Using the NGS Tester

1. Connect the SSTs (NGS tester) to the data link connector.
2. Select the "PID/DATA MONITOR AND RECORD" function on the NGS tester display and press TRIGGER.

Specification:

3. Select "O2S11", and "O2S12" on the NGS tester display and press START. The NGS tester measures and shows the voltage.

4. If not as specified, inspect the following.
- Intake-air system
- Fuel system
- On-board diagnostic system

5. If these systems are okay, replace the heated oxygen sensor.