Parts for your 2016 Suzuki Splash-Temperature sensors

2016 Suzuki Splash temperature-sensors

Based on Suzuki factory service literature for the Splash/Ritz (engine control and cooling system sections), Autodata service specifications, and Bosch NTC sensor technical notes, temperature sensors are absolutely fitted to and used by the 2016 Suzuki Splash. They’re essential inputs for the ECU, the instrument cluster, and the climate system, so the part is relevant for this model year.

On this Splash, the key temperature-sensors include the Engine Coolant Temperature (ECT) sensor, the Intake Air Temperature (IAT) sensor (often integrated into the MAF or MAP body depending on engine variant), and an Ambient Air Temperature sensor for the HVAC and outside-temp display. Auto transmissions may also monitor fluid temperature. The ECT is the star of the show: it tells the ECU how warm the engine is so it can adjust fuelling and ignition, manage cold starts, and switch the radiator fan. IAT helps the ECU correct for air density on hot or frosty days, while the ambient sensor keeps the air-con behaving as it should and feeds the dash readout. Diesel DDiS variants also use temperature inputs for glow control and, in some cases, fuel temp management.

These sensors aren’t routine replacement items, but they do deserve a check during servicing—especially whenever coolant is changed, a thermostat is replaced, or drivability niggles pop up. Typical clues a temperature sensor (most often the ECT) needs attention include:

• Hard cold starts, high idle, or rich running with poor fuel economy
• Cooling fan running constantly or not at all
• Temp gauge behaving oddly or a Check Engine Light with codes like P0115–P0119

Quick workshop tips: scan live data from cold and confirm the ECT and IAT read close to ambient under the bonnet, compare both sensors while warming up—they should climb smoothly with no jumps. If numbers look wrong, back it up with a resistance check against the service chart and inspect the connector and wiring for corrosion or breaks.

When replacing, use quality OEM-equivalent parts. If the ECT threads into the housing, only use sealant if the service info specifies it (many sensors rely on a crush washer or tapered seat). Top up and bleed the coolant properly, clear fault codes, and perform a normal warm-up drive so the ECU can relearn trims. A quick visual and data check at each coolant change interval will help keep the Splash running sweet and the fan cycling as it should.

Where is the coolant temperature sensor on a 2016 Suzuki Splash?

It’s typically mounted in or near the thermostat housing on the cylinder head, close to the upper radiator hose. Look for a small two-pin (sometimes three-pin) connector. On diesel DDiS variants the exact position can differ slightly but remains on the housing or head for direct coolant contact.

Can a faulty temperature sensor cause the fan to run all the time or hurt fuel economy?

Yes. If the ECT circuit is open, the ECU can see a very low temperature and enrich fuelling, burning more petrol. If it’s shorted, it may read very hot and command the cooling fan continuously as a failsafe. Either fault can trigger a Check Engine Light and rough running.

Do I need coding after replacing the ECT sensor?

No coding is normally required. Clear any fault codes, top up and bleed the cooling system, then complete a normal drive cycle so the ECU can settle trims. If idle learn is specified in the service info, follow that procedure.