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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Vehicle Speed Sensor: Description and Operation

The Vehicle Speed Sensor is a small signal generator that is turned by a gear inside the transaxle assembly. In this way, the Vehicle Speed Sensor produces a signal that is proportional to vehicle road speed.

The Vehicle Speed Sensor supplies a signal to all components that require vehicle speed information: the Speed Control Amplifier (on Speed Control-equipped vehicles), the 4EAT Control Module (on automatic transaxle-equipped vehicles).