Air Flow Meter/Sensor

Between terminal (1) and ground:
Ignition switch ON (Eng. OFF) Less than 1.0 Volts
Idle (Eng. warmed-up) 1.0 - 1.7 Volts
Idle to approx. 4,000 rpm 1.0 - 1.7 to Approx. 4.0 Volts