Parts for your 2005 Suzuki Swift-Throttle position sensors

2005 Suzuki Swift throttle position sensor (TPS): what it does and when to replace it

Technical sources including the Suzuki Swift MZ/EZ (2005–2010) workshop manual (Engine Control System), Autodata/Repco service information, and OEM parts catalogues for the M13A/M15A petrol engines confirm that the 2005 Suzuki Swift is fitted with a throttle position sensor. On these petrol models the TPS is built into the electronic throttle body and monitored by the ECM, with fault codes such as P0120–P0124 and P0220–P0223 recorded if readings are out of range. That makes the TPS very much relevant to the 2005 Swift’s drivability and emissions.

On a 2005 Swift, the TPS tells the engine computer exactly how far the throttle plate is open. It’s a key input for fuelling, ignition timing, idle control, and cruise control. Because the Swift runs a drive-by-wire throttle on its petrol engines, the TPS works alongside the accelerator pedal sensor, providing a smooth, redundant signal so the ECM can command the throttle motor with confidence. Under the bonnet, it lives on the throttle body at the front of the intake manifold, on most Aussie and Kiwi models it’s integrated rather than a separate bolt-on part.

When a TPS goes flaky, the Swift can feel doughy off the line or surge and hunt at idle. Common clues include a check engine light, limp-home behaviour, flat spots on acceleration, poor fuel economy, and erratic or high idle. A scan with a proper diagnostic tool will usually show a rough or jumping throttle angle trace instead of a clean sweep.

There’s no scheduled maintenance for the TPS itself, but it pays to keep the throttle body clean and the connector pins dry and tight. If the TPS is integrated (as on most 2005 petrol Swifts), replacement means swapping the throttle body assembly, fitting a new gasket, torquing the bolts to spec, and performing a throttle/idle learn with a scan tool. If your specific variant has a separate sensor, it’s a straightforward remove-and-refit job: battery disconnected, sensor off, align the drive tang, nip the screws, reconnect, clear codes, and run a learn procedure. Avoid soaking the sensor with cleaners—only clean the throttle bore with a suitable intake cleaner. A quick health check during servicing—graphing the TPS signal, confirming smooth percentage change, and checking for any stored DTCs—can save a lot of stop–start grief and keep the Swift feeling crisp around town and on the open road.

• Typical symptoms: hesitation, surging/hunting idle, stalling, CEL, limp mode, poor economy
• Typical codes: P0120–P0124, P0220–P0223
• Service tip: perform throttle/idle learn after replacement or battery disconnection

Popular questions

Does a 2005 Suzuki Swift have a TPS or is it part of the throttle body?

Yes, it has a TPS. On most 2005 Swift petrol models (M13A/M15A), the TPS is integrated into the electronic throttle body along with the throttle actuator. That means you typically replace the throttle body assembly rather than the sensor by itself.

What are the tell-tale signs the TPS is failing on a 2005 Swift?

Expect a check engine light, uneven or high idle, flat spots on take-off, poor fuel use, and sometimes limp-home. A scan tool will often show erratic throttle angle data and store codes like P0120–P0124. If those show up, further testing is a good idea before replacing parts.

Does a new TPS need calibration on a 2005 Swift?

There’s no manual adjustment. After fitting, use a scan tool to perform throttle and idle relearn, or follow the OEM learn procedure for the MZ/EZ Swift. This lets the ECM store correct closed and open positions so it can control idle speed and throttle response properly.