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Home >> Chevrolet >> 2020 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 107 (Power Seat System) >> Diagnostic Information and Procedures >> DTC B3920 >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

For an overview of the component/system, refer to:Memory Seats Description and Operation 

Circuit Description
Control - Seat Motors The output circuit is switched to 12 V to activate the component.
Control - Seat Motors The output circuit is switched to ground to activate the component.
Component Description
K40D Seat Memory Control Module - Driver Depending on the version, the control module can support different functions:
  • Seat Motors
  • Adjustable Pedals
  • Outside Rearview Mirror

The control module also reads various switches and sensors and makes their values available via serial data.
M50D Seat Front Vertical Motor - Driver The motor M51P is a bidirectional DC motor that moves a seat.
M55D Seat Rear Vertical Motor - Driver The motor M51P is a bidirectional DC motor that moves a seat.
M51D Seat Horizontal Motor - Driver The motor M51P is a bidirectional DC motor that moves a seat.
M56D Seat Recline Motor - Driver The motor M55P is a bidirectional DC motor that moves a seat.