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Instead of trying parts, try a scan tool to read live data. You need to know the throttle plate position.
One of the following conditions is met (1 trip detection logic):
The throttle position sensor opening angle when learning the fully-closed position is less than -4.02% or more than 4.02%.
When the throttle actuator current is off, the difference between the actual throttle position and the fully-closed position is less than 0.93%.
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