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Parts for your 2015 Toyota Hilux-Throttle position sensors
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2015 Toyota Hilux throttle-position-sensors: what they do and when to replace them
Based on Toyota’s technical literature for the 2015 Hilux (including the Repair Manual engine control sections and the Electrical Wiring Diagram), both the petrol (2TR‑FE 2.7 and 1GR‑FE 4.0) and diesel (1KD‑FTV 3.0) variants use electronic throttle control with throttle-position-sensors. The manuals reference TPS-related signals and diagnostics (e.g., VTA/E2 circuits and OBD‑II DTCs P0120–P0124, P2135), confirming a throttle-position-sensor is fitted and relevant on this model year.
On a 2015 Hilux, the throttle-position-sensor tells the engine control module exactly how far the throttle plate is open, so it can match fuelling, spark, and transmission behaviour to the driver’s right foot. On diesels, the throttle plate also manages EGR flow and smooth shutdown, so the sensor’s feedback helps keep idle stable and transitions clean. When the signal goes walkabout, the ute can feel lazy off the mark, surge at cruise, hunt at idle, or kick the check engine light and limp mode.
Servicing the throttle-position-sensor is mostly about prevention. Keep the intake plumbing and connectors clean and dry, especially after off‑road use or water crossings. Avoid blasting the throttle body with harsh cleaners, if the butterfly needs a tidy-up, remove the assembly and use a sensor‑safe cleaner, taking care not to soak the TPS area. Inspect the harness for rub-through near the throttle body and at the engine cover—chafed wiring is a common culprit for intermittent TPS faults.
Replacement is straightforward but varies by engine. On many 2015 Hilux models, the throttle-position-sensor is integrated into the throttle body (petrol) or the throttle control motor/intake air control valve (diesel). That means replacing the complete unit rather than the sensor alone. Typical steps include disconnecting the battery, removing the intake tube, unplugging the connector(s), unbolting the assembly, fitting a new gasket, and tightening evenly to spec. Once refitted, an idle/throttle learn or ETCS initialization with a scan tool (Toyota Techstream or equivalent) is recommended so the ECU relearns the new sensor’s range.
- Watch for DTCs like P0120–P0124 or P2135, flat spots on tip-in, rough idle, and cruise drop-outs.
- No fixed interval—check operation during routine services (every 20,000–40,000 km), especially after dusty or wet use.
- Never force the throttle plate by hand and always reseal with a fresh gasket.
Does a 2015 Hilux diesel have a throttle-position-sensor?
Yes. On the 1KD‑FTV diesel it’s built into the throttle control motor/intake air control valve. It monitors plate angle for EGR control and smooth shutdown, even though the engine isn’t throttle‑controlled in the petrol sense.
Can the throttle-position-sensor be replaced separately from the throttle body?
On most 2015 Hilux variants it’s part of the throttle body (petrol) or throttle control motor (diesel), so replacement usually means swapping the whole unit. Some aftermarket options exist for certain petrol setups, but it’s best to confirm by VIN.
Is a relearn or calibration needed after TPS or throttle body replacement?
Recommended, yes. Perform an ETCS/throttle learn with a scan tool so the ECU stores correct minimum and maximum angles. Without it, idle quality and response can be off until it adapts—if it adapts at all.
