Parts for your 2001 Daihatsu Yrv-Throttle position sensors

2001 Daihatsu YRV Throttle Position Sensor (TPS)

Based on the Daihatsu YRV workshop manual for the M2 series (covering K3-VE and K3-VET engines), the Electronic Fuel Injection section specifies a throttle position sensor mounted on the throttle body. The Daihatsu Electronic Parts Catalogue for M201/M211 chassis likewise lists “Sensor, Throttle Position” for 2000–2005 YRV models. Denso EFI reference material and the model’s OBD-II fault set (including TPS-related codes P0120–P0123) further confirm the presence and role of a TPS. So for a 2001 Daihatsu YRV, the throttle position sensor is absolutely relevant and fitted from factory.

The 2001 Daihatsu YRV runs a cable-operated throttle body with a Denso-style throttle position sensor. The TPS tells the ECU exactly how far the throttle plate is opened, so the engine can get the right fuel and ignition timing for smooth take-off, crisp mid-range and tidy emissions. It also helps idle stability and, on auto models, informs shift timing and line pressure. When the TPS gets tired, expect flat spots, a hunting idle, poor fuel economy, or the odd harsh shift, often with the check engine light and codes like P0121 or P0122.

It’s not a consumable, but it deserves attention during regular servicing. Under the bonnet, inspect the TPS connector for broken locks, corrosion or oil intrusion every 20,000–30,000 kilometres. A quick scan of live data should show a clean sweep from roughly 0.5 V at closed throttle to about 4.2–4.5 V at wide open, any dead spots or jumps point to a worn track. Keep the throttle body clean, but don’t drown the sensor in solvent—use throttle cleaner sparingly and avoid the TPS housing.

Replacement is straightforward. Disconnect the battery, unplug the three-pin connector, and undo the two small screws (use a JIS screwdriver or an impact driver to avoid stripping). Fit the new sensor and gently rotate it to set base voltage near 0.48–0.52 V at closed throttle, with the idle switch circuit closed—this adjustment is outlined in the Daihatsu service manual. Nip the screws to around 3–4 N·m, reconnect, clear any codes, then perform an idle relearn: warm the engine, A/C off, let it idle a few minutes, and take a short road test. If a scan tool is handy, confirm a smooth voltage ramp and stable idle position. With a sound TPS and a clean throttle body, the YRV feels far more eager and predictable around town and on the open road.

• Common symptoms: erratic idle, flat spots, surging, poor economy, harsh shifts, and TPS fault codes.
• Service tips: check connector integrity, verify live-data sweep, avoid solvent on the sensor, and calibrate voltage on installation.

Popular questions about 2001 Daihatsu YRV throttle position sensors

Where is the TPS on a 2001 YRV and how do you get to it?
The TPS is bolted to the throttle body on the intake manifold side, under the bonnet. It’s a small black sensor with a three-pin plug. Remove the intake duct, unplug the connector, and you’ll see two small mounting screws. Access is tight but manageable with a stubby JIS screwdriver. Always disconnect the battery before removal.

Does a new TPS need calibration on the YRV?
Yes—after fitting, rotate the sensor slightly to set the closed-throttle voltage near 0.5 V and ensure the idle switch is closed. This ensures smooth tip-in and stable idle. Finish with an idle relearn and clear any stored codes. A scan tool makes the process quicker and more accurate.

What faults point to a failing TPS on this model?
Look for fault codes P0120–P0123, an unstable idle, sudden dropouts in throttle response, or a live-data voltage trace that spikes or flattens mid-sweep. If cleaning the throttle body and verifying the connector don’t help, the sensor is usually due for replacement.