LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 69 (Fixed And MOVEABLE Window System) >> Diagnostic Information and Procedures >> Power Windows Malfunction (A55 With A33) >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2017 Chevrolet Spark. 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
Ignition Supplied from a fuse.
Power Window Motor Driver Up Control The output circuit is switched from ground to 12 V to activate the component.
Power Window Motor Driver Down Control The output circuit is switched from ground to 12 V to activate the component.
Power Window Motor Passenger Down Control The output circuit is switched from ground to 12 V to activate the component.
Power Window Motor Passenger Up Control The output circuit is switched from ground to 12 V to activate the component.
Power Window Motor Left Rear Down Control The output circuit is switched from ground to 12 V to activate the component.
Power Window Motor Left Rear Up Control The output circuit is switched from ground to 12 V to activate the component.
Power Window Motor Right Rear Down Control The output circuit is switched from ground to 12 V to activate the component.
Power Window Motor Right Rear Up Control The output circuit is switched from ground to 12 V to activate the component.
Ground Chassis Ground
Component Description
S79D Window Switch - Driver The assembly on the driver side has one switch for the driver window and one switch for the passenger window. Each switch has 2 outputs, one for window down and one for window up. The motors contain electronics that interpret the up/down signals and actuate the motors accordingly. The circuits for the motor in the driver door are directly wired to the motor. The circuits for the window in the passenger door first go to the passenger window switch and then to the motor. In the inactive position the switch on the passenger side passes on the two control signals as they are. When actuated, it switches one of the control circuits to 12 V.
S79P Window Switch - Passenger The assembly on the driver side has one switch for the driver window and one switch for the passenger window. Each switch has 2 outputs, one for window down and one for window up. The motors contain electronics that interpret the up/down signals and actuate the motors accordingly. The circuits for the motor in the driver door are directly wired to the motor. The circuits for the window in the passenger door first go to the passenger window switch and then to the motor. In the inactive position the switch on the passenger side passes on the two control signals as they are. When actuated, it switches one of the control circuits to 12 V.
S79LR Window Switch - Left Rear The assembly on the driver side has one switch for the driver window and one switch for the passenger window. Each switch has 2 outputs, one for window down and one for window up. The motors contain electronics that interpret the up/down signals and actuate the motors accordingly. The circuits for the motor in the driver door are directly wired to the motor. The circuits for the window in the passenger door first go to the passenger window switch and then to the motor. In the inactive position the switch on the passenger side passes on the two control signals as they are. When actuated, it switches one of the control circuits to 12 V.
S79RR Window Switch - Right Rear The assembly on the driver side has one switch for the driver window and one switch for the passenger window. Each switch has 2 outputs, one for window down and one for window up. The motors contain electronics that interpret the up/down signals and actuate the motors accordingly. The circuits for the motor in the driver door are directly wired to the motor. The circuits for the window in the passenger door first go to the passenger window switch and then to the motor. In the inactive position the switch on the passenger side passes on the two control signals as they are. When actuated, it switches one of the control circuits to 12 V.
M74 Window Motor An electric DC motor.