Checking the Mass Air Flow Sensor
1. Set the ignition key to position "ON" (engine off).
2. Connect the scanner to the diagnostic socket and check the signal voltage of the mass air flow sensor (MAF PID),
- Signal voltage - less than 1.0 V
If the sensor signal voltage is higher than specified, 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 signal voltage of the mass air flow sensor (MAF PID) at idle.
- Signal voltage - 1.6 - 2.0 V
If the sensor signal voltage is not as specified, check the wiring harness. If the wiring harness is OK, replace the sensor.
Checking the sensor No. 2 intake air temperature
1. Disconnect a wire from the negative plug of the storage battery.
2. Disconnect the sensor connector.
3. Using an ohmmeter, measure the resistance between the terminals "E-D" sensor.
If the resistance value is out of range, replace the sensor.
4. If the sensor was replaced, then perform the following procedures:
A) Connect the scanner to the DLC2 diagnostic connector.
b) Erase the air mass flow sensor correction parameters. From the scanner menu, select "Powertrain", Further "Data Reset", Further "MAF Sensor" and follow the instructions on the scanner display.
V) Diagnose and check for DTCs that may occur with the engine off (Key on engine off test).
G) Set the ignition switch to position "OFF".
d) Wait 5 seconds.
e) Start the engine.
and) Diagnose and check for DTCs that may occur with the engine running (Key on engine running test).
h) Set the ignition switch to position "OFF".