Note. For component location, see appropriate illustration in THEORY & OPERATION article.
Circuit Description
Throttle Position (TP) sensor is mounted to throttle body and it has 2 sensors to detect throttle opening angle. ECM determines current opening angle of throttle valve from signals input from terminals VTA1 and VTA2, and ECM control throttle motor to make throttle valve angle properly in response to driving condition.
Diagnostic Aids
Using scan tool, read FREEZE FRAME data. Freeze frame data records engine conditions when malfunction is detected.