Parts for your 2008 Toyota Hilux surf-Throttle position sensors

2008 Toyota Hilux Surf — Throttle Position Sensor (TPS)

Yes, a throttle position sensor is used on the 2008 Toyota Hilux Surf. Technical documentation for the N210 platform (the Hilux Surf/4Runner generation current in 2008) identifies a throttle body with built-in motor and dual-track throttle position sensors on the 1GR-FE 4.0‑litre petrol, and a throttle valve/air control unit with a position sensor on the 1KD-FTV 3.0‑litre diesel. This is described in Toyota’s Repair Manual engine control sections for 1GR‑FE and 1KD‑FTV, and backed by listings in the Toyota Electronic Parts Catalogue for the Hilux Surf/4Runner N210 series. DENSO’s ETCS‑i and electronic throttle body literature also notes redundant TPS circuits integrated into the throttle body on these applications.

On a 2008 Hilux Surf, the TPS tells the engine control module exactly how far the throttle plate is open. On the petrol V6, it’s part of the electronic throttle body, working alongside the accelerator pedal position sensor. On the diesel, the throttle valve’s position sensor helps manage EGR flow and smooth shutdown, even though the engine doesn’t use the throttle to control load in the same way as a petrol. Either way, clear throttle angle feedback is critical for smooth idle, crisp response, proper emissions control and stable cruise.

There’s no fixed replacement interval for the TPS, it’s a “inspect and replace if faulty” item. Sensible servicing for a Hilux Surf includes:

• Scan for DTCs such as P0120–P0124, P0220 series, or P2135 and review live data for erratic throttle angle.
• Clean the throttle body every 60–100,000 km using throttle‑body safe cleaner (avoid soaking the motor and electronics). Replace the gasket if the body comes off.
• Check the connector and harness for corrosion or chafing, especially on vehicles that see corrugations and off‑road splash.
• Perform the throttle/idle relearn with a scan tool after cleaning or replacement.

If the petrol model’s TPS is faulty, it generally means replacing the complete throttle body assembly, as the sensors are integrated and not designed for separate service. The diesel throttle valve position sensor is likewise integrated on most units. Signs that point to TPS issues include a hunting or high idle, sudden limp‑home behaviour, sluggish tip‑in, or odd automatic shift timing. Owners who keep the intake clean and connections tight usually enjoy long TPS life. When replacement is needed, genuine or high‑quality OEM assemblies keep the Hilux Surf behaving as it should.

Popular questions

Does a 2008 Hilux Surf actually have a TPS?
Yes. Both the 1GR‑FE petrol and 1KD‑FTV diesel variants use a throttle position sensor integrated into the throttle body or throttle valve assembly. It’s part of the electronic throttle control strategy outlined in Toyota’s workshop manuals for the N210 series.

Where is the TPS on the 2008 Hilux Surf?
It’s built into the throttle body on the petrol V6 and into the diesel’s throttle/air control valve on the intake. It’s not a stand‑alone bolt‑on sensor on these models, so access is via the throttle assembly at the front of the intake manifold.

Can the TPS be replaced separately, or does the whole throttle body need changing?
On most 2008 Hilux Surf configurations, the TPS is not serviced separately. If the sensor has failed or the readings are out of spec, the standard repair is to replace the complete throttle body (petrol) or throttle valve unit (diesel), then carry out a throttle/idle relearn with a scan tool.