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Home >> GMC >> 2021 >> Acadia AT4 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 9T50 (M3H), 9T60 (M3G) Or 9T65 (M3W) - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P27EB, P27ED, or P27EE >> Circuit/System Description

Circuit/System Description

Circuit Description
9 V Reference Regulated voltage supplied by the control module.
Signal The control module input circuit has an internal resistance connected to ground.
Component Description
B315A Transmission Range Control Valve 1 Position Switch A linear hall effect sensor that changes current flow based on the magnetic field's position relative to the sensor.
K71 Transmission Control Module The control module contains a microprocessor used to process input data to control outputs.

The B315A Transmission Range Control Valve 1 Position Switch monitors the position of the Mode 1 Electronic Transmission Range Selector Valve