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)

Or, hide this message: temporarily or permanently

Throttle Position Sensor: Description and Operation






PURPOSE
The Throttle Position (TP) sensor measures throttle plate shaft position.

OPERATION
The TP sensor is a potentiometer mounted to the throttle body and engages on the throttle plate shaft. It provides a signal to the Powertrain Control Module (PCM) that is directly proportional to the throttle plate position.