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Home >> Chevrolet >> 2021 >> Trailblazer RS, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Controls And Fuel - 1.0L (L4B L4F L4G LIJ) Or 1.2L (L4H L4K LIF LIH) - Diagnostic Information And Procedures (2 Of 2)) >> Diagnostic Information and Procedures >> DTC P1176 or P1177 >> 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.
Component Description
B47 Fuel Pressure Sensor The sensor measures the pressure in the component: Fuel Line
The signal voltage increases when the pressure increases.
B150 Fuel Tank Pressure Sensor The pressure sensor generates an analog signal output proportional to a pressure input and the reference voltage.
The pressure sensor measures fuel tank vapor space pressure then converts the information to an electrical output.
K111 Fuel Pump Driver Control Module The control module contains a microprocessor used to process input data to control outputs.
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