Parts for your 2022 Toyota Land cruiser-Throttle position sensors

2022 Toyota Land Cruiser throttle position sensor (TPS)

Based on Toyota’s technical literature for the J300-series Land Cruiser — including the Toyota Repair Manual (Engine Control – SFI/EFI), Toyota New Car Features (J300) and the Electrical Wiring Diagram — the 2022 Land Cruiser uses electronic throttle control (ETCS‑i). The throttle body contains a throttle control motor and dual throttle position sensor circuits (often labelled VTA1/VTA2) that feed the engine ECU. So yes, a throttle position sensor is fitted and very much relevant on the 2022 Toyota Land Cruiser.

On this model, the TPS constantly reports the exact angle of the throttle plate so the ECU can manage air flow, fuel injection, ignition timing and turbo boost strategy on both the V35A‑FTS petrol and F33A‑FTV diesel engines. Because it’s a drive‑by‑wire setup, the TPS also cross‑checks with the accelerator pedal position sensor to ensure the system is behaving safely and smoothly. If those signals don’t line up, the ECU can drop the vehicle into limp mode to protect the engine and driveline.

As part of servicing a 2022 Land Cruiser, there’s no routine replacement interval for the TPS — it’s designed to be maintenance‑free. Practical checks during scheduled servicing should include scanning for fault codes (think P0121, P0122, P0123, P2135), reviewing live data for stable throttle angle readings, and visually inspecting the throttle body connector and harness for moisture or damage. If the throttle body is removed for any reason, don’t force the butterfly by hand. If cleaning is required for carbon build‑up, use appropriate throttle body cleaner and avoid soaking the motor/sensor area.

Worth noting: on the J300, the TPS is integrated into the throttle body and isn’t a separate, serviceable item. If testing confirms a TPS fault, the remedy is typically to replace the throttle body assembly. After replacement, perform ETCS/throttle initialization with a scan tool (Toyota Techstream) and allow the ECU to relearn idle air volume with a brief idle/drive cycle. A weak battery or poor grounds can mimic sensor faults, so check battery health and charging voltage before calling the sensor. Typical symptoms of a TPS issue include erratic idle, poor throttle response, surging, unexpected transmission shift behaviour, and the check engine light.

• Replace only when diagnostics and Toyota procedures confirm a TPS/throttle body fault.
• After any throttle body work, carry out throttle learning and a short drive to settle trims.
• Keep connectors clean and latched, water ingress is a common culprit in off‑road use.

Popular questions

Does the 2022 Land Cruiser actually have a throttle position sensor?
Yes. Toyota’s J300 Land Cruiser uses ETCS‑i with a throttle body that houses the motor and dual TPS circuits. The ECU relies on those signals to control air, fuel and emissions, and to verify what the accelerator pedal is asking for.

Can the TPS be replaced on its own, or is it part of the throttle body?
It’s integrated. On the 2022 model the TPS isn’t serviced separately. If diagnostics point to a failed TPS, the correct fix is to replace the throttle body assembly, then initialise the throttle with a scan tool and complete an idle learn.

Do I need to calibrate anything after replacing the throttle body?
You do. Perform ETCS/throttle initialization using a compatible scan tool (e.g., Toyota Techstream), then let the engine idle and follow the specified drive cycle so the ECU can relearn idle air volume and throttle targets. Skipping this can leave the Cruiser with a rough idle or delayed throttle response.