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)

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Normal Scan Data Values

DATA LIST

Part 1:




Part 2:




Part 3:




Part 4:






HINT: According to the DATA LIST displayed by the OBD II scan tool or hand-held tester, you can read the value of the switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as a first step of troubleshooting is one of the method to shorten the labor time.

a. Warm up the engine.
b. Turn the ignition switch OFF.
c. Connect the OBD II scan tool or hand held tester to the DLC3.
d. Turn the ignition switch ON
e. According to the display on tester, read the "DATA LIST".