Manuals through 2025 now available!
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LEMON is the spiritual successor to CHARM, I recommend you try it!
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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.