Parts for your 2004 Suzuki Jimny-Map sensor

2004 Suzuki Jimny MAP sensor: what it does and how to look after it

Based on technical references including the Suzuki Jimny Service Manual for the M13A engine (Engine Control System section listing the Manifold Absolute Pressure/“Boost” sensor), the Suzuki Electronic Parts Catalogue for 2004 model codes, and the Jimny OBD‑II fault code set (P0105–P0108 defined for MAP circuits), the 2004 Suzuki Jimny is fitted with and relies on a MAP sensor. It’s a core input to the engine control unit on this model.

The MAP sensor measures absolute pressure inside the intake manifold in kilopascals. The ECU pairs that signal with intake air temperature and engine speed to calculate air mass by a speed‑density strategy. That’s how the Jimny decides fuel delivery and ignition timing, and it also uses the MAP reading for altitude correction—handy whether it’s beach tracks or alpine passes in Aus or NZ. When the sensor or its vacuum path goes off, expect rough idle, flat spots, higher fuel use, hard starting and the odd stall, with a check‑engine light to match.

Servicing the Jimny’s MAP sensor is simple and worth doing on higher‑kilometre vehicles. It’s typically mounted on or near the intake manifold with a short vacuum passage, there’s a three‑pin connector. Keep the vacuum path clean and airtight, the connector pins bright, and avoid oil mist contamination from a tired PCV system. When replacement is needed, stick with quality OEM‑equivalent parts—cheap copies often skew readings and make tuning trims chase their tail.

• Inspect the small hose or manifold port for splits, softness, or carbon/oil build‑up, replace brittle hoses.
• Check the 3‑pin connector for corrosion or loose tension, a dab of dielectric grease helps in coastal climates.
• Clean the sensor port only with electronics‑safe cleaner, don’t poke the sensing element.
• Scan‑tool check: key‑on/engine‑off should read around local barometric pressure (~100 kPa at sea level), warm idle usually falls into the 28–40 kPa band depending on engine condition and altitude.
• After replacement, clear DTCs and let the engine idle for a few minutes, then take a short drive so trims relearn.

Look after the MAP sensor during regular services and the Jimny’s little 1.3 will stay crisp on throttle and kinder on fuel, whether it’s the daily commute or a weekend track.

Popular questions

Where is the MAP sensor on a 2004 Jimny?
On most 2004 Jimnys it’s mounted on or adjacent to the intake manifold near the throttle body, connected by a short vacuum passage and a three‑pin electrical plug. It’s a small rectangular unit on a bracket or directly on the manifold, easy to spot once the engine cover (if fitted) is out of the way.

What fault codes point to a bad MAP sensor on a Jimny?
Common MAP‑related codes are P0105 (MAP/Baro circuit), P0106 (range/performance), P0107 (low input) and P0108 (high input). Before condemning the sensor, rule out split vacuum hoses, oil contamination in the port, poor earths, and connector issues—those are frequent culprits.

Does the 2004 Jimny use a MAF instead of a MAP?
No. The 2004 Jimny with the M13A engine uses a MAP sensor and a speed‑density strategy rather than a mass airflow sensor. That’s why a sound vacuum path and accurate manifold pressure reading are critical on this model.