With exhaust-gas recirculation (EGR) a portion of the exhaust gas is led into the engine's intake tract. Up to a certain degree, an increasing portion of the residual exhaust gas content has a positive affect upon the exhaust-gas emissions. For ECM control, the actual drawn-in fresh-air mass is measured and compared at each operating point with the air mass setpoint value. Using the signal generated by the control circuit, the ECG valve opensso that exhaust gas can flow into the intake tract.
Refer to P0405, P0406 DTC inspection procedures.
Check item | Check condition (Using Hi-scan(pro) | Engine condition | Standard value |
EGR solenoid valve | Solenoid valve OFF → ON | Ignition switch : ON | Check the sound for proper operation |
Measure resistance between the terminals 1 and 2.
Check item | Specified value |
EGR solenoid valve resistance | 14 ~ 17Ω |
