Description

Rear View Mirrors

NOTE:
A = Hardwired, N = Medium speed CAN (controller area network) bus, O = LIN (local interconnect network) bus









The rear view mirrors comprise an interior mirror mounted to the windshield, and an exterior mirror mounted on each front door cheater. The types of mirrors and associated operating functions installed depend on the specification and trim level of the vehicle.

Interior Mirrors
The interior rear view mirror is provided as a electrically operated automatic dimming type.
The automatic dimming mirror comprises an electro-chromatic glass housed within a surrounding case that is attached with a ball joint connector to the mirror stem. The mirror stem incorporates an 8-pin electrical connector that is connected to the roof panel wiring harness.
Light sensors are mounted on the front and rear of the mirror surround case. The sensors control the automatic dimming feature to reduce glare from the headlights of following vehicles.
The automatic dimming function is permanently active when the ignition is in power mode 4 (Accessory) and power mode 6 (Ignition). The forward facing light sensor monitors the ambient light level at the front of the vehicle; the rearward facing light sensor monitors the light level coming from the rear of the vehicle. When light from the rear of the vehicle exceeds the ambient light level from the front of the vehicle, the automatic dimming circuit darkens the interior mirror surface.
Automatic dimming is inhibited when reverse gear is selected to provide the driver with maximum vision. On vehicles with automatic transmission, the reverse gear signal is provided by the TCM (transmission control module) via the high speed CAN (controller area network) bus to the CJB (central junction box). The CJB (central junction box) then provides a power feed to the mirror.

Exterior Mirrors
Electrically operated and heated exterior mirrors are installed as standard. Depending on the specification and trim level of the vehicle, the following options are available:
- Power fold (switch pack operated feature) and auto fold (remote handset operated feature)
- Memory recall
- Reverse gear mirror dip
The power fold/auto fold feature is available only when power fold mirrors are installed to the vehicle.
The auto fold and reverse gear mirror dip functions are not customer configurable, but may be enabled or disabled by the dealer using the Jaguar approved diagnostic system.
The LH (left-hand) door mirror incorporates an ambient air temperature sensor that is hardwired to the ECM (engine control module). The ECM (engine control module) is connected to the CJB (central junction box) and other control modules via the high speed CAN (controller area network) bus. The sensor provides information to the ECM (engine control module) that is then transmitted on the medium speed CAN (controller area network) bus for use by other control modules.
The exterior mirror lamps are controlled by the interior lighting function.
The door mirrors are controlled using a switch pack located on the driver's door. The switch pack contains 2 non-latching mirror select switches labeled 'L' and 'R' and a 4-way directional joystick. The switch pack is connected to the driver door control module via the LIN (local interconnect network) bus. The driver and front passenger door control modules are connected via the medium speed CAN (controller area network) bus. A hardwired connection between each door control module and the corresponding door mirror, provides the supply and ground paths for the mirror motors.
Each exterior door mirror incorporates 2 motors to control horizontal (left/right) and vertical (up/down) adjustments.
On vehicles installed with a driver's power operated memory seat and memory exterior mirrors, a potentiometer is incorporated within each mirror motor and is used to provide information regarding the actual motor positions. The current position and memory positions of each door mirror motor are maintained and stored within the corresponding door control module.
The memory exterior mirror positions are also monitored and stored within door control module memory when the reverse gear mirror dip function is used.
When reverse gear is selected, the door control modules store the current mirror positions and will then dip both the driver and passenger mirror glass to a default dip position. While reverse gear is selected it is possible to store a preferred dipped mirror position by adjusting the driver/passenger mirror glass to the desired position via the mirror switch pack. When the desired position is achieved using the switches, the new dip positions will be automatically stored by the door control modules when reverse gear is de-selected. Therefore when reverse gear is re-selected, the dip position recalled by the door control modules will be the new reverse gear mirror dip stored position. When reverse gear is deselected the mirror glass will automatically move to the previous stored position prior to reverse gear selection.
Reverse gear mirror dip is only available when memory mirrors are installed, and reverse gear mirror dip is enabled within the instrument cluster.
If the driver selects a memory recall function using the memory seat switch pack, the driver's memory seat and exterior memory mirrors are moved to a stored memory position.
Exterior mirrors with the power fold/auto fold feature incorporate a motor located in the hinge of each exterior mirror arm. Operation of the power fold feature is achieved using the exterior mirror switch pack. Operation of the auto fold feature is achieved using the remote handset.
The power fold function is active when the ignition is in power mode 6 (Ignition).
Both exterior mirrors will power fold when the mirror switch pack 'L' and 'R' switches are pressed together. Pressing the switches again will unfold the mirrors.
When the instrument cluster is configured for the auto fold feature, the mirrors will fold in when the remote handset lock button is pressed. The mirrors will unfold when the vehicle is unlocked using the remote handset unlock button.

NOTE:
If the mirrors are folded in using the mirror switch pack (power fold) and the vehicle is then locked, subsequent unlocking of the vehicle will not unfold the mirrors.
When the remote handset unlock button is operated, the CJB (central junction box) recognizes the remote handset for that vehicle and acknowledges the request.
When the vehicle is locked the door control modules reverse the polarity of the mirror fold motor, power and ground connections to operate the mirrors in the opposite direction.
Exterior mirror heating is provided with heater elements bonded to the back of the mirror glass. Power supply for the mirror heating elements is provided by the corresponding driver or passenger door control module.
Operation of the exterior mirror heaters is fully automatic and not controllable by the driver. Exterior mirror heater operation is determined by ambient air temperature and windshield wiper status.
The mirror heating is controlled in two phases, the initial heating phase and a second PWM (pulse width modulation) controlled phase. In the first phase the heater elements in the mirrors are permanently powered for a pre-determined length of time. This length of time varies with the ambient temperature. During the second PWM (pulse width modulation) phase, the heater elements are turned on and off every 30 seconds. The amount of time the exterior mirror heaters are operational increases if the windshield wipers are switched on. This ensures the mirrors remain mist free in damp and wet conditions, where there is an increased risk of misting.