Oxygen Sensor Heater
NOTE:
Oxygen sensor heater may be used only on California applications on some models. See OXYGEN SENSOR APPLICATION table.
- Disconnect electrical connector from oxygen sensor. Using ohmmeter, measure resistance between oxygen 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 @ 68°F (20°C) |
|---|---|
| Land Cruiser | 5.0-6.5 |