Parts for your 2006 Toyota Hiace-Throttle position sensors

2006 Toyota Hiace throttle position sensor (TPS)

Based on Toyota’s factory sources — including the Technical Information System (TIS), the Electronic Parts Catalogue (EPC), and the Hiace H200 wiring diagrams for 2005–2009 — the 2006 Toyota Hiace does use a throttle position sensor. On the 2TR‑FE 2.7‑litre petrol, the TPS is built into the electronic throttle body (ETCS‑i) alongside the throttle actuator motor. On the 1KD‑FTV 3.0 D‑4D diesel, there’s an electronically controlled intake throttle (used for EGR flow and smooth shutdown) with an integrated throttle valve position sensor, and the vehicle also uses an accelerator pedal position sensor. In short: a TPS (or throttle valve position sensor) is relevant and fitted on 2006 Hiace variants.

The TPS on a 2006 Hiace tells the engine control module exactly how far the throttle blade is open, so fueling and ignition (and on diesels, EGR and idle control) can be managed cleanly. In everyday terms, it helps the van pick up smoothly from the lights, keeps idle steady with the air‑con on, and stops it from hunting or hesitating on hills.

As part of routine servicing, it pays to check throttle data with a scan tool — the TPS should sweep smoothly from closed to wide‑open without flat spots. For petrol models, a dirty throttle body can cause flaky readings, so a careful clean of the throttle bore (avoiding drowning the electronics) often restores crisp response. On 1KD diesels, a sticky intake throttle from EGR soot can mimic a bad sensor, cleaning the throttle/EGR assembly is a common fix.

Most 2006 Hiace throttle position sensors are non‑serviceable and integrated into the throttle body. If the sensor fails or sets codes (think P0120–P0124, or P2102/P2111‑type throttle control faults), the usual remedy is replacing the throttle body assembly. After replacement, perform a throttle/idle learn with a capable scan tool and check for any wiring loom chafe near the throttle body and along the engine harness — voltage drop and poor grounds can throw false TPS faults. It’s also wise to confirm battery health, low system voltage can upset throttle electronics.

• Symptoms to watch for: erratic idle, flat spots off‑idle, sudden limp mode, higher fuel use, or a surging feel on cruise.
• Good practice: inspect connectors for corrosion, keep the throttle bore clean, scan for live TPS percentage and correlation with accelerator pedal data, and fix vacuum/air leaks that can confuse idle control.
• When replacing: use quality parts, fit a new gasket, and complete the ECU throttle relearn so it doesn’t idle too high or stall.

Popular questions about 2006 Toyota Hiace throttle position sensors

Does a 2006 Toyota Hiace have a throttle position sensor?
The 2006 Hiace does have a TPS. Petrol models (2TR‑FE) use a sensor built into the electronic throttle body, while diesels (1KD‑FTV) have a throttle valve position sensor on the intake throttle used for EGR and shutdown control. Toyota’s TIS, EPC, and H200 wiring diagrams all show these sensors as part of the engine management system.

What are common signs the TPS is failing on a 2006 Hiace?
Tell‑tales include hesitation off the mark, erratic idle, surging at steady speed, poor fuel economy, and the MIL coming on with throttle‑related fault codes. A scan tool will often show a TPS signal that doesn’t sweep smoothly, or fails to match accelerator pedal input.

Can the TPS be replaced on its own, or is it part of the throttle body?
On most 2006 Hiace variants the TPS is integrated into the throttle body, so the usual fix is replacing the complete throttle body assembly. The accelerator pedal position sensor is separate (on the pedal) and can be serviced individually. After fitting a new throttle body, carry out a throttle/idle relearn with a suitable scan tool.