Parts for your 2001 Suzuki Swift-Throttle position sensors

2001 Suzuki Swift throttle-position-sensor: fitted and what to know

Yes, the 2001 Suzuki Swift uses a throttle position sensor (TPS). This is documented in the Suzuki Swift SF413/SF416 Service Manual (1996–2003) under Engine Control System – Throttle Position Sensor checks and adjustment, and reflected in the Suzuki Electronic Parts Catalogue with TPS part numbers such as 13420-77E00 and 13420-86G00 for G‑series Swift engines of this era. Independent references like Gregory’s Manual 508 (Suzuki Swift 1989–2001) and NTK/NGK aftermarket catalogues also list direct-fit TPS units for 1997–2003 Swifts. These sources confirm the TPS is a standard component on the 2001 Swift’s multi-point fuel-injected petrol engines (e.g., G13BB).

The TPS on a 2001 Suzuki Swift sits on the side of the throttle body, telling the engine control unit how far the driver’s got their right foot into it. That position signal helps the ECU meter fuel, tweak ignition timing, manage idle control, and, on autos, sharpen up kick-down. When it’s healthy, throttle response is crisp and fuel economy stays tidy on open-road kilometres.

Common clues the TPS is crook include a hesitant take-off, flat spots on light throttle, erratic idle, poor fuel economy, or the check-engine light with codes like P0120–P0123. Before blaming the sensor, it’s smart to rule out vacuum leaks and a dirty throttle plate, because those can mimic similar symptoms.

Replacement is pretty straightforward under the bonnet. With the battery negative disconnected, unplug the TPS, remove the two small screws, and lift it off the throttle shaft. Fit the new unit, aligning the tang so it engages the shaft, then snug the screws while you rotate the sensor slightly in its slotted holes to set base position. On many G‑series Swifts, closed-throttle voltage is typically around 0.5 V (check the service data for your exact engine). A scan tool makes life easy—aim for 0% throttle at closed and smooth percentage rise to 100% at wide-open. Don’t wind the throttle-stop screw, that’s factory set.

As part of routine servicing, the TPS isn’t a scheduled replacement item, but a quick health check pays off: ensure the connector’s clean, the loom isn’t brittle, and the live data shows a steady, linear sweep. If the sensor’s worn (jumpy readings or dead spots), swap it out—these are inexpensive and can save you chasing your tail with drivability dramas.

• Handy tip: after any TPS or throttle-body work, perform an idle relearn with a scan tool or follow the manual’s idle learn procedure for a stable, warm idle.

Popular questions about 2001 Suzuki Swift throttle-position-sensors

Does a 2001 Suzuki Swift actually have a TPS?
It does. The factory service manual for SF413/SF416 Swifts lists TPS testing and adjustment, and Suzuki parts catalogues show dedicated TPS part numbers for 2001 models. If it’s multi‑point injected (most are), it will have a TPS on the throttle body.

What symptoms point to a failing TPS on a 2001 Swift?
Drivers often notice hesitation on light throttle, erratic or high idle, a flat spot when accelerating, kick‑down issues in auto models, and the check‑engine lamp. A scan tool may show throttle angle jumping or stuck, and fault codes P0120–P0123 are common.

Do I need to calibrate the new TPS?
Yes, a quick setup is best. With a scan tool, confirm 0% at closed throttle and a smooth climb to 100% at wide open. Without a scan tool, set the sensor so closed-throttle voltage sits near the spec (often around 0.5 V), then road test. Avoid touching the throttle-stop screw.