Parts for your 2007 Toyota Hiace-Throttle position sensors

2007 Toyota Hiace Throttle Position Sensor (TPS)

Based on Toyota service information for the H200 Hiace platform and common OBD-II diagnostics used by Toyota dealers (TIS repair manuals and wiring diagrams), the 2007 Toyota Hiace does use throttle position sensing. Petrol variants (1TR-FE 2.0L and 2TR-FE 2.7L) run ETCS-i electronic throttle bodies with dual TPS elements built in, and common-rail diesel variants (2KD-FTV/1KD-FTV) have an electronically controlled intake throttle valve with an integral position sensor. Toyota EPC listings and factory DTCs such as P0120, P0220 and P2135 further confirm TPS functionality on these engines.

For this Hiace, the throttle position sensor tells the engine ECU exactly how far the throttle plate (or intake air control valve on diesel) is opened. That live signal is critical for fuelling, ignition timing, EGR control and transmission shift strategy. On petrol models the sensor is part of the throttle body assembly, working alongside the motor that drives the blade. On diesel models it’s paired with the throttle/intake shutter that manages EGR flow and smooth shutdown.

During regular servicing, it’s smart to give the throttle body area some attention. On petrol versions, a gentle clean of the throttle bore and blade with throttle-body-safe cleaner can help prevent sticky operation and erratic idle, but the TPS itself isn’t a separate serviceable part—if the sensor fails, the complete throttle body is typically replaced. On diesel versions, cleaning carbon from the intake throttle and ensuring the connector and loom are tidy helps keep the position signal stable.

• Common signs the TPS circuit needs love include: uneven idle, hesitation on tip-in, flat spots, cruise control drop-outs, auto shift flare or harshness, and a check engine light with codes like P0120/P0220/P2135.
• If replacement is needed, choose quality OEM or OE-equivalent parts. For petrol, that’s the full throttle body, for diesel, the intake throttle assembly with the built-in position sensor.
• After fitting, perform a throttle/idle learn with a capable scan tool. Many Hiace ECUs will relearn with key-cycles or a brief battery disconnect, but a proper scan-tool reset is the tidy way to go.
• Keep connectors clean and pinned correctly, a lot of “TPS faults” are actually wiring resistance or poor grounds.

Look after the TPS and the Hiace rewards with crisp response, cleaner shifts and fewer surprise limp-mode moments on those long Aussie and Kiwi runs.

Does a 2007 Toyota Hiace actually have a TPS, and where is it?

Yes. Petrol models have the TPS built into the electronic throttle body on the intake manifold. Common-rail diesels have a position sensor built into the electronically controlled intake throttle valve (air control shutter). Both are monitored by the ECU and will log TPS-related DTCs if readings go out of range.

What symptoms point to a failing TPS on this Hiace?

Owners may notice a check engine light, surging or stumbling on light throttle, poor or “lazy” kickdown in autos, or an unstable idle. Scan tools often reveal codes such as P0120, P0220 or P2135. If cleaning the throttle bore doesn’t help, testing the wiring and replacing the relevant throttle assembly is the next step.

Can the TPS be adjusted or cleaned, or does it need replacing?

There’s no manual adjustment on these units. On petrol models the TPS is non-serviceable and comes with the throttle body, replacement is the fix. On diesels, the intake throttle can be cleaned of carbon and replaced as an assembly if the sensor fails. After work, run a throttle/idle relearn with a scan tool for best results.