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Home >> Buick >> 2019 >> Regal TourX Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 138 (Engine Controls And Fuel - 3.6L (LGX) - Diagnostic Information And Procedures (P0010-P0446)) >> Diagnostic Information and Procedures >> DTC P0090-P0092, P00C8, P00C9, P00CA, or P163A >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2020 Buick Regal and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

For an overview of the component/system, refer to: Fuel System Description

Circuit Description
Control - Terminal 1 The output circuit is switched to ground to activate the component.
The output is PWM controlled.
Control - Terminal 2 The output circuit is switched to 12 V to activate the component.
The output is PWM controlled.
Component Description
G18 High Pressure Fuel Pump The fuel pressure regulator is a solenoid valve that restricts the flow of fuel to the high pressure fuel pump and thereby controls the pressure the pump can produce.
K20 Engine Control Module The control module controls a series of actuators to ensure optimal engine performance. The control module does this by reading values from a variety of sensors, interprets the data and adjusts the engine actuators accordingly.

The fuel pressure regulator is a part of the high pressure fuel pump.The fuel pressure regulator is the solenoid valve that controls the pressure in the fuel rail.

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