Toyota MAP Sensor Cleaning When a Toyota engine works harder to drive up a hill, it needs a way to communicate within the engine to know how much fuel to use. A manifold absolute pressure (MAP) sensor plays a key role in this communication. Identification A Toyota MAP sensor is attached to the intake manifold. It senses air pressure brought into the engine for reporting to the engine's on-board computer. This information allows the engine to add or lessen the amount of fuel sent to the combustion chamber to control overall power. Maintenance Typically, a MAP sensor cannot be cleaned internally, since it is essentially a circuit board enclosed in plastic. But, the vacuum hose that connects to the MAP sensor can be cleaned out with canned air or a long stick Autel EBS301 Scanner. It is imperative the air supplied to the MAP sensor is not hindered by a clogged hose or the readings can be skewed. Considerations Care must be taken while cleaning near a MAP sensor. Since it is an electronic component MaxiTPMS TS601 Scanner, proper electrical grounding procedures should be taken if working with the unit, for the safety of the person and the vehicle engine.
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