Optima V6-2.7L VIN 4 (2007)
Air Flow Meter/Sensor: Testing and Inspection
INSPECTION
Mass Air Flow Sensor (MAFS) is a hot-film type sensor and is located in between the air cleaner and the throttle body. It consists of a tube, a sensor
assembly and honeycomb cell and detects intake air quantity flowing into the intake manifold. Air flows from the air cleaner assembly through the
honeycomb cell and over the hot film element. At this time, heat transfer is generated by convection and this sensor loses its energy. This sensor detects
the mass air flow by using the energy loss and transfers the information to the PCM by frequency. The PCM calculates fuel quantity and ignition timing.
SPECIFICATION
CIRCUIT DIAGRAM
COMPONENT INSPECTION
1. Check the MAFS visually.
a. Mounting direction correct.
b. Any contamination, corrosion or damage on connector.
