Parts for your 1993 Suzuki Jimny-Throttle position sensors

1993 Suzuki Jimny throttle‑position sensor: is it used, and does your one have it?

Short answer for Australia and New Zealand–delivered vehicles: the 1993 Suzuki Jimny/Sierra (SJ413, 1.3‑litre carburetted G‑series) does not use a throttle‑position sensor (TPS). This is backed by the Suzuki SJ413/Sierra Service Manual (publication 99500‑83A10‑01E) and Gregory’s Suzuki Sierra 1982–1998 (No. 511), which detail a mechanical carburettor, vacuum/centrifugal ignition advance, and no TPS in the wiring or sensor lists. By contrast, the Japanese‑market 1993 Jimny JA11 (660 cc F6A EFI turbo) does use a TPS, as documented in the Suzuki Jimny JA11 Factory Service Manual (99500‑81A60‑01E) and the Suzuki Electronic Parts Catalogue for JA11, which lists a “Throttle Position Sensor” on the throttle body. So, whether a TPS is relevant depends on the exact variant in your driveway.

Why the AU/NZ 1993 Sierra doesn’t have a TPS comes down to its carburetted fuel system. Fuel delivery and mixture are handled mechanically inside the carb, and ignition timing is managed by vacuum and centrifugal advance in the distributor. There’s no engine control unit that needs a throttle angle signal, so Suzuki didn’t fit a TPS to these models. You might see vacuum switches, a throttle opener/dashpot, or an A/C idle‑up device on some trims, but those aren’t electronic TPS units.

Plenty of 1993 Jimnys in NZ and Australia are grey‑imports from Japan. If yours is a JA11 or another EFI model, it will have a TPS mounted on the end of the throttle shaft, typically with a three‑wire plug feeding the ECU. That sensor lets the ECU know how quickly and how far the throttle is opening, which sharpens fuelling, timing, and idle control.

• Likely no TPS: AU/NZ‑delivered 1993 Sierra SJ413, 1.3 carb (G13A/G13BA), per SJ413 Service Manual and Oceania EPC.
• Has TPS: JDM 1993 Jimny JA11 (F6A EFI turbo), per JA11 FSM and JDM EPC listings.

Quick ways to tell what you’ve got under the bonnet:

• Carburettor top with no injector wiring and no three‑wire plug on the throttle shaft = no TPS.
• Throttle body with injector(s) and a three‑wire sensor on the throttle shaft = TPS present.
• VIN/Frame codes: SJ413/Sierra (typically no TPS), JA11 (TPS with EFI).

Technical sources referenced: Suzuki SJ413/Sierra Service Manual 99500‑83A10‑01E, Gregory’s Suzuki Sierra 1982–1998 (No. 511), Suzuki Jimny JA11 Factory Service Manual 99500‑81A60‑01E, Suzuki Electronic Parts Catalogue entries for SJ413 (Oceania) and JA11 (Japan).

FAQs

Does a 1993 Suzuki Jimny/Sierra in Australia or New Zealand have a TPS?
Factory‑delivered AU/NZ Sierras (SJ413, carburetted 1.3) don’t have a TPS. If the vehicle is a Japanese‑import JA11 (EFI), then yes, it has a TPS on the throttle body. Checking the frame code and looking for a three‑wire sensor on the throttle shaft will confirm it quickly.

How can I confirm whether my 1993 Jimny actually needs a TPS?
Pop the air cleaner off and look at the throttle shaft. A TPS will be a small black sensor with a three‑wire connector on the end of the shaft. No sensor and only mechanical linkages to a carb means no TPS. You can also check the wiring diagram in the correct workshop manual for your frame code (SJ413 vs JA11).

Can I retrofit EFI (and a TPS) to my carburetted 1993 Sierra?
It’s doable but not a quick Saturday job. You’ll need an EFI manifold or throttle body, ECU, full engine loom, fuel pump and lines, sensors (including TPS), and proper tuning. Many owners opt for a complete engine/loom swap (e.g., G13BB) or an aftermarket EFI kit, but budgeting for certification and compliance in NZ/AU is wise.