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.







3. Select "O2S11","O2S21","O2S12"and"O2S13" 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.