Parts for your 2009 Toyota Blade-Throttle position sensors

2009 Toyota Blade throttle position sensor: what it does and how to look after it

For the 2009 Toyota Blade (E150 platform, 2AZ‑FE 2.4 or 2GR‑FE 3.5), a throttle position sensor is absolutely used. Toyota’s Electronic Throttle Control System – intelligent (ETCS‑i) integrates the TPS within the electronic throttle body, while a separate accelerator pedal position sensor sits on the pedal. This setup is documented in Toyota repair literature for the E150 series (SFI and ETCS‑i sections in the Repair Manual and EWD) and mirrored in DENSO electronic throttle body technical data. The diagnostic charts list TPS-related DTCs (e.g., P0120–P0124, P0220–P0223), confirming the sensor’s role on this model.

On this Blade, the throttle position sensor reports the angle of the throttle plate to the engine ECU so it can manage air intake, fueling, ignition timing, and idle speed. Because the car is throttle‑by‑wire, the ECU uses both the pedal sensor and the TPS to cross‑check demand versus actual throttle opening. That’s how it keeps response smooth and protects the engine and drivetrain.

When the TPS starts playing up, the Blade can show:

• Hunting or high/low idle
• Limp mode, sluggish acceleration, or poor fuel economy
• Check Engine Light with TPS‑related fault codes

Servicing tips for the 2009 Blade’s TPS are a bit different to old cable throttles. The TPS is built into the throttle body, so replacement usually means swapping the complete throttle body assembly. It’s worth confirming fault codes and live data first: with a scan tool, look at TP% and pedal %—they should change smoothly with no dropouts. Wiggle tests on the harness and checking earths also save misdiagnosis.

If the throttle body is dirty, a careful clean of the bore and edges of the plate can help idle stability. Don’t lever the plate by hand on ETCS‑i units and avoid soaking the motor/shaft area. Use suitable throttle cleaner sparingly and fit a new gasket if the body is removed. After any throttle body work, the ECU may need an idle relearn/initialisation, a capable scan tool makes this quick, otherwise allow it to idle to temperature without loads and then drive a gentle cycle.

When replacing the assembly, follow torque specs, keep the connector pristine, and clear codes. Genuine or quality OEM‑equivalent DENSO units tend to deliver the best long‑term behaviour on these engines.

Popular questions

Does the 2009 Toyota Blade have a separate throttle position sensor?

It uses a TPS that’s integrated into the electronic throttle body, plus a separate accelerator pedal position sensor on the pedal. Toyota’s ETCS‑i strategy relies on both sensors for redundancy and smooth control.

Do I need to calibrate anything after replacing the throttle body on a Blade?

Yes—perform an idle learn/initialisation. With a proper scan tool it’s straightforward, otherwise, a controlled idle warm‑up and gentle drive cycle usually allows the ECU to relearn. Clear fault codes and verify stable idle and throttle response.

What symptoms point to a failing TPS on this model?

Spiking or flat‑spot throttle data, erratic idle, limp mode, and DTCs like P0120–P0124/P0220–P0223. Always confirm with live data before replacing the throttle body.