Mass Airflow Sensor

MASS AIRFLOW SENSOR VOLTAGE ⁽¹⁾

Application

Volts

ECM Terminal No. 5 & Ground ⁽²⁾

Engine Off

0.0-0.3

At Idle

0.8-1.2

ECM Terminal No. 20 & Ground ⁽²⁾

Engine Off

Zero

At Idle

Zero

⁽¹⁾	For further testing, see TESTS W/CODES article.

⁽²⁾	Connect DVOM between indicated ECM terminal and ground.