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

Procedures to Run Quick Test:

- Transmission in park
- Emergency brake set
- Electrical accessories off (lights, A/C, defrost, etc) (If A/C is on, error code 67 will be set)
- Engine at operating temperature
- For more information refer to Engine/Emissions Diagnostic Shop Manual Section 14.

NOTE: SELF TEST CAN BE ENTERED ONLY ONCE EACH TIME THE KEY IS TURNED ON. TO REENTER SELF-TEST, TURN KEY OFF AND WAIT 10 SECONDS.