Parts for your 2009 Suzuki Splash-Map sensor

2009 Suzuki Splash MAP Sensor: What it does and how to look after it

Technical references including the Suzuki service manual for K10B/K12B engines, Suzuki’s Electronic Parts Catalogue (listing “Sensor, Manifold Absolute Pressure” on the intake manifold), and diagnostic libraries such as Autodata/AllData (with DTCs P0106–P0108 for Splash/Agila B) confirm that the 2009 Suzuki Splash runs a MAP sensor. It’s a speed‑density system, so the MAP sensor is central to fuelling and ignition control on both the 1.0 K10B and 1.2 K12B engines.

The MAP (Manifold Absolute Pressure) sensor measures the pressure inside the intake manifold so the ECU can calculate how much air the engine’s actually breathing. Paired with intake air temperature and engine speed, it helps the Splash nail the right fuel pulse and spark timing. The result: smooth idle, decent fuel economy, cleaner emissions, and good throttle response around town and on the motorway.

On the Splash, the MAP sensor sits on the intake manifold with a 3‑pin plug and an O‑ring seal. It’s not a routine replacement item, but it pays to give it some love during scheduled servicing. At around 40,000–60,000 km intervals, a quick visual once‑over under the bonnet is worthwhile: check the connector for corrosion, make sure the wiring’s not chafed, and confirm the sensor is seated square with its O‑ring intact. If there’s an external vacuum hose on your variant, inspect it for splits or oil soak.

Common signs it’s unhappy include rough idle, flat spots on light throttle, heavy fuel use, black smoke, or the check‑engine light with codes like P0106, P0107, or P0108. Before swapping parts, ensure there are no intake leaks and the throttle body and PCV system aren’t gunking the manifold.

• Cleaning: If contamination’s suspected, remove the sensor and gently mist the port with quality electronics/contact cleaner. Don’t poke the sensing element and let it air dry fully.
• Replacement: Use an OEM‑quality unit, fit a fresh O‑ring, and snug the mounting bolt(s) evenly—no gorilla torque. Reconnect the plug, clear fault codes, and take a brief drive to let trims settle.
• Prevention: Keeping the air filter, PCV, and throttle body clean reduces oil vapour and soot that can foul the MAP.

Handled this way, the Splash’s MAP sensor quietly gets on with its job, helping the little Suzuki stay frugal and easy to live with across Aussie and Kiwi conditions.

Popular questions about the 2009 Suzuki Splash MAP sensor

Where is the MAP sensor on a 2009 Splash?
It’s mounted on the intake manifold, typically on the upper side toward the throttle body, with a single retaining bolt and a 3‑pin connector. Look for a small rectangular sensor sitting flush with an O‑ring seal. Access is straightforward once the engine cover (if fitted) is off.

This position lets it read true manifold pressure, so the ECU can react instantly to throttle changes—handy for stop‑start city driving.

What fault codes point to a MAP sensor issue?
Expect P0106 (MAP/Baro range/performance), P0107 (low input), or P0108 (high input). These can be caused by the sensor itself, wiring faults, or vacuum/intake leaks skewing the readings.

Always confirm power, ground, and signal integrity with a multimeter or scan‑tool live data before replacing the sensor.

Can the Splash run with the MAP sensor unplugged?
It may start and limp using default values, but it’ll run poorly with rough idle, weak performance, and extra fuel burn. Prolonged driving like that isn’t recommended.

Sort the fault, clear the codes, and let the ECU relearn with a short, mixed drive so it can fine‑tune fuel trims.