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Parts for your 2012 Suzuki Splash-Throttle position sensors
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2012 Suzuki Splash throttle position sensor (TPS)
On the 2012 Suzuki Splash, a throttle position sensor is absolutely used and relevant. Suzuki’s factory service information for the K10B and K12B petrol engines describes an electronically controlled throttle body with an integrated dual-track TPS and actuator motor. The Suzuki electronic parts catalogue also lists the throttle body as an assembly with the sensor built in, rather than a separate, bolt‑on sensor. For markets with the 1.3 DDiS diesel, the system includes a throttle valve with position feedback plus an accelerator pedal position sensor. These details are consistent with Bosch electronic throttle control used on Suzuki K‑series engines. Taken together, those technical sources confirm the Splash relies on TPS feedback for engine management.
For a 2012 Suzuki Splash, the TPS is the throttle body’s “eyes”, telling the engine computer exactly how far the butterfly is opened. With drive‑by‑wire on the K‑series petrol engines, it’s actually a pair of position tracks inside the throttle body, so the ECU can cross‑check them for accuracy. That clean signal helps the Splash idle smoothly, pull away without hesitation, and keep fuel use tidy across Aussie and Kiwi roads.
When the TPS goes out of whack, the Splash can feel doughy off the line, flare idle, or drop into limp mode, often lighting the check‑engine lamp with codes like P0120–P0124 or P2135. Because the sensor is built into the throttle body, most repairs involve replacing the complete assembly rather than the sensor on its own.
As part of regular servicing, a few easy wins keep the TPS and throttle body happy:
- Inspect the throttle body electrical connector for corrosion or a loose fit, especially after high‑kilometre, dusty use.
- Clean the throttle bore and plate using a throttle‑safe aerosol, avoid soaking the electronics or forcing the plate by hand.
- Check battery health and grounds — low voltage can cause odd TPS behaviour.
When replacement is needed, it pays to:
- Use a quality throttle body assembly with the correct Splash calibration.
- Fit a new gasket and follow the workshop torque spec.
- Perform a throttle/idle relearn with a capable scan tool so the ECU recognises the new sensor tracks. A short road test with varied throttle after relearn helps the trims settle.
A shop with Suzuki tooling or a good aftermarket scan tool can also live‑graph the two TPS tracks to confirm a smooth, matching signal before calling a new part. Treated well, the Splash’s TPS setup is a set‑and‑forget item for many years and kilometres.
Popular questions
Does a 2012 Suzuki Splash have a throttle position sensor?
Yes. The petrol K10B/K12B engines use an electronic throttle body with an integrated, dual‑track TPS. The diesel DDiS variant also uses throttle valve position feedback (plus an accelerator pedal sensor). It’s an essential input for fuelling, ignition timing, and idle control.
Can the TPS be replaced separately on a Splash, or is it part of the throttle body?
On the 2012 Splash petrol engines, the TPS is built into the throttle body and isn’t serviced as a stand‑alone sensor. If the TPS signal is faulty and wiring checks out, the usual fix is replacing the complete throttle body assembly and carrying out a throttle/idle relearn.
What are the signs the TPS is failing on a Splash?
Common giveaways include a check‑engine light, sluggish throttle response, hunting or high idle, stalling when coming to a stop, and limp‑home behaviour. Scan tools often show DTCs like P0120–P0124 or P2135, and live data may reveal a jumpy or mismatched TPS signal.
