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Mass Airflow Sensor

MASS AIRFLOW SENSOR VOLTAGE ⁽¹⁾

Application

Volts

ECM Pin B5 & Ground ⁽²⁾

Engine Off

0.0-0.3

At Idle

0.8-1.2

ECM Pin B6 & Ground ⁽²⁾

Engine Off

Zero

At Idle

Zero

ECM Pin B11 & Ground ⁽²⁾

Engine Off

10-13

At Idle

13-14

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

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