Parts for your 2009 Toyota Fortuner-Throttle position sensors

2009 Toyota Fortuner throttle position sensor (TPS): purpose, care and replacement

Short answer: yes, the 2009 Toyota Fortuner does use a throttle position sensor. Toyota’s technical literature for the Hilux/Fortuner platform around these years (2TR-FE petrol and 1KD-FTV D-4D diesel) describes an electronic throttle control system with a position sensor integrated into the throttle body. The petrol ETCS-i system monitors throttle opening via the built-in TPS, and the diesel uses a motorised intake throttle valve for EGR and shutdown control, with a position sensor as well. These systems set OBD-II faults such as P0120–P0124 and P0220–P0223 when the TPS signal is out of range, as documented in Toyota repair manual diagnostics and EWDs for the platform.

On a 2009 Fortuner, the throttle position sensor is there to tell the engine ECU exactly how far the throttle plate (or intake air control valve on the diesel) is opened. On the 2.7-litre 2TR-FE petrol, it works hand-in-glove with the throttle motor to deliver smooth response, stable idle and decent fuel economy. On the D-4D diesel, the “throttle” doesn’t control engine speed directly like a petrol, but the ECU still needs precise plate position for EGR flow control, emissions, and gentle engine shut-off. Either way, a clean, accurate TPS signal is crucial for driveability and emissions.

What owners usually notice when things aren’t right are harsh or lazy throttle response, hunting or high idle, stalling when coming to a stop, poor economy, or a check engine light. A scan will often show P0120/P0121/P0122/P0123 (and related) codes. Before ordering parts, it’s smart to check the connector for corrosion, make sure the loom isn’t chafed, and confirm live data with a scan tool.

For servicing, treat the TPS as part of the throttle body assembly. On these Toyotas, the sensor is integrated and generally not sold separately. Good practice at major services is to:

• Inspect the throttle body for carbon build-up and clean the bore and plate carefully with throttle-body-safe cleaner (don’t flood the sensor).
• Verify throttle angle and accelerator pedal readings with a scan tool, they should change smoothly with no dropouts.
• After cleaning or replacement, perform an idle/throttle learn with a suitable scan tool (or follow Toyota’s key-on learning procedure) and clear any stored DTCs.

If replacement is needed, go with a quality throttle body assembly and a new gasket. Torque the fasteners correctly, check for vacuum leaks, and recheck live data and idle quality on the road test. Diesel owners should also ensure the EGR passages aren’t excessively sooted up, as that can make the TPS look guilty when it’s really airflow restriction causing the drama.

Does a 2009 Toyota Fortuner have a TPS?

It does. The 2TR-FE petrol uses ETCS-i with a throttle body that houses the motor and position sensor. The D-4D diesel has a motorised intake throttle valve with a position sensor for EGR and shutdown control. Both are monitored by the ECU and can log TPS-related fault codes if the signal goes out of spec.

What are the common symptoms of a failing TPS on this model?

Drivers may notice erratic or high idle, flat spots, surging, stalling on decel, poor fuel economy, or a check engine light. Scan tools often show P0120–P0124/P0220–P0223, or a throttle angle that jumps around instead of changing smoothly as the pedal is pressed.

Can the TPS be replaced separately, or is it part of the throttle body?

On most 2009 Fortuner variants it’s integrated into the throttle body assembly. That means replacement typically involves the full throttle body. Before replacing, confirm wiring integrity and connector condition, clean the bore/plate carefully, and perform an idle/throttle learn after any work.