 5.1-6.3 @ 68°F (20°C) |