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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Throttle Position Sensor/Switch: Testing and Inspection

CHECKING TRANSAXLE CONTROL
COMPONENTS THROTTLE POSITION SENSOR CHECKING
The TPS is a variable resistor type that rotates with the throttle body shaft to sense the throttle valve angle. As the throttle shaft rotates, the output voltage of the TIPS changes. The ECM detects the throttle valve opening based on voltage change.