Volvo Workshop Manuals
V70 XC AWD L5-2.4L Turbo VIN 56 B5254T (1998)
Powertrain Management > Sensors and Switches - Powertrain Management > Sensors and Switches - Fuel Delivery and Air Induction > Air Flow Meter/Sensor > Component Information > Diagrams > Page 2931
Air Flow Meter/Sensor: Description and Operation
MASS AIR FLOW SENSOR
The Mass Air Flow (MAF) Sensor supplies the Engine Control Module (ECM) with a signal describing the intake air mass.
This information is used to calculate:
^ Ignition timing
The mass air flow (MAF) sensor consists of a plastic housing containing a connector, electronic circuitry and an aluminum heat sink. The mass airflow
The mass air flow (MAF) sensor is supplied with battery voltage and has separate power and signal ground points. The signal from the sensor varies
Since working temperature is relatively high (170°C), and the flow and temperature sensitive resistors are mounted on the side of the hot film, a
The engine control module (ECM) will adopt substitute values if the mass air flow (MAF) sensor signal is missing or faulty.
The mass air flow (MAF) sensor is located between the Air Cleaner (ACL) cover and the fresh air intake.
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