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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 143 (Fixed And MOVEABLE Windows) >> Diagnostic Information and Procedures >> DTC B1956-B1959 >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.

For an overview of the component/system, refer to: Power Windows Description and Operation 

Circuit Description
B+ - M74D Front Side Door Window Regulator Motor - Driver Supplied from a fuse.
B+ - M74P Front Side Door Window Regulator Motor - Passenger Supplied from a fuse.
Ground - M74D Front Side Door Window Regulator Motor - Driver Chassis Ground
Ground - M74P Front Side Door Window Regulator Motor - Passenger Chassis Ground
Component Description
M74D Front Side Door Window Regulator Motor - Driver The motor M74D is a bidirectional DC motor that moves the component: Driver Power Window
M74P Front Side Door Window Regulator Motor - Passenger The motor M74P is a bidirectional DC motor that moves the component: Passenger Power Window