Parts for your 2007 Toyota Hilux surf-Throttle position sensors

2007 Toyota Hilux Surf throttle position sensor: what it does, why it matters, and how to keep it sweet

Yes, a throttle position sensor is relevant and fitted to the 2007 Toyota Hilux Surf. Toyota’s own technical literature confirms it: the N210-series Hilux Surf (4Runner) with the 1GR-FE petrol V6 uses ETCS‑i (electronic throttle control) with dual throttle position sensor signals (VTA1/VTA2) built into the throttle body, and the 1KD‑FTV 3.0 D‑4D diesel uses an electronically actuated throttle/air control valve with an integral position sensor. References include the Toyota Repair Manual for the N210 platform (Engine Control – ETCS‑i), Toyota Electrical Wiring Diagram (EWD) for 2007 Hilux Surf, and DENSO electronic throttle control descriptions used by Toyota.

On this model, the throttle position sensor (TPS) is part of the throttle body assembly rather than a separate bolt-on switch like older Toyotas. Its job is to report the exact angle of the throttle plate to the engine control module so fuelling, ignition and transmission shift strategy stay on point. In drive‑by‑wire systems, accuracy and redundancy matter, so Toyota uses two TPS signals to cross‑check each other, keeping the Surf responsive and safe even if one reading misbehaves.

Typical signs the TPS/throttle body needs attention include erratic idle, a flat spot on take‑off, cruise control dropping out, harsh or late shifts, or a sudden limp‑home mode. Common fault codes you might see are P0120–P0124 and P2135 for signal or correlation issues.

As part of regular servicing, it’s smart to:

• Inspect the throttle body connector and wiring under the bonnet for moisture, oil wicking, or green corrosion.
• Clean the throttle bore and plate with a proper throttle‑body cleaner. Avoid drowning the motor/gear side of the unit.
• Scan live data to verify smooth, linear throttle angle change and good agreement with accelerator pedal position.

If the TPS is faulty on a 2007 Hilux Surf, the fix is usually to replace the complete throttle body. Use a new gasket, keep the mating surfaces clean, and torque the throttle body bolts to factory spec (around 20 N·m is typical for Toyota alloy throttle bodies). After replacement or a thorough clean, perform a throttle/idle learn with a capable scan tool (Techstream or equivalent). If a scan tool isn’t handy, allowing the engine to idle at operating temperature with all accessories off for several minutes can help the ECU relearn baseline airflow, but a proper initialisation via scan tool is best.

Genuine or high‑quality OEM‑equivalent parts are recommended, they tend to last longer and behave better across Aussie and Kiwi temperature swings and dusty conditions. Keeping the intake clean and the air filter fresh also reduces soot build‑up that can skew TPS readings over time.

Does the 2007 Hilux Surf have a separate TPS or is it built into the throttle body?

On this model it’s integrated into the electronic throttle body (petrol) or the electronic throttle/air control valve (diesel). That means if the sensor fails, the usual repair is to replace the whole unit rather than just the sensor.

What fault codes point to a TPS issue on a 2007 Hilux Surf?

Expect codes like P0120–P0124 (TPS circuit range/performance) and P2135 (throttle/pedal position sensor A/B correlation). These often come with limp mode, poor throttle response, or an unstable idle. Always check wiring and connector integrity before condemning the part.

Is calibration needed after replacing the throttle body?

Yes. Perform a throttle body/idle learn with a scan tool so the ECU stores the new throttle plate positions. Without it, the engine may idle high or low, or feel a touch lazy off the mark. Some relearn can occur naturally after a short drive cycle, but a formal initialisation is the tidy way to go.