Oxygen Sensor: Testing and Inspection

1. Connect the SST to the DLC-2.




2. Select the PID/DATA MONITOR AND RECORD function of NGS.

Specification:

3. Select "FHO2S R", "FHO2S L", "MHO2S" and "RHO2S" on the NGS display. NGS measures and shows the voltage.
- If these systems are okay, replace the HO2S.
- If not as specified, inspect following.
- intake-air system
- Fuel system
- OBD system

Tightening torque: 30 - 49 Nm {3.0 - 5.0 kg.m, 22 - 36 ft.lb}

Heater
1. Disconnect the HO2S connector.




2. Measure the resistance between HO2S terminals D and C using an ohmmeter.
- If not as specified, replace the HO2S.

Specification: Approx. 6 Ohms [20 °C {68 °F}]

Tightening torque: 30 - 49 N.m {3.0 - 5.0 kg.m, 22 - 36 ft.lb}