Parts for your 2010 Toyota Blade-Throttle position sensors

2010 Toyota Blade throttle position sensors (TPS)

Based on Toyota technical literature for the E150-series Blade (covering the 2AZ-FE 2.4L and 2GR-FE 3.5L engines), the 2010 Toyota Blade does use throttle position sensors. In Toyota’s ETCS‑i system, the TPS is integrated into the electronic throttle body as dual sensors (often referenced in wiring diagrams as VTA1/VTA2). This is documented in Toyota repair manuals and EWDs, and supported by the presence of TPS‑related DTCs (e.g., P0120–P0124, P2135) listed for these engines. It’s not a separate, bolt‑on sensor like older cable throttles, it’s built into the throttle body assembly alongside the throttle control motor.

On the 2010 Blade, the TPS tells the ECU exactly how far the throttle plate is open so fuel and ignition can be trimmed for smooth driveability, good economy, and low emissions. The setup uses two sensor tracks for redundancy, the ECU constantly compares them for safety. There’s also an accelerator pedal position (APP) sensor at the pedal — that’s a different part, feeding the driver’s request, while the TPS reports the actual throttle plate angle.

During servicing, the TPS isn’t treated as a separate maintenance item. If it goes out of spec or the two tracks disagree, you’ll usually see a check engine light and limp mode. Because the TPS is part of the throttle body on these engines, the typical fix is to replace the complete throttle body assembly. After replacement, an idle learn/ETCS reset procedure with a scan tool is recommended so the ECU can relearn the new throttle plate position.

Good preventative care focuses on keeping the throttle body clean and the electrical connectors healthy. With the battery disconnected, remove the intake duct and gently clean the throttle bore and plate using throttle‑body‑safe cleaner and a lint‑free cloth. Don’t force the plate open by hand — use light pressure only. Refit with a new gasket if required, torque the fasteners to spec, reconnect the battery, then perform an idle relearn (let it idle with all loads off, then take a short drive so it can adapt). A scan tool that can monitor VTA1/VTA2 is handy to confirm smooth, matching signals as you blip the throttle.

• Common signs of TPS/throttle body trouble: erratic idle, poor throttle response, sudden limp mode, rising fuel use, and DTCs P0120–P0124 or P2135.
• If diagnosing at home, check for vacuum leaks and wiring issues before condemning the throttle body.
• Use quality parts, the integrated sensor design means cheap throttle bodies can cause ongoing dramas.

FAQs

Does a 2010 Toyota Blade actually have a throttle position sensor?
Yes. The Blade uses electronic throttle control, and the TPS is built into the throttle body as a pair of sensors the ECU cross‑checks. It’s different from the accelerator pedal sensor, which reads pedal movement.

Can the TPS be replaced on its own?
On these engines, no — the TPS isn’t a separate service part. If the TPS fails or the signals don’t correlate, the fix is typically replacing the complete throttle body, then performing an idle/ETCS relearn with a scan tool.

What maintenance helps the TPS last?
Keep the throttle body clean, avoid forcing the plate by hand, inspect wiring and plugs for corrosion, and run a proper relearn after cleaning or battery disconnects. Using a scan tool to verify smooth VTA1/VTA2 traces is a smart check during servicing.