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

Key On Engine Running Self Test

1. Connect tester to vehicle self test connector.
2. Position select switch to EEC-IV system.
3. Select fast code mode or slow code mode.
4. Turn tester power On.
5. Turn vehicle ignition On.
6. Run engine until normal operating temperature is obtained.
7. Turn engine Off.
8. Start engine, then depress test button on tester to test position.
9. Read engine I.D. codes, then on some models a dynamic response code, then the service codes.