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Home >> Cadillac >> 2021 >> CT4 Sport, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 133 (Engine Heating And Cooling - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P1096-P1098, P10A0, P10A1, P26B7, P26BB, P2DE7, or U0617 >> 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:Cooling System Description and Operation (LSY, L3B)

Circuit Description
5 V Reference Regulated voltage supplied by the control module.
Serial Data Digitally encoded information for communication between devices.
Control - Terminal 1 The output circuit is switched from ground to 12 V to activate the component.
Control - Terminal 2 The output circuit is switched from ground to 12 V to activate the component.
Low Reference Grounded through the control module.
Component Description
Q74 Engine Coolant Bypass Valve The component is actuated by a bidirectional DC motor.
Q74 is part of the component: Q97 Engine Coolant Flow Control Valve
K20 Engine Control Module The control module contains a microprocessor used to process input data to control outputs.
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 valve controls the distribution of coolant through the following components:

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