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 logical successor to CHARM, I recommend you try it!

Link: lemon-manuals.la

Scan Tool Testing and Procedures

NORMAL ENGINE OPERATING CONDITION

CARB mandated signal:





TOYOTA Enhanced Signals:






NOTE: The values given for "Normal Condition" are representative values, so a vehicle may still be normal even if its value differs from those listed here. So do not depend solely on the "Normal Condition" here when deciding whether the part is faulty or not.