Parts for your 2000 Toyota Altezza-Throttle position sensors

2000 Toyota Altezza Throttle Position Sensor (TPS)

Yes, the 2000 Toyota Altezza uses a throttle position sensor. Technical references such as the Toyota Repair Manual for SXE10/GXE10 models, the Toyota Electronic Parts Catalog (EPC), and Denso throttle body documentation all list a TPS on the throttle body. On the RS200 (3S‑GE, often with ETCS‑i electronic throttle), Toyota specifies main and sub TPS signals, on the AS200 (1G‑FE cable throttle), a conventional potentiometer‑type TPS is fitted. So it’s absolutely relevant to this vehicle.

The TPS reports the throttle shaft angle to the engine control unit (ECU). That live signal helps the ECU manage fueling, ignition timing, idle control, decel fuel cut, and driveability under quick throttle changes. On automatic Altezza variants, it also influences shift timing and kick‑down behaviour. When the TPS is healthy, throttle response feels crisp and consistent, and fuel economy stays on target.

As part of regular servicing, it’s smart to check the TPS and its wiring. Common clues of a worn or misreporting TPS include erratic idle, flat spots on take‑off, stalling when coming to a stop, harsh or late shifts on autos, and a glowing MIL with fault codes such as P0120–P0123 or P0220 series. A quick visual of the connector for corrosion or broken locking tabs goes a long way. When cleaning the throttle body, avoid drowning the TPS in solvent—use throttle cleaner sparingly and keep fluid out of the sensor housing.

Electrical checks can be done with a multimeter or scan tool. Expect a smooth increase in voltage or throttle angle reading from closed to wide open (typically around 0.5–0.7 V at closed throttle up to about 4.5 V at WOT on many Toyota systems). If the reading jumps or drops out, the resistive track may be worn. On some Altezza throttles the TPS is adjustable with slotted mounting holes—closed‑throttle voltage or “IDL” switch engagement must be set to spec after installation. On ETCS‑i units, the TPS may be non‑adjustable and serviced as part of the throttle body, follow the Toyota manual for the exact variant.

• Inspect at major services or every 100,000 km.
• Use OEM‑quality parts, cheap sensors often drift.
• After replacement, clear codes and perform an idle/throttle relearn if specified.

Does a 2000 Toyota Altezza have a TPS?

It does. Toyota’s service information for SXE10 (RS200, 3S‑GE) and GXE10/AS200 (1G‑FE) shows a TPS on the throttle body. ETCS‑i cars use main/sub TPS signals, cable‑throttle cars use a single potentiometer‑type TPS.

What are the common TPS symptoms or fault codes on an Altezza?

Drivers may notice surging, a hanging or hunting idle, flat spots, poor fuel economy, or harsh shifts on autos. Typical OBD codes include P0120, P0121, P0122, P0123, and P0220‑range codes, indicating circuit, range/performance, or correlation issues.

Can the TPS be cleaned or adjusted, or should it be replaced?

You can clean the throttle bore but avoid spraying directly into the TPS. If the unit is the adjustable type, set closed‑throttle voltage/IDL switch to spec. If readings are erratic or the unit is sealed/non‑adjustable (common on some ETCS‑i throttles), replacement is the reliable fix.