Circuit/System Description
For an overview of the component/system, refer to: Power Windows Description and Operation
| Circuit |
Description |
| B+ - M74D Window Motor - Driver |
Supplied from a fuse. |
| B+ - S79D Window Switch - Driver |
Supplied from a fuse. |
| Signal - Down @ M74D Window Motor - Driver |
The output circuit is switched to ground to activate the component. |
| Signal - Up @ M74D Window Motor - Driver |
The output circuit is switched to ground to activate the component. |
| Signal - Express @ M74D Window Motor - Driver |
The output circuit is switched to ground to activate the component. |
| Ground |
Chassis Ground |
| Component |
Description |
| S79D Window Switch - Driver |
The S79D sends a serial data message to the K9 indicating the M74 function that has been requested. |
| M74D Window Motor - Driver |
- Power Window Control
- The control module also reads various switches and sensors and makes their values available via serial data.
|
| K9 Body Control Module |
The module controls various vehicle functions like lighting, central door locking, power windows, etc. |