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

Board Computer Code, Checking


^ switch ignition OFF
^ press and hold RESET button

^ while holding RESET button, switch ignition ON





^ a (symbol) and appropriate code displayed, see chart
^ illustration shows code "111", 6 cyl. MPI/172 bhp





Coding
connector Code
Part No. Engine Country displayed

6 cyl. MPI/ USA,
4AO 919 100 A 172 bhp Canada 111


If correct code is NOT displayed,
^ check coding connector A on instrument cluster for proper application
^ coding connector must be correct part number, see chart

If correct code is displayed,
^ switch ignition OFF
^ check country code