Parts for your 2002 Daihatsu Yrv-Map sensor

2002 Daihatsu YRV MAP Sensor — What It Does and How to Look After It

The 2002 Daihatsu YRV is fitted with a MAP (Manifold Absolute Pressure) sensor. This is confirmed by technical references including the Daihatsu YRV workshop manual’s engine control (EFI) diagrams, the Toyota/Daihatsu Electronic Parts Catalogue entries for the YRV (M2-series) listing a “Sensor, Manifold Absolute Pressure,” and DENSO’s application catalogues identifying a MAP/boost sensor for both the 1.3 K3-VE and the 1.3 turbo K3-VET. On the turbo model, the same sensor also functions as a boost pressure input.

On a 2002 YRV, the MAP sensor tells the ECU exactly how much pressure (or vacuum) is in the intake manifold so it can meter fuel, set ignition timing, and manage idle and, on the turbo, control boost. That means better drivability, decent fuel economy, and lower emissions. It’s a small part, but it has a big say in how the YRV behaves on the road.

When a MAP sensor starts to drift or fail, the YRV can feel flat or thirsty. Common signs include:

• Hesitation, rough idle, or stalling
• Higher fuel use or black smoke on hard accel
• Check Engine Light with codes like P0105–P0108

There’s no strict replacement interval, but it’s smart to inspect it during regular servicing (every 40,000–60,000 kilometres, or if symptoms appear). Checks worth doing:

• Look for cracked, loose, or oil-soggy vacuum hoses if the sensor is remote-mounted, if it bolts straight into the manifold, inspect the O-ring and seating.
• Confirm the electrical connector is clean, tight, and free of corrosion.
• Make sure there are no intake or boost leaks and that the throttle body and PCV system aren’t gummed up.

Cleaning is possible with electronics-safe sensor cleaner — a light spray on the port is fine, but don’t poke anything into the sensor. If replacement is needed, it’s typically a simple unplug-and-swap job: disconnect the battery, remove the connector and fasteners, transfer the O-ring if required, refit, then clear any fault codes and let the ECU relearn at idle. On the turbo YRV, always verify all boost hoses and clamps are sound, as leaks can mimic a bad MAP.

Quality matters here. Using a reputable OEM-equivalent MAP sensor keeps the K3 engine crisp, helps avoid nuisance fault codes, and saves fuel in everyday Aussie and Kiwi driving.

Popular questions

Where is the MAP sensor on a 2002 Daihatsu YRV?
On most YRV models it’s either bolted to the intake manifold with an O-ring seal or mounted on a nearby bracket and connected via a short vacuum hose to the manifold. The turbo version also uses it as a boost sensor, so expect it to be close to the intake plumbing for a clean pressure signal.

Can you drive a 2002 YRV with a bad MAP sensor?
It will usually run, but it may be sluggish, use more fuel, and trigger a Check Engine Light. Prolonged driving with incorrect fuelling can foul plugs and catalytic converters, so it’s best to diagnose and fix the issue sooner rather than later.

How do you test a YRV MAP sensor?
Scan tool data is the easiest check: with ignition on/engine off, MAP should show near local barometric pressure, at hot idle it should drop to a steady vacuum value. You can also verify the 5V reference, ground, and signal voltage with a multimeter. Any vacuum leaks need sorting before judging the sensor.