Chevrolet Cruze Repair Manual: Rear Window Defogger Description and Operation
Rear Window Defogger System Components
The rear window defogger system consists of the following components:
- HVAC Control Module
- HVAC Control Head
- Rear Window Defogger Relay
- Rear Defogger Grid
- F28UA 40A Fuse
Rear Window Defogger Operation
The rear defog control system utilizes a single zone backlight design, driven with a single relay configuration. Additionally, up to two outside rear view mirrors can be heated if required. A switch for the customer to control the system is provided within the HVAC control head. Also included in the HVAC control head is an indicator to inform the customer with the current state of the system. The system is only operational when engine is running or during remote start.
Pressing the heated rear window switch on the HVAC control face plate causes the HVAC control head to send a serial data message to the HVAC control module requesting rear window defog operation. The HVAC control module upon receipt of the serial data message will provide voltage to the coil side of the rear window defogger relay, this will energize the relay causing the relay switch contacts to close allowing B+ voltage to flow through the rear defogger grid control circuit to the rear defogger grid.
When the rear heated window switch is pressed and the engine is running, the rear defog control system will remain active for 10 minutes.
After the initial cycle has lapsed, pressing the switch again will continue rear window defogger operation, but the cycle will only last 5 minutes. The rear defog control system will function continuously if the vehicle speed is greater than 70 kilometers per hour (45 mph).
Stationary Window Description
Most stationary windows, specifically windshields, are retained to the body with urethane adhesive which adheres the window to the body.
This increases structural integrity. The reinstallation of windows with urethane adhesive requires complete replacement of the urethane adhesive bead: The extended method (also known as long method, full strip or full cut) is the only recommended procedure for General Motors Vehicle.
Special Tools and Equipment
Power Windows Description and Operation
Power Windows System Components
The power window system consists of the following components:
Driver window switch
Passenger window switch
Left rear window switch
Right rear window switch
...
Horns
Specifications
Horn Replacement
Preliminary Procedure
Remove the front bumper fascia. Refer to Front Bumper Fascia Replacement.
Horn Nut
Caution: Refer to Fastener Caution in the ...
Other materials:
Steering Wheel Controls
Depending on the vehicle options, some audio functions can be controlled through
the steering wheel controls.
(Push to Talk): Press to interact
with Bluetooth or voice recognition.
(Mute/End Call): Press to decline
an incoming call, or to end a current call. Press to silence the vehicle ...
Retained Accessory Power (RAP)
These vehicle accessories may be used for up to 10 minutes after the engine is
turned off:
• Audio System
• Power Windows
• Sunroof
The power windows and sunroof will continue to work for up to 10 minutes or until
any door is opened. The radio will work when the key is in ON/RUN or ACC/ ACCE ...
Air Conditioning Evaporator Hose Assembly Replacement
Preliminary Procedures
Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
Remove the headlamp - right side. Refer to Headlamp Replacement.
Loosen power steering fluid reservoir screw.
Remove brake pipes from the dash lower extension panel.
Remove engine mount. Ref ...