Parts for your 2008 Toyota Blade-Map sensor

2008 Toyota Blade MAP sensor: what it does and how to look after it

Based on Toyota technical information, the 2008 Toyota Blade does use a MAP (manifold absolute pressure) sensor. Toyota’s Service Information (TIS) for the SFI (Sequential Fuel Injection) system on both Blade engines—the 2AZ-FE 2.4-litre and 2GR-FE 3.5-litre—lists the Manifold Absolute Pressure Sensor as a monitored input. Toyota’s Electronic Parts Catalog for Blade model codes AZE154H (2AZ-FE) and GRE156H (2GR-FE) also shows a “Sensor, Vacuum (MAP)” fitted to the intake manifold, with part numbers in the 89421-0E010 family (supersessions may vary). DENSO’s component literature for late-2000s Toyota SFI systems further describes the MAP sensor’s role alongside the MAF. That’s the evidence needed to treat the Blade’s MAP sensor as a relevant, fitted component.

On this model, the MAP sensor helps the ECU understand real-time load by measuring manifold pressure. Even though the Blade also runs a MAF, the ECU uses the MAP signal for transient fuelling, ignition timing, altitude compensation, and plausibility checks. That keeps throttle response crisp and economy tidy from city runs to open-road driving.

There’s no scheduled replacement interval for the MAP sensor, but a bit of attention at service time can save headaches:

• Visual check: Under the bonnet, the MAP sensor sits on the intake manifold plenum. Make sure the connector is snug, wiring isn’t chafed, and the O-ring isn’t perished.
• Cleanliness: If there’s oil mist in the manifold, a light spray of electronics-safe cleaner on the sensor tip and port can help. Don’t poke tools into the sensing hole and don’t soak it.
• Diagnostics: Rough idle, lazy acceleration, sooty exhaust, or poor fuel economy can point to a lazy MAP. Common fault codes include P0106, P0107, and P0108. Always rule out vacuum leaks and MAF issues first.
• Replacement: It’s typically a quick job—disconnect battery (if required by procedure), unplug, remove the retaining fastener, swap the sensor with a new O-ring, refit, and clear codes. Follow factory torque specs and procedures from Toyota TIS. A short drive lets the ECU relearn.

Owners sometimes mix up the MAF and MAP. The Blade has both: the MAF measures how much air enters, while the MAP reports the pressure inside the manifold. When they agree, the ECU nails fuelling and spark, when one goes off, drivability suffers. Keeping connectors clean, sealing intact, and using quality parts will keep the Blade happy for many kilometres.

Popular questions

Where is the MAP sensor on a 2008 Toyota Blade?
The MAP sensor is mounted on the intake manifold plenum. On the transverse layout, look at the upper manifold near the firewall side. It’s a small, black, rectangular sensor with a single electrical plug and a retaining screw.

Does the Blade use both a MAF and a MAP?
Yes. The Blade’s ECU reads the MAF for primary airflow and the MAP for manifold pressure and load. Using both improves drivability, altitude compensation, and fault detection.

What fault codes point to a MAP issue?
Common MAP-related DTCs are P0106 (range/performance), P0107 (low input), and P0108 (high input). You may also see rich/lean or misfire codes if the reading is way off. Always check wiring and vacuum integrity before replacing the sensor.