Parts for your 2000 Suzuki Jimny-Throttle position sensors

2000 Suzuki Jimny throttle-position-sensors (TPS): what they do and when to replace them

Yes, the 2000 Suzuki Jimny is fitted with a throttle position sensor (TPS). Technical sources confirming this include: the Suzuki Jimny SN413 Service Manual (Section 6E – Engine/Emissions), which details the TPS circuit and related OBD-II codes P0120–P0124, the Suzuki Electronic Parts Catalogue (EPC) listing a TPS on the throttle body for G13BB/M13A Jimny models (e.g., TPS part family 13420-77E10/86G00 depending on engine/market), and Autodata technical specs noting a closed-to-wide-open sweep of roughly 0.5–4.5 V on the Jimny’s TPS. These references make the TPS clearly relevant and present on the 2000 model.

On the 2000 Jimny, the TPS lives on the side of the throttle body and tells the engine control unit how far the throttle plate is open. That info helps the ECU sort fuelling, ignition timing and idle control, so the little 1.3 runs crisply whether it’s puttering around town or climbing a rutted track. Because this Jimny uses a cable-operated throttle (not drive-by-wire), the TPS is the ECU’s eyes on your right foot.

Typical clues that a TPS is going out include a lumpy idle, flat spots on take-off, random surging, poor fuel economy, harsh or odd shifts on autos, and a check-engine light. Common fault codes are P0120–P0124. Before throwing parts at it, a quick diagnosis helps: with a scan tool, look for a smooth throttle percentage increase from closed to wide open. With a multimeter back-probed to the signal wire, expect about 0.5–0.7 V closed and around 4.0–4.5 V wide open, with no dead spots as you move the throttle by hand.

There’s no set replacement interval for a TPS—it’s a replace-when-faulty item—but it does benefit from sensible servicing habits:

• Keep the throttle body clean. Grime around the plate can mess with idle airflow and make the TPS look guilty.
• Check and adjust base voltage after fitting. The Jimny’s TPS is slotted, lightly rotate it to achieve about 0.5–0.7 V closed-throttle (confirm with service data for your exact engine code).
• Use the right screwdriver (JIS/quality bits) to avoid chewing the small mounting screws.
• Clear DTCs and perform an idle learn: warm the engine, then let it idle with all loads off for a few minutes so the ECU can settle.

Replacement is straightforward under the bonnet: remove the intake snorkel, unplug the 3-pin connector, undo the two screws, swap the sensor, set the base voltage, and nip everything back up. A fresh gasket or O-ring (if applicable) and a gentle hand on the screws will save grief down the track.

Popular questions about 2000 Suzuki Jimny throttle-position-sensors

Where is the throttle position sensor on a 2000 Suzuki Jimny?
The TPS is bolted to the side of the throttle body, opposite the throttle cable pulley. Look just under the intake hose, it’s a small black plastic unit with a 3-pin plug. Removal is easiest after taking off the intake snorkel.

Do I need to calibrate the TPS after replacement?
Yes. Loosen the slotted mounting screws and rotate the sensor to set the closed-throttle voltage to roughly 0.5–0.7 V (or use a scan tool to aim for 0–2% TP at closed throttle). Tighten the screws, clear codes and carry out an idle learn so the ECU adapts.

Can a faulty TPS be cleaned instead of replaced?
The TPS itself is a sealed unit and isn’t serviceable. Cleaning the throttle body is worthwhile, but if the TPS has dead spots or erratic output, replacement is the proper fix.