Glass, Frames and Mechanisms: Overview Land Rover Freelander L359

OVERVIEW

The laminated windshield is bonded and sealed to the body aperture using Polyurethane (PU) adhesive. Bonded to the inner surface of the windshield is the mounting boss for the interior mirror. Dependent on vehicle specification, the windshield may contain 2 heating elements between the windshield laminations.

The toughened rear screen is also bonded and sealed to the body aperture using PU adhesive. A single heating element is printed on the inner surface of the rear screen.

Operation of the window lift system is controlled by the CJB in conjunction with the driver door module and the front passenger door module. The door modules are mounted on the regulators of their respective front windows. Door modules are also mounted on both rear window regulators, and communicate with the front door modules over the Local Interconnect Network (LIN) bus.

The window lift system features one shot up and down operation, plus an anti-trap feature for all door windows.

If the battery is disconnected, the window lift system will require calibrating on battery re-connection. To calibrate the system the following routine must be carried out.

With the ignition on

1. Fully close the door glass and release the switch.
2. Re-apply the switch to close the door glass and hold for approximately 2 seconds.
3. Fully open the door glass and release the switch.
4. Re-apply the switch to open the door glass and hold for approximately 2 seconds.
5. Repeat for all remaining windows.

PRINCIPLES OF OPERATION

The CJB provides a power supply to the driver door switch pack when the vehicle is in power mode 6 (ignition on). Switch requests made using the driver door switch pack are then delivered to the driver door module over the LIN bus.

The driver door module interprets the request made using the switch pack and responds as follows

1. If the request is for drivers side rear window operation, a request is transmitted over the LIN bus to the driver side rear door module.
2. If the request is for front passenger window operation, a request is transmitted over the medium speed CAN bus to the passenger door module.
3. If the request is for passenger side rear window operation, a request is transmitted over the medium speed CAN bus to the passenger door module. This request is then forwarded over the LIN bus to the passenger side rear door module.

For a detailed description of the glass, frames and mechanisms, refer to the relevant Description and Operation. See GLASS, FRAMES AND MECHANISMS .

For a detailed description of the Glass, Frames and Mechanisms and operation, refer to the relevant Description and Operation workshop information.