10444992

SOLENOID VALVE FOR EGR VALVE

Possible DTC : P0403

＊ CC-CODE

(1)

When feedback governing exceeds the set value in comparison of aim value with the actual value.

Possible causes of trouble :

Solenoid valve sticks

Vacuum source/ pipe/ hose

(2)

C018 (Line : Short circuit)

Possible causes of trouble :

Short circuit to Bat line, Open circuit in wiring

(3)

C019 (Line : Open circuit)

Possible causes of trouble :

Short circuit to GND line

Check wiring between ECU pin 16 and solenoid valve.

Check wiring between supply voltage line and solenoid valve.

Check for leaks in vacuum hose to EGR valve and solenoid valve.

Pull off the plug of solenoid valve, measure the resistance of solenoid valve.

Set value : 14 ~ 17 Ω

Measure the frequency of control voltage :

300 Hz

Check whether vacuum is provided by vacuum source.

Check mode : Keep engine at 1500rpm for 20 seconds and then conduct the measurement as it is.

Set value ＞ 650 mmHg

Pull off the vacuum hose from EGR valve.

Check for presence of vacuum.

Check the mechanical components of solenoid valve if vacuum is present but engine speed does not change.

10.

If valve stick is in closed position or C019 occurs, then black smoke arises.