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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 123 (Engine Controls And Fuel - 3.6L (LF4) - Diagnostic Information And Procedures (3 Of 3)) >> Diagnostic Information and Procedures >> DTC P1176 or P1177 >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2022 Cadillac CT4. 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
5 V Reference Regulated voltage supplied by the control module.
Component Description
K111 Fuel Pump Power Control Module The control module contains a microprocessor used to process input data to control outputs.
The control module communicates with the engine control module via serial data.
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