Have you already eleminated every other possibility?
Because MAp sensors can break, just like everything else, but it is very unlickly it will.
Is the starter turning over the engine? Is fuel comming into the cylinders? Is air comming into the cylinders? Are you getting good spark?
I think the MAP sensor is one of the last things you could check
If you still want to check the MAP sensor. You can check the voltage on the connector of the sensor. With the contact of the car on, it should read between 4 and 6 Volts
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