Air Mass Meter

This meter continually measures the amount of air entering the engine intake system. The air mass meter consists of a platinum wire filament located in the intake air stream and a circuit board with a potentiometer for CO adjustment.

The wire filament sends a temperature related signal to the circuit board for processing. Once processed, the air flow signal is sent to the electronic control unit.

When the engine stops, the filament is heated to a high temperature for less than a second. This burns off any dirt that may have collected on the wire which could result in an incorrect air flow reading.