SUCTION CONTROL VALVE
The suction control valve, which is a linear solenoid valve that operates under the duty-cycle rate, is mounted on the supply pump.
The suction control valve controls the amount of fuel that flows from the feed pump to the high-pressure chamber, based on the actuation signals that are output by the engine-ECU.
When the ON duty cycle ratio is lower, the valve opening increases. Then the amount of the fuel flowing into the common rail increases as well as the fuel pressure in the common rail.
When the ON duty cycle ratio is higher, the valve opening decreases. Then the amount of the fuel flowing into the common rail decreases as well as the fuel pressure in the common rail.
Control contents during malfunction:
Rail pressure is controlled in the range from 50 to 100 MPa.
Fuel injection is restricted (output restriction).
The open angle of the accelerator pedal is controlled.
The throttle valve is shut (opening fixed)
EGR control is stopped (fully closed).
SUCTION CONTROL VALVE CHECK
1.Disconnect the suction control valve connector.
2.Measure resistance between terminal No. 1 and No. 2
Standard value: Approximately 2.1 Ω (at 20 °C)
3.If not within the standard value, replace the supply pump assembly. After replacing the supply pump, learn the supply pump. (Refer to GROUP 00 - Precautions Before Service - What The common Rail Engine Learns
Короче, проверять сам клапан, проводку. При целой проводке, замена насоса или ECU двигателя
