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Parts for your 2011 Toyota Blade-Throttle position sensors
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2011 Toyota Blade throttle-position-sensors (TPS): what they do, and how to keep them sweet
Yes, the 2011 Toyota Blade uses throttle-position-sensors. Toyota’s own technical literature for the Blade/Auris E150 platform—covering the AZE154H (2AZ‑FE 2.4L) and GRE156H (2GR‑FE 3.5L)—describes an ETCS‑i (Electronic Throttle Control System – intelligent) throttle body with dual throttle position signals (VTA and VTA2) built into the unit. See Toyota New Car Features (NCF) for 2AZ‑FE/2GR‑FE and the Toyota Repair Manual/SFI and EWD sections listing ECM pins VTA/VTA2 and related DTCs (P0120–P0124, P0220–P0224). On this model, the TPS is integral to the throttle body and is not a separate, adjustable sensor.
On the 2011 Toyota Blade, the throttle-position-sensors tell the engine control module exactly where the throttle plate is, so it can match airflow to the driver’s right foot, fuel the engine correctly, and keep idle stable. Toyota uses a pair of TPS circuits inside the electronic throttle body for redundancy and safety. If the signals don’t agree, the car can drop into limp mode to protect the engine and occupants.
Because the TPS is built into the throttle body, servicing leans more towards inspection, cleaning and testing rather than adjustment. There’s no mechanical “set” procedure—if the sensor goes out of range or fails correlation checks with the accelerator pedal sensor, it will flag a code and usually requires replacing the throttle body assembly.
- Typical symptoms: erratic idle, poor throttle response, sudden limp mode, high or hunting idle, and engine light with TPS/ETCS‑i codes (e.g., P0121, P0221, P2135).
- Good practice during regular servicing (every 40,000–60,000 km in AU/NZ conditions):
- Scan live data and check both TPS traces (VTA/VTA2) for smooth, matching movement.
- Clean the throttle body bore and blade with approved cleaner, don’t force the blade open or soak the electronics.
- Inspect the harness and connector for moisture, corrosion or chafing—voltage drop and poor earths can mimic a bad TPS.
- After cleaning or replacement, perform an idle relearn or throttle/ETCS reset using a scan tool or the battery‑disconnect method as specified by Toyota.
If replacement’s needed, use a quality throttle body (genuine or proven OE‑equivalent), fit a new gasket, and torque to spec. Keep battery voltage stable during any relearn. Given the safety role of ETCS‑i, it’s worth having a technician verify pedal vs throttle correlation and clear any stored history codes after the job. Treated well, the Blade’s ETCS‑i throttle body and its internal TPS pair are reliable for long kilometres.
Popular questions
Does a 2011 Toyota Blade actually have a TPS?
It does. The Blade’s ETCS‑i throttle body houses two TPS circuits (VTA/VTA2). They constantly report throttle angle to the ECM and are essential for smooth driveability and failsafe operation.
Can the TPS be replaced on its own, or is it part of the throttle body?
On this model it’s integrated. Toyota doesn’t specify an adjustment, and in most cases supplies the TPS only as part of the complete throttle body. Diagnosis should confirm the fault first, as wiring or pedal sensor issues can trigger similar codes.
What’s the best maintenance routine to avoid TPS‑related hassles?
Periodic throttle body cleaning, checking connectors, and scanning live data at service time go a long way. If drivability issues crop up, look at DTCs and compare pedal and throttle signals before throwing parts at it.
