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Home >> Chevrolet >> 2020 >> Camaro SS, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Automatic Transmission - 8L45 (M5T) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0851 >> Circuit/System Description

Circuit/System Description

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Circuit Description
Signal Regulated voltage supplied by the control module. - K20 Engine Control Module
Ground Supplied by a control module. - K71 Transmission Control Module
Component Description
B15 Transmission Internal Mode Switch The switch has 5 contacts which close in a specific sequence depending on the position of the selector lever. An additional contact generates a P/N signal for the engine control module.
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.
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.