Checking Mass Air Flow When Under Partial Load

Checking Mass Air Flow When Under Partial Load









- Note the value on Manifold Absolute Pressure, it will be used later as a comparison during fault diagnosis.









- Drive the car in top gear with a steady high engine load
- Driving uphill is recommended
- Read value: Airmass Deviation from Calculated (Trionic).
- State what the diagnostic tool shows:

-15% to -25% - Changing Components
Other Value - Checking the Fuel Supply