Operation CHARM: Car repair manuals for everyone.
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

Initial Programming of Engine Control Module (ECM)



Prerequisite for initial programming process:
- Battery voltage 11 Volt minimum
- Vehicle speed signal V = 0
- Engine rpm signal n = 0
- Transmission range P/N = 1
- Idle speed contact closed CTP = 1

Caution: Vehicle can not be moved during initial programming process.

- Drive vehicle V = > 5 km/h (3 mph)
Only then will the transmission version be recognized.