Oxygen Sensor Heater
- Disconnect electrical connector from oxygen sensor and note oxygen sensor terminals. See Fig 1.
- Using ohmmeter, measure resistance between oxygen sensor terminals +B and HT. See Fig 1. Replace oxygen sensor if resistance is not within specification. See the OXYGEN SENSOR HEATER RESISTANCE SPECIFICATIONS table.
OXYGEN SENSOR HEATER RESISTANCE SPECIFICATIONS
| Application | Ohms @ 68°F (20°C) |
|---|---|
| Tercel | 11-16 |