Parts for your 2020 Toyota Hilux-Throttle position sensors

2020 Toyota HiLux throttle position sensors — what they do and how to look after them

The 2020 Toyota HiLux does use a throttle position sensor. On the petrol 2TR‑FE it’s built into the electronic throttle body, on the 1GD‑FTV and 2GD‑FTV diesels it’s integrated with the intake air throttle (also called the throttle control motor) that manages EGR flow and smooth shutdown. Toyota’s N80 HiLux Repair Manual and parts catalogue describe these assemblies as including a position sensor that the ECM reads to confirm commanded throttle angle and to coordinate torque, cruise control, idle quality and emissions. So, whether the ute is diesel or petrol, a TPS is part of the drive‑by‑wire setup and is essential for accurate throttle control.

Purpose wise, the TPS reports the actual throttle plate angle in real time. The ECM compares that signal against the accelerator pedal position, airflow and boost targets to deliver the right amount of torque without surging. On the diesels, that position feedback lets the ECM pull in the correct amount of EGR and reduce intake shudder on shutdown, on the petrol, it’s central to throttle mapping, transmission shift timing and traction aids. If the signal is erratic or out of range, the HiLux may drop into limp mode, flare or hunt at idle, hesitate off the mark, or log codes such as P0121, P2135, P2111 or P2101.

As for servicing, the sensor itself isn’t a separate serviceable item on these models, it’s part of the throttle body/intake throttle. During routine servicing, check the connector for corrosion or water ingress, verify the harness isn’t strained, and clean light carbon from the throttle plate and bore with a sensor‑safe throttle cleaner. Avoid forcing the plate by hand. If faults persist after cleaning and pin‑checking, replacement of the throttle body assembly is the go. Always fit a new gasket, clear learned values and run a throttle/idle relearn with a capable scan tool. After battery disconnection or part replacement, let the engine idle without loads for a few minutes so the ECM can stabilise airflow and target idle. Using genuine‑quality parts helps keep the calibration spot on. Record freeze‑frame data and clear codes, then road‑test for confirmation after repairs.

Technical sources referenced: Toyota Global Technical Information System (TIS) HiLux N80 Repair Manual — Engine Control (1GD‑FTV/2GD‑FTV: Intake Air Throttle/Throttle Control Motor with position sensor), Engine Control (2TR‑FE: Electronic Throttle Control System — throttle body with built‑in position sensor), Toyota Electronic Parts Catalogue for throttle body/valve assemblies, Toyota OBD diagnostic listings for TPS and throttle actuator DTCs.

Popular questions

Where is the throttle position sensor on a 2020 HiLux?
It’s built into the throttle assembly. On petrol models, that’s the electronic throttle body mounted on the intake. On diesels, it’s part of the intake air throttle (throttle control motor) near the EGR/charge‑air pipework. The sensor isn’t a separate plug‑in part, it’s integral to the unit.

What symptoms point to a failing TPS on a 2020 HiLux?
Common give‑aways include poor throttle response, intermittent limp mode, an erratic or high idle, stalling when coming to a stop, and the check engine light. Scan tools often reveal codes such as P0121, P2135, P2101 or P2111. Always inspect wiring and clean the throttle before calling the assembly faulty.

Does the TPS need calibration after replacement?
Yes. After fitting a new throttle body or intake throttle, clear learned values and perform a throttle/idle relearn with a suitable scan tool. Let the engine idle with all accessories off for a few minutes so the ECM can relearn airflow and target idle. This helps avoid surging and keeps shift quality tidy.