Parts for your 2007 Toyota Ractis-Throttle position sensors

2007 Toyota Ractis throttle position sensors (TPS)

Based on Toyota technical literature, the 2007 Toyota Ractis (NCP100/NCP105 with 1NZ‑FE 1.5L and 2SZ‑FE 1.3L engines) uses Electronic Throttle Control (ETCS‑i), which incorporates dual throttle position sensing inside the throttle body, not a separate, bolt‑on TPS. Toyota’s New Car Features (ETCS‑i overview for 1NZ‑FE/2SZ‑FE), the Ractis Repair Manual section “Throttle Body with Motor & Sensor,” and the Electrical Wiring Diagram (VTA1/VTA2 feedback circuits and related DTCs such as P0120–P0124/P2135) all describe a motorised throttle body with integrated TPS and an accelerator pedal position sensor on the pedal. So yes—throttle position sensors are used on the 2007 Ractis, but they’re built into the throttle body assembly.

On this Ractis, the throttle position sensors tell the engine computer exactly how far the throttle plate is opened, so it can manage fuelling, spark timing, idle speed and even traction and cruise control. Because ETCS‑i is drive‑by‑wire, the ECU blends the pedal request with the TPS feedback to keep everything smooth and safe under the bonnet.

When the TPS inside the throttle body starts to play up, the driver may notice a rough idle, hesitant take‑off, surging, poor fuel economy or a check engine light. Common fault codes include P0120–P0124 or P2135 for mismatch between the two TPS tracks. A good scan tool can graph VTA1/VTA2—on a healthy unit they’ll sweep smoothly and agree with each other.

Servicing is far less about “adjusting the TPS” (there’s nothing to adjust) and more about keeping the throttle body clean and the connectors sound. Every 20,000–40,000 kilometres, it’s sensible to remove the intake hose and carefully clean the throttle bore and plate using approved throttle cleaner. Avoid drowning the sensor area, a light spray on a cloth does the trick. Check the TPS connector for green corrosion and the loom for chafe near the throttle body—moisture and heat can be a nuisance in Aussie and Kiwi conditions.

If the integrated TPS fails, replacement is by swapping the complete throttle body assembly. Budget for a new gasket, and catch a small amount of coolant if the unit is coolant‑heated. Torque the bolts to spec, reconnect, and perform an idle learn/throttle relearn. With Toyota Techstream (or an equivalent capable scan tool), run the throttle body and idle air volume learning procedure, otherwise, a battery reset plus a gentle drive cycle can help the ECU relearn. Clear any codes, confirm a stable idle, and verify smooth VTA1/VTA2 tracking on the scan tool. Using a genuine or high‑quality aftermarket throttle body helps avoid repeat issues and keeps the little Ractis running sweet as.

• Signs of trouble: erratic idle, limp mode, poor economy, MIL on
• Maintenance tip: clean throttle bore/plate, inspect connectors and wiring
• Repair path: replace throttle body assembly, perform relearn

Popular questions

Does the 2007 Toyota Ractis have a removable throttle position sensor?

No. On this model the TPS is built into the motorised throttle body as dual tracks. If the sensor fails or goes out of range, the fix is to replace the throttle body assembly rather than a stand‑alone sensor. That’s how Toyota designed ETCS‑i on the 1NZ‑FE and 2SZ‑FE engines.

How do you reset the throttle after cleaning or replacement?

Best practice is to use a capable scan tool (e.g., Toyota Techstream) to run the throttle/idle air volume learn routine. Without a tool, disconnect the battery for a few minutes, reconnect, start the engine with all loads off, let it idle until warm, then take a short, gentle drive so the ECU can relearn. Clear any stored codes and recheck idle quality.

What fault codes point to a TPS issue on a 2007 Ractis?

Typical codes are P0120–P0124 for throttle position circuit range/performance and P2135 for correlation between the two TPS signals. If these appear with drivability symptoms, inspect the throttle body, connector and wiring first, then consider replacing the throttle body if the signals are erratic.