Parts for your 2011 Toyota Vitz|yaris-Throttle position sensors

2011 Toyota Vitz/Yaris Throttle Position Sensor (TPS)

Technical sources confirm the 2011 Toyota Vitz/Yaris uses a throttle position sensor. Toyota’s New Car Features (ETCS‑i), the 2011 Vitz/Yaris Repair Manual, and the Electrical Wiring Diagram show a throttle body with motor that contains dual throttle position sensors (often labelled VTA and VTA2) feeding the ECM. OBD‑II diagnostics for this model also include TPS‑related DTCs such as P0120–P0124 and P2135. On this generation, the TPS is integrated into the electronic throttle body and is not serviced separately from the assembly.

On the 2011 Vitz/Yaris, the TPS tells the engine computer exactly how far the throttle plate is open. Paired with the electronic throttle motor and the accelerator pedal sensors, it helps the car deliver smooth take‑off, tidy fuel economy, stable idle, and the right response when overtaking. It also weighs in on cruise control, traction/stability systems, and automatic transmission shift timing where fitted. Toyota builds redundancy into the system with two matching sensor signals so the ECM can cross‑check and throw a wobbly (limp mode) if they don’t agree.

There’s no scheduled replacement for a TPS on this model, it’s a “monitor and maintain” item. During routine servicing, a smart workshop will:

• Scan for stored TPS‑related fault codes (P0120–P0124, P2135) and check live data for smooth, matching VTA/VTA2 readings.
• Inspect the throttle body connector and loom for moisture or chafing, especially if the car sees a lot of wet commutes.
• Clean the throttle bore and plate carefully with throttle‑body safe cleaner. Don’t force the plate by hand and don’t flood the sensor area.

Common signs the TPS/throttle body needs attention include erratic idle, stalling at lights, flat spots, surging, poor fuel use, or the check‑engine light with the codes above. Because the TPS is integrated, Toyota specifies replacing the throttle body assembly if the sensor is out of range or has dead spots—there’s no adjustment screw or separate sensor swap. Fit a new gasket, torque the bolts to spec, reconnect the coolant hoses if applicable, and perform an idle/throttle relearn. With a scan tool (Techstream or equivalent), clear codes and verify that closed‑throttle and wide‑open readings track cleanly, without a tool, a short drive cycle from cold to full operating temp will usually complete the relearn.

Look after the throttle body, keep connections clean and dry, and the Vitz/Yaris will keep its throttle response crisp for many more kays.

Popular questions

Where is the TPS on a 2011 Vitz/Yaris?
It’s built into the electronic throttle body on the intake manifold. You’ll see an electrical connector on the throttle body housing, that’s where the dual TPS signals head back to the ECM. There isn’t a separate stand‑alone sensor to unbolt on this model.

Do I need to calibrate the TPS after cleaning or replacement?
After cleaning, usually not—just avoid forcing the plate and let the ECM relearn during a normal drive. After replacing the throttle body, it’s best practice to reset learned values with a scan tool and perform an idle/throttle relearn so the ECM maps the new sensor’s exact closed and open positions.

What symptoms point to a failing TPS on this car?
Owners typically notice a rough or hunting idle, hesitation off the line, sudden loss of power with the car dropping into limp mode, or the check‑engine light. Scan results often show TPS correlation faults (like P2135) or circuit range/performance codes (P0120 series).