Parts for your 2007 Toyota Caldina-Throttle position sensors

2007 Toyota Caldina throttle position sensor: what it does and how to look after it

Short answer: yes, the 2007 Toyota Caldina uses a throttle position sensor (TPS). Toyota’s New Car Features (NCF) for ETCS‑i (electronic throttle control), the Toyota Repair Manual for Caldina T24# models (ZZT241/246, AZT241/246, ST246), and the Toyota Electronic Parts Catalogue all show a dual‑track TPS integrated into the throttle body, feeding VTA/VTA2 signals to the ECM. Relevant fault codes include P0120–P0124, P0220–P0224 and P2135, which the manuals list for this sensor circuit. It’s part of the throttle body assembly and is not separately adjustable.

On a 2007 Caldina, the TPS tells the engine computer exactly how far the throttle plate is open. Because these models run ETCS‑i (drive‑by‑wire), the ECM uses TPS feedback to match the commanded throttle opening to actual throttle angle, fine‑tune fuel and ignition, manage idle speed and cruise control, and even influence auto shift behaviour. The Caldina’s throttle body carries two TPS tracks for redundancy, so the ECM can cross‑check them for safety.

There’s no scheduled replacement for the throttle position sensor, but keeping the throttle body clean and the connector healthy goes a long way. If idle is rough, the throttle sticks, or fuel use climbs, a careful throttle body clean can help. Don’t drown the shaft seals or spray directly into the sensor housing—use throttle‑safe cleaner and a soft cloth. After battery disconnect or cleaning, an idle/throttle relearn may be needed