Sub Heated Oxygen Sensor
INSPECTION1. Verify Data Trouble code 27.
- Cancel Diagnostic Trouble Code 27.
- Allow the engine to warm up to normal operating temperature.
- Drive for 5 minutes or more between 80 km/h (50 mph) and 100 km/h (62 mph) in "D" positon.
- Following the conditions in the above step, press fully on the accelerator pedal for 2 seconds or more.
NOTE: Do not exceed 100 km/h (62 mph), or the Diagnostic Trouble Code will be cancelled.
- Stop the vehicle, and turn the Ignition Switch to OFF.
- Carry out the above steps again to test acceleration.
- If code No. 27 reappears again, check the Sub Heated Oxygen Sensor circuit. If the circuit is normal, replace the Sub Heated Oxygen Sensor.
2. Disconnect cable from negative terminal of battery.
NOTE: Turn the Ignition Switch to "LOCK". Disconnect the cable from the negative (-) terminal from the battery. Wait 90 seconds before proceeding with work.
3. Disconnect Sub Heated Oxygen Sensor connector.
- Remove the scuff plate.
- Remove the instrument panel under cover.
- Take out the front side of the floor carpet.
4. Inspect heater resistance of Sub Heated Oxygen Sensor.
- Using an ohmmeter, measure the resistance between the terminals +B and HT.
Resistance: 11.7 - 14.30 at 20°C (68°F)
- If the resistance is not as specified, replace the sensor.
Torque: 44 Nm (33 ft lb)
5. Reconnect Sub Heated Oxygen Sensor connector
6. Reconnect cable to negative terminal of battery.