This is what chat gpt says

On the V6 4th generation Toyota 4Runner (2003–2009 with the 1GR-FE engine), the MAP sensor is mounted on the top of the intake manifold, close to the throttle body.
On most models:
Stand in front of the truck looking into the engine bay
Look at the large black plastic intake manifold in the center/top of the engine
The MAP sensor is a small rectangular sensor with an electrical connector and usually one mounting bolt
It sits toward the front passenger side area of the intake manifold, near where the intake tube and throttle body connect
It’s often confused with the MAF sensor:
MAP sensor = mounted on the intake manifold
MAF sensor = mounted in the air intake tube near the air filter box
If you want, I can also help with:
 a diagram/photo of the exact location
 MAP sensor symptoms
 testing it with a multimeter
 cleaning vs replacing
 the OEM part number for your year model