Parts for your 2007 Toyota Avensis-Throttle position sensors

2007 Toyota Avensis throttle position sensor (TPS): what it does and how to look after it

Based on technical references including the Toyota Avensis T25/T250 Repair Manual and wiring diagrams (EWD), plus Autodata and Bosch system descriptions of ETCS‑i (electronic throttle control), the 2007 Toyota Avensis is fitted with a throttle position sensor. On petrol engines, the TPS is integrated into the electronic throttle body (usually a dual‑track sensor, VTA1/VTA2). On D‑4D diesels, a throttle valve (intake air control/anti‑shudder) with a position sensor is used for EGR control and smooth shutdown, so position feedback is still relevant on those models.

The TPS tells the engine control module exactly where the throttle plate sits. That live angle data lets the ECU match fuel, ignition timing and idle control to the driver’s right foot, keep emissions tidy, and smooth out cruise control and A/C load changes. On these Avensis models, the ECU also cross‑checks TPS with the accelerator pedal position sensor for safety and drivability.

Typical TPS‑related niggles include a hunting idle, hesitation off the line, sudden limp‑home, or a stubborn check‑engine light. Common fault codes are P0120–P0124, P0220–P0223 and P2135 for correlation errors. Auto transmissions can shift a bit harshly if the ECU isn’t confident about throttle angle.

There’s no scheduled replacement for the TPS, it’s more about condition than kilometres. Under the bonnet, keep the throttle bore clean and the connector dry and tight. On most 2007 Avensis petrols, the TPS is part of the throttle body and not serviced separately, so a confirmed sensor fault often means replacing the whole throttle body assembly and gasket. After cleaning or replacement, use Techstream (or equivalent) to run ETCS‑i/throttle initialization and an idle learn so the ECU knows the new closed and open angles.

Quick servicing tips:

• Diagnose first: check live data for smooth voltage sweep (roughly ~0.6–0.8 V closed to ~3.5–4.5 V wide‑open on petrol ETCS‑i) and that both tracks agree.
• Clean the throttle bore with MAF‑safe cleaner, don’t force the plate by hand on drive‑by‑wire units.
• If replacing the throttle body, use a new gasket, torque evenly, and perform throttle/idle relearn.
• On D‑4D, a sticky intake throttle can cause rough shutdown or EGR faults, cleaning and, if required, replacing the valve restores proper position feedback.

Done right, the Avensis will idle smoothly, pick up cleanly, and stay out of limp mode—no dramas.

Popular questions

Does a 2007 Toyota Avensis have a throttle position sensor?
Yes. Petrol models use a dual‑track TPS built into the electronic throttle body. D‑4D diesels use a throttle (intake air control) with a position sensor mainly for EGR flow control and soft shutdown, so position sensing is still part of the system.

Can the TPS be replaced on its own, or is it part of the throttle body?
On most 2007 Avensis petrol engines, the TPS is integrated and not sold separately by OEM suppliers—replacement typically means a complete throttle body. Some aftermarket options exist, but it’s best to confirm by VIN and inspect the unit on the car.

Is a relearn needed after cleaning or replacing the throttle body?
Yes. After any cleaning that alters the blade position or after parts replacement, perform ETCS‑i/throttle initialization and an idle learn with a capable scan tool. Without a tool, the ECU may relearn over time, but a proper initialization gives a stable idle much quicker.