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
Scan Tool Testing and Procedures
A Tech 1 scan tool mph display should closely match the speedometer reading with drive wheels turning. A fault in the
Vehicle Speed Sensor circuit should set a DTC 24 Vehicle Speed Sensor (VSS) Circuit.
Powertrain Controls - ECM/PCM