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)

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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.