Inspect the state of MAFS and air cleaner visually.
Warm up engine until the normal operating temperature.
The electricity device and air conditioner "OFF".
Monitor change of current data at idle after accelerating.[while EGR actuator is 5%(EGR close)]
■ Reference data
Fig.1) Normal current data while accelerating
This current data is nothing but an example at certain condition. Thus, the real current data could be different from this example.
Is the displayed current data normal?
 | ▶ MAFS is normal. |
 | ▶ "Air mass flow" is lower than reference data(less than 350mg/st), • Check intake hose leakage between MAFS and turbo charger. • Inspect EGR actuator open stuck. • Inspect Air Control Valve close stuck. ▶ "Air mass flow" is higher than reference data(more than 400mg/st), • Check intake hose leakage between intake manifold and turbo charger.(through intercooler) • Inspect EGR actuator close stuck. • Inspect blocked EGR cooler. |
