Parts for your 2014 Toyota Hilux-Throttle position sensors

2014 Toyota Hilux throttle position sensor (TPS) – what it does and how to look after it

Based on Toyota’s own service literature for the 2011–2015 Hilux (KUN/GGN series) and the Electrical Wiring Diagram for these models, the 2014 Hilux is fitted with throttle position sensing. Petrol variants (1TR‑FE/2TR‑FE) use a drive‑by‑wire throttle body with dual TPS tracks (VTA1/VTA2) built into the throttle actuator. Diesel variants (1KD‑FTV/2KD‑FTV) use an electronically controlled throttle valve for EGR/idle control that also includes a position sensor. Toyota’s DTC list for this generation includes TPS‑related codes such as P0120–P0123, P0220–P0223 and P2135, confirming the system is monitored and used by the ECM.

On a 2014 Hilux, the TPS tells the engine computer exactly how far the throttle blade is open. That info is used to manage fuel delivery, ignition timing (petrol), EGR and idle control (diesel), and to smooth out tip‑in so it feels crisp without being jumpy. The unit is typically integrated into the throttle body or throttle actuator rather than being a separate bolt‑on sensor, which is why Toyota parts catalogues usually list the complete assembly when the sensor fails.

When the TPS starts going out of range, drivers may notice a slightly erratic idle, flat spots on take‑off, harsher gear changes in autos, higher fuel use, or the MIL popping on. Scan tools will often show mismatched VTA1/VTA2 signals or set correlation codes. Because the sensor is dual‑track, the ECM can compare the two signals and throw a code early before things get worse.

• Good servicing habits:
  • Keep the throttle body clean. A light clean of the throttle bore and plate with proper throttle cleaner at major services helps prevent sticky movement that can be mistaken for a sensor fault. Don’t force the plate by hand on electronic throttles.
  • Check connectors. Under‑bonnet plugs cop heat and dust. Reseat the throttle/actuator connector and look for green crust or loose terminals.
  • Use live data. With a scan tool, watch TPS (VTA1/VTA2) sweep smoothly from about 0.5–0.7 V closed to roughly 4.3–4.7 V wide open, with both tracks agreeing.
  • Relearn if needed. After cleaning or replacement, allow the ECM to relearn idle (key‑on/engine‑off for a short period, then idle without the A/C for a few minutes), or follow scan‑tool prompts where available.

If replacement is required, most 2014 Hilux variants need the complete throttle body/actuator assembly because the TPS is integrated. Genuine or quality OEM‑equivalent parts keep the dual‑track accuracy the ECM expects, helping avoid repeat faults. A quick road test with live data afterwards confirms it’s all sweet, and drivers can get back to racking up the kilometres without fuss.

Does a 2014 Hilux have a throttle position sensor?

Yes. Both petrol and diesel 2014 Hilux models use throttle position sensing. Petrol engines have the TPS built into the electronic throttle body, while diesels have a position sensor on the electronic throttle valve used for EGR and idle control. Toyota diagnostic codes for this model include TPS‑related faults, which confirms it’s part of the design.

What are the signs of a failing TPS on a 2014 Hilux?

Common clues include a rough or wandering idle, hesitation on take‑off, inconsistent throttle response, higher fuel use and the check engine light. A scan may show codes like P0120–P0123 or P2135, or live data that doesn’t sweep smoothly. Rule out a dirty throttle and poor electrical connections before condemning the sensor.

Can the TPS be replaced separately on a 2014 Hilux diesel?

Typically, Toyota supplies the diesel throttle position sensor as part of the throttle actuator assembly rather than a separate service item. Some aftermarket options may sell the sensor alone, but many workshops prefer replacing the complete unit to maintain calibration and reliability, then performing an idle/throttle relearn.