Parts for your 2001 Daihatsu Gran move-Map sensor

2001 Daihatsu Gran Move MAP sensor — what it does and how to look after it

Yes, the 2001 Daihatsu Gran Move (also sold as the Pyzar) uses a MAP sensor. Factory documentation for the G303/G313 series EFI system identifies a Manifold Absolute Pressure sensor as part of the Denso engine management package (Daihatsu Gran Move/Pyzar Workshop Manual, Engine Electrical—EFI). Industry data tools list load sensing as MAP-based (Autodata Technical Data for Daihatsu Gran Move 1.5/1.6, Denso EFI), and Denso’s own engine control fundamentals describe the speed–density strategy used on these engines, where a three‑pin MAP sensor and an intake air temp sensor help the ECU calculate air mass.

On this model, the MAP sensor is a small Denso unit fed by a vacuum hose from the intake manifold and a three‑wire plug (5 V reference, signal, ground). It lets the ECU “see” engine load so it can set fuelling and ignition timing properly, and it also helps with altitude correction. Under the bonnet, it’s typically mounted on the firewall, strut tower or directly on the manifold with a short hose.

Typical signs it’s not happy include rough idle, doughy throttle response, sootier exhaust, or higher fuel use. The check engine light may throw codes like P0105–P0108. A quick scan check: key-on engine-off should read close to local barometric pressure, at hot idle you’ll usually see low kPa (vacuum) and the signal voltage around 0.8–1.6 V, rising smoothly with throttle.

Servicing is simple and worth doing every 20,000–40,000 km: inspect the vacuum hose for splits or oil contamination, make sure the electrical connector is snug and clean, and confirm the sensor port isn’t clogged. If the hose is soft, brittle or oily, replace it—vacuum leaks mimic a bad sensor. When cleaning, use electronics-safe cleaner, don’t poke the sensing port.

Replacing the MAP sensor on a 2001 Gran Move is straightforward: disconnect the plug, remove the small screws or unclip the bracket, swap the unit, and refit the hose without kinks. Clear fault codes and take a short drive so the ECU can relearn trims. Genuine or quality OEM-equivalent Denso parts usually give the best long-term results in Aussie and Kiwi conditions.

• Common MAP-related OBD-II codes: P0105 (MAP/Baro circuit), P0106 (range/performance), P0107 (low input), P0108 (high input).
• Quick DIY check: compare key-on MAP kPa to local weather barometric pressure, they should be close at sea level.

Technical sources: Daihatsu Gran Move/Pyzar (G303/G313) Workshop Manual, Engine Electrical—EFI (MAP sensor description and diagnostics), Autodata Technical Data (load sensing: MAP, Denso EFI), Denso Engine Control Systems fundamentals (speed–density MAP strategy).

Popular questions

Does the 2001 Daihatsu Gran Move use a MAF or a MAP?
It uses a MAP sensor within a Denso speed–density system, not a hot‑wire MAF. Engine load is calculated from manifold pressure, intake air temperature and engine speed.

Where is the MAP sensor on a 2001 Gran Move?
Usually on the firewall or intake manifold area, it’s a small black Denso sensor with a short vacuum hose to the manifold and a three‑pin connector. Trace the small vacuum hose from the manifold and you’ll spot it.

Is it safe to drive with a faulty MAP sensor?
Short trips to a workshop are usually fine, but expect poor fuel economy and sluggish running. Prolonged driving risks fouling the catalytic converter, so it’s best to diagnose and fix it promptly.