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Home >> Chevrolet >> 2022 >> Tahoe PPV, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Controls And Fuel - 3.0L (Lm2) Diesel - Diagnostic Information And Procedures (3 Of 5)) >> Diagnostic Information and Procedures >> DTC P109F, P10A1, P10A2, P26B7-P26B9, or P23C6 >> 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: Cooling System Description and Operation (LM2)

Circuit Description
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.
Component Description
Q74 Engine Coolant Bypass Valve The component is actuated by a bidirectional DC motor. Q74 is part of the component: 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.
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