Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

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", 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.