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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Scan Tool Testing and Procedures

PID/Data Monitor and Record Procedure





1. Connect the WDS or equivalent to the vehicle DLC-2 connector.
2. Access and monitor PIDs using the WDS or equivalent.





PID/DATA Monitor Table

Data transmission from the wheel unit occurs when the vehicle speed is 25 km/h (15.5 mph) or more. Due to this, the current air pressure and temperature data can only be displayed after the vehicle is driven at 25 km/h (15.5 mph) or more. Also, the LAST-ID, and tire pressure and internal tire air temperature data are erased when the TPMS control unit connector and the battery terminal are disconnected. If the TPMS control unit is replaced or the battery terminals are disconnected, drive the vehicle at 25 km/h (15.5 mph) or more and display the tire pressure PID after the data transmission.