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

For Using OBD II Scan Tool or Hand-Held Tester

FOR USING OBD II SCAN TOOL OR HAND-HELD TESTER

CAUTION:
Observe the following items for safety reasons:
- Before using the hand-held tester or OBD II scan tool, the hand-held tester's operator manual or OBD II scan tool's instruction book should be read thoroughly.
- Be sure to route all cables securely when driving with the hand-held tester or OBD II scan tool connected to the vehicle. (I.e. keep cables away from feet, pedals, steering wheel and shift lever.)
- Two persons are required when test-driving with the hand-held tester or OBD II scan tool: one person to drive the vehicle and another to operate the hand-held tester or OBD II scan tool.