Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Circuit/System Description
2019 Chevrolet Trax Premier, AWDSECTION Circuit/System Description
WARNING: This page is about a different car, the 2018 Chevrolet Trax and 2018 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
For an overview of the component/system, refer to: Rear Window Defogger Description and Operation
| Circuit | Description |
|---|---|
| B+ - Relay Switch | Supplied from a fuse. |
| E18 Rear Defogger Grid Control - Component | The output circuit is switched to 12 V to activate the component. |
| Control - Relay Coil | The output circuit is switched to 12 V to activate the component. |
| E18 Rear Defogger Grid Ground - Component | Chassis Ground |
| Ground - Relay Coil | Chassis Ground |
| Component | Description |
|---|---|
| X50A Fuse Block - Underhood | The fuse block houses various fuses and relays. |
| E18 Rear Defogger Grid | Window defoggers are parallel resistive conductors in or on the glass that heat up when electric power is applied. |
| K33 HVAC Control Module | The control module controls a series of actuators to ensure optimal heating, ventilation and air conditioning of the passenger compartment. The control module does this by reading values from a variety of sensors and interprets the data and adjusts the actuators accordingly. |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.