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

Clearing Diagnostic Trouble Codes


Selecting reset codes will result in the message "CLEAR ECM CODES?" or "CLEAR BCM CODES?" depending which system was being tested. At this point the following action may be taken:

1. Pressing the "OFF" button will stop the test selection process and return the display to the next available test type for the selected system.
2. Pressing the "LO" fan button will display the next test type available.
3. Pressing the "HI" fan button will select "CLEAR CODES". A message "ECM CODES CLEARED" or "BCM CODES CLEARED" will appear to indicate those codes have been cleared from memory.
4. Pressing "BI-LEV" will exit diagnostics.