Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSMART2009FORTWO BRABUS COUPE (451.333) L3-1.0L (132.930)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSMANIFOLD PRESSURE/VACUUM SENSORDESCRIPTION AND OPERATION
2009 Smart ForTwo BRABUS Coupe (451.333) L3-1.0L (132.930)
Manifold Pressure/Vacuum Sensor: Description and Operation
2009 Smart ForTwo BRABUS Coupe (451.333) L3-1.0L (132.930)SECTION Description and Operation
GF07.04-P-6062MCC Component Description For The Intake Manifold Pressure Sensor
Shown on engine 132.910
B28 Intake manifold pressure sensor
Location
The intake manifold pressure sensor is located on the intake manifold.
Task
The intake manifold pressure sensor detects the pressure and the air temperature in the intake manifold downstream of the throttle valve and passes this information on in the form of voltage signals to the ME-SFI [ME] control unit (N3/10).
Function pressure measurement
The pressure applied to the pressure gauge connection distorts a membrane which acts on a piezoresistor. In this way the piezoresistor changes its resistance value and transmits an appropriate voltage signal to the ME-SFI [ME] control unit.
Function temperature measurement
There is an additional NTC resistor integrated in the intake manifold pressure sensor. This alters its electrical Resistor according to the air temperature in the intake manifold. The ME control unit applies a sensor voltage and evaluates the air temperature in accordance with the signal voltage.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.