Checking the mass air flow sensor
1. Turn the ignition key to the "ON" position (the engine is turned off).
2. Connect the scanner to the diagnostic connector and check the signal voltage of the mass air flow sensor (MAF PID),
- Signal voltage is less than 1.0 V
If the sensor signal voltage is higher than the specified value, check the wiring harness. If the wiring harness is OK, replace the sensor.
3. Start the engine and warm it up to normal operating temperature.
4. Check the MAF PID sensor signal voltage at idle.
- Signal voltage - 1.6 - 2.0 V
If the sensor signal voltage is different from the specified value, check the wiring harness. If the wiring harness is OK, replace the sensor.
Checking the intake air temperature sensor #2
1. Disconnect the cable from the negative terminal of the battery.
The article is copied from the resource (MAZBOOK)
2. Disconnect the sensor connector.
3. Using an ohmmeter, measure the resistance between terminals "E - D" of the sensor.
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If the resistance value is outside the limits, replace the sensor.
4. If the sensor was replaced, perform the following procedures:
a) Connect the scanner to the DLC2 diagnostic connector.
b) Clear the adjustment parameters of the mass air flow sensor. In the scanner menu, select "Powertrain", further "Data Reset", further "MAF Sensor" and follow the instructions displayed on the scanner display.
c) Perform diagnostics and check for diagnostic trouble codes that may occur when the engine is off (Key on engine off test).
d) Set the ignition switch to the "OFF" position.
d) Wait 5 seconds.
e) Start the engine.
g) Perform diagnostics and check for diagnostic trouble codes that may occur with the engine running (Key on engine running test).
c) Set the ignition switch to the "OFF" position.