Hereare the steps onhow to test TPS sensor. Find the throttle body. It will be the housing attached to the engine block. It will have the fuel line running from it. You will see a device connected to the throttle body that has wires running to the ECU. This is the throttle position sensor. Turnthe TRIP knob on the instrument cluster until you see the TIRE PRESSURE on the display. Press and hold the TRIP knob until the horn sounds twice. Start from the driver side front tire, place the TPMS Relearn Tool against the tire sidewall, near the valve stem. Then press the button to activate the TPMS sensor. Thistutorial will help you find out if there's an 'open' in the wiring between the throttle position sensor and the PCM (which could lead to a continuous TPS trouble code that won't go away). Before testing the continuity of the TPS circuits (wires), you need to first make sure that the TPS itself is OK. The TPS can be tested with a simple Tocheck the throttle position sensor on a 2015 Toyota Sienna, you will need to use a diagnostic scanner. Connect the scanner to the vehicle's on-board diagnostic port and follow the on-screen prompts to run a diagnostic test. The results of the diagnostic test will be able to tell you if the throttle position sensor is functioning properly. Thesole purpose of the throttle position sensor (TPS) is to report to the fuel injection computer how much the throttle plate opens/closes as you step on or step off the accelerator pedal. With this information, the fuel injection computer can maintain the engine running efficiently and optimally. LikeI said, the voltage readout is important and should be on or close enough to adjust with the throttle blade screw and/ or throttle cable adjustment fresh out of the box. You need to be sure that you in that voltage range at 0% throttle position both at idle or when the bike is idling at a complete stop. Thethrottle position sensor (TPS) detects the position of your throttle and sends this along to the car's computer. If the sensor's mechanical parts become worn, then bad data is submitted, causing the computer to make incorrect decisions and, in turn, leading to poor fuel economy and other issues, some of which could mimic problems with the fuel delivery system. TheTPS controls EVERYTHING that makes your 22RE idle properly, accelerate correctly and it is the main input to your ECU that controls your timing advance. This is ONE of the most important parts that needs proper testing/set-up to make your 22RE run right. I can't stress enough how important it is to have tested and adjusted this properly. oLSKqxj.