Parts for your 2013 Suzuki Splash-Throttle position sensors

2013 Suzuki Splash throttle position sensor (TPS): what it does and how to look after it

Yes, the 2013 Suzuki Splash does use a throttle position sensor, and it’s very relevant to how the little Suzuki runs. Technical references including the Suzuki Splash service manual for the K10B/K12B engines and Suzuki’s electronic parts catalogue show an electronic throttle body assembly fitted to this model, with dual TPS elements integrated into the housing. The sister car (Opel/Vauxhall Agila B) lists the same style electronic throttle body, again with built‑in throttle position sensing. So, this Splash is very much a TPS‑equipped, drive‑by‑wire setup.

On this model, the TPS is part of the electronic throttle control. It tells the engine computer exactly where the throttle plate is, so fuelling, ignition timing, idle speed control, and emissions strategies stay on point. The ECU also cross‑checks the TPS against the accelerator pedal position sensor for safety and smooth throttle behaviour.

Because the TPS is integrated into the throttle body, “replacing the TPS” usually means replacing the entire throttle body assembly. That sounds big, but it’s straightforward for a qualified tech and often the most reliable fix, as the sensor is factory‑matched and sealed.

Typical signs the Splash’s TPS/throttle body is on the way out include:

• Erratic idle, stalling at lights, or a hunting idle
• Flat spots, surging, or hesitant take‑off
• Reduced power (limp mode) and a glowing MIL
• Fault codes such as P0120–P0124, P2135, or similar correlation errors

Good servicing habits help. During routine maintenance, it’s smart to:

• Scan for stored or pending codes, even if no light’s on
• Inspect the throttle body for carbon build‑up, clean the bore and plate with proper throttle cleaner (battery disconnected, no forcing the plate)
• Check the harness and connector for moisture or pin tension issues
• Perform a throttle/idle relearn with a scan tool after cleaning or replacement, as per the Suzuki service manual

If replacement’s needed, use quality parts that match the Splash’s engine code, fit a fresh gasket or O‑ring, and torque fasteners correctly. After installation, clear codes and carry out the adaptation procedure so the ECU knows the new throttle’s home position. A brief road test to verify smooth tip‑in, stable idle, and correct throttle tracking seals the deal. Looked after this way, the Splash’s throttle body and its TPS sensors will clock up plenty of reliable kilometres.

Where is the TPS on a 2013 Suzuki Splash?

It’s built into the electronic throttle body on the intake manifold. You won’t see a separate, bolt‑on sensor, the unit is sealed and includes dual TPS tracks. Access is from the top/front of the engine bay, with an electrical connector on the throttle body.

A parts lookup for the K10B/K12B engines and the Suzuki service manual both show the TPS as part of the throttle body assembly, not a standalone component.

Do I need to calibrate or relearn the TPS after work on the throttle?

Yes. After cleaning the throttle body or replacing it, a throttle/idle relearn should be performed with a suitable scan tool. This lets the ECU store the correct closed and open positions. Skipping the relearn can leave the Splash with an unstable idle or delayed throttle response.

Some vehicles will self‑adapt over a few key cycles, but the proper relearn is the reliable way to go.

What symptoms point to a failing TPS on this Splash?

Common clues are an erratic or high idle, stalling when coming to a stop, throttle hesitation, sudden surging, or the car dropping into limp mode. The check engine light may show with codes like P0120–P0124 or P2135 indicating TPS range or correlation issues.

Before replacing parts, it’s worth ruling out intake air leaks, dirty throttle plates, and wiring/connector faults, as these can mimic sensor problems.