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Home >> Chevrolet >> 2019 >> Cruze Premier, 4D Hatchback >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Controls And Fuel - 1.6L (LH7) Diesel - Diagnostic Information And Procedures (P0016-P054F)) >> Diagnostic Information and Procedures >> DTC P0191-P0193, P127C, or P127D >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different variant/trim than selected.

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

Circuit Description
5 V Reference Regulated voltage supplied by the control module.
Signal The control module input circuit has an internal resistance connected to 5 V.
Low Reference Grounded through the control module.
Component Description
B47B Fuel Rail Pressure Sensor - Fuel Rail Pressure Sensor 1 The sensor measures the pressure in the component: Fuel Rail - The signal voltage increases when the pressure increases.
B47B Fuel Rail Pressure Sensor - Fuel Rail Pressure Sensor 2 The sensor measures the pressure in the component: Fuel Rail - The signal voltage decreases when the pressure increases.
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.
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