Mass air flow (MAF) sensor
The mass airflow sensor gives engine control module (ECM) information about the air mass that passes through the sensor, which then is sent into the engine as well as the temperature of that air.
The values should be regarded as approximate.
Mass air flow (MAF) sensor
| Type | Voltage feed (# component pin) | Value (# component pin) | Miscellaneous (# component pin) |
|---|---|---|---|
| Combined mass airflow sensor with air temperature sensor | 12V (#1) (air mass) 5V (# 4) (air temperature) |
1V = 1.3 g/s at 20°C 4.4V = 170 g/s at 20°C (#3 - #2) 16 kΩ at -20°C 6 kΩ at 0°C 2.5 kΩ at 20°C 0.6 kΩ at 60°C (#4 - #5) |
(#2) signal ground (air mass) (#3) output signal (air mass) (#5) signal ground (air temperature) |
Comparison table
| Mass air flow (g/s) | RPM at unloaded engine, warm engine (RPM) | (V) | (# component pin) |
|---|---|---|---|
| 3,3 | 850 | 1,3 | (#3 - #2) |
| 5,7 | 1500 | 1,6 | (#3 - #2) |
| 7,3 | 2000 | 1,7 | (#3 - #2) |
| 9,3 | 2500 | 1,8 | (#3 - #2) |