Parts for your 2013 Daihatsu Bego-Throttle position sensors

2013 Daihatsu Bego throttle position sensor (TPS)

Yes, the 2013 Daihatsu Bego uses a throttle position sensor. Technical sources for the J200/J210 platform (Toyota Rush/Daihatsu Bego) with the 3SZ‑VE engine confirm the throttle body is electronically actuated (ETCS‑i) and contains an integrated throttle position sensor, often with dual tracks for redundancy. This is documented in the Toyota/Daihatsu workshop manual Engine Control – ETCS‑i section, the Daihatsu Electronic Parts Catalogue for J200/J210 (throttle body assembly with built‑in sensor), and the factory diagnostic chart listing DTCs such as P0120–P0124 for throttle position circuit faults.

On this model, the TPS tells the engine control module exactly how far the throttle plate is open. That data lets the ECU manage fuel, ignition timing and idle speed, and it’s cross‑checked against the accelerator pedal position sensor for safety. If the two don’t agree, the ECU can drop the car into limp mode to protect the engine and driver.

Because the TPS is integrated into the throttle body on the 3SZ‑VE, it’s generally not serviced separately. If the sensor fails, the usual fix is replacing the entire throttle body assembly. Common signs it’s playing up include erratic idle, hesitation, poor economy, a dead spot on light throttle, or a check‑engine light with a throttle angle or correlation code.

• Servicing tip: Clean the throttle bore and plate every 40–60,000 kilometres using throttle‑body safe cleaner. Don’t drown the unit or spray directly into the motor/sensor housing.
• Electrical checks: A scan tool should show two throttle angle signals that change smoothly and track each other. Flat spots or mismatched angles point to internal sensor issues.
• Replacement: Use a quality OEM‑spec throttle body, a new gasket, and correct torque on the mounting bolts. After fitting, perform an idle/throttle learn with a capable scan tool, or follow the factory idle relearn drive cycle so the ECU relearns the stops.
• Battery disconnects can reset learned values, a brief rough idle after reconnection is normal until the ECU relearns.

If a workshop finds correlation faults between the accelerator pedal and throttle angle, they’ll also check for wiring damage and connector corrosion under the bonnet. Sorting those basics can save replacing parts unnecessarily.

For a 2013 Bego that’s driven daily, adding throttle body inspection and light cleaning to regular servicing will keep throttle response crisp and help avoid limp‑mode surprises.

Does a 2013 Daihatsu Bego actually have a separate TPS?

It has a throttle position sensor, but it’s built into the electronic throttle body rather than being a separate, adjustable sensor. Diagnosis and replacement are handled at the throttle body assembly level.

What symptoms point to a dodgy TPS on a 2013 Bego?

Look for unstable idle, hesitation off the line, poor fuel economy, or a check‑engine light with codes like P0120–P0124. A scan tool may show throttle angle signals that don’t move smoothly or don’t agree with the accelerator pedal readings.

After replacing the throttle body, does it need calibration?

Yes. Perform a throttle/idle learn with a proper scan tool, or follow the factory idle relearn procedure. Until that’s done, idle speed and throttle response can feel a bit off.