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Home >> Cadillac >> 2021 >> XT5 Sport >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (Automatic Transmission - 9T60 (M3G) Or 9T65 (M3W) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P08CA or P08CB >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2020 Cadillac XT5. However, it is still accessible from the selected car via links, so may be relevant.

For an overview of the component/system, refer to Electronic Component Description

Circuit Description
Control - Terminal 28 Supplied by a control module.
Control - Terminal 10 The output circuit is switched to ground to activate the component.
Component Description
Q77L Transmission Control Solenoid Valve 11 A solenoid valve is an electro-mechanically operated valve. The valve is controlled by an electric current through the solenoid.
This is a normally closed valve that is controlled on/off.
K71 Transmission Control Module The control module contains a microprocessor used to process input data to control outputs. The control module receives information from a variety of sensors, switches and serial data information from other control modules. This information is used to control a combination of solenoid valves to obtain the correct line pressure, gear ratio and torque converter clutch operation.
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