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Home >> Volvo >> 2012 >> C30 R Design L5-2.5L Turbo VIN 67 B5254T7 >> Repair and Diagnosis >> Body and Frame >> Body Control Systems >> Description and Operation >> Control Modules, Doors >> Function

Function






Function

Central locking
See Design and Function, Central locking.

Operating windows




Operating the window from the driver's seat
The window is operated by the switch in the control panel (3/81). The motor for the power window on the driver's side is controlled directly from the driver door module (DDM) (3/126). The motor for the power window on the passenger side is controlled via controller area network (CAN) communication from the driver door module (DDM) to the passenger door module (PDM) (3/127).
The signals for operating the rear window on the driver's side are transmitted from the driver door module (DDM) to the rear window using LIN-communication (does not apply to the C30).
The signals for operating the rear window on the passenger side are transmitted from the driver door module (DDM) via the controller area network (CAN) to the passenger door module (PDM) and then to the rear window using LIN-communication (does not apply to the C30).
Operating the front window on the passenger side
The passenger door module (PDM) (3/127) only operates the front window on the passenger side. The window is operated by the switch in the control panel (3/83). The signal is sent via the passenger door module (PDM) to the power window motor on the passenger side.
Operating the window in the left rear door (does not apply to C30/C70)
Left rear door module (LDM) (3/128) can only operate the window in the left rear door. The window is operated by the switch in the control panel (3/85). The signal is sent via the left rear door module (LDM) to the power window motor in the left rear door.
Operating the window in the right rear door (does not apply to C30/C70)
Right rear door module (RDM) (3/129) can only operate the window in the right rear door. The window is operated by the switch in the control panel (3/86). The signal is sent via the right rear door module (RDM) to the power window motor in the right rear door.
Activating the child lock (does not apply to the C30/C70)
If the child lock is activated from the driver door module (DDM), the rear windows cannot be operated from the rear doors. The child lock is operated via the switch in the control panel on the driver's side. A signal is transmitted to the driver door module (DDM) and on via LIN-communication to the left rear door module (LDM) and right rear door module (RDM) which shut off window operation in the respective doors.
Operating all windows simultaneously (only applies to the C70, not to the C70 AME with structure week 200820 or later)
On the control panel for the C70 there is a button for operating all windows up or down.
This switch has three positions that control:
- Normal position where the function is passive.
- Down, automatically operates all windows down (AUTO-DOWN).
- UP, operates all windows up as long as the button is held in.

Functions in the door mirrors
The functions in the door mirrors (6/62 left) (6/63 right) are controlled from the control panels for the driver door module (DDM) (3/126) or passenger door module (PDM) (3/127) are:
- setting the mirror position
- folding in the door mirrors
- heating the mirrors
- approach lighting/guide lighting
- indicators.
The left door mirror has a temperature sensor for the outside temperature. The signal from the temperature sensor is directly connected to the central electronic module (CEM). The signal is not controlled by the driver door module (DDM) or the passenger door module (PDM).

Setting the mirror position




The position of the mirror is controlled using buttons on the control panel on the driver's side (3/81). The driver door module (DDM) (3/126) transmits a signal directly to the mirror on the driver's side (6/62). When adjusting the mirror on the passenger side (6/63), a signal is transmitted via the driver door module (DDM) to the passenger door module (PDM) (3/127) on the controller area network (CAN). The passenger door module (PDM) transmits the signal to the door mirror.
Memory function (Only C70)
If the vehicle is equipped with a power seat with memory function for external rear view mirrors, mirror position is stored by two potentiometers.
Signal about position in X-direction and Y-direction is received by Driver door module (DDM) and Passenger door module (PDM), respectively.
When one of the buttons on the control unit for the power driver seat is activated, a signal is sent from Power seat module, left (PSL) (3/26) to Driver door module (DDM) and Passenger door module (PDM), respectively.
These set the external rear view mirrors in stored position. Stored position can also be set depending on which remote control unlocks the vehicle.
See more about this function in Design and Function, Power seat module, left (PSL)/Power seat module right (PSR).

Folding in the door mirrors




The mirror is folded by holding the L and R buttons on the control panel (3/81) on the driver's side. A signal is transmitted via the driver door module (DDM) (3/126) to the passenger door module (PDM) (3/127) via the controller area network (CAN). The control modules send the signal on to each door mirror (6/62 and 6/63), which fold each mirror in or out.

Heating the mirrors




Mirror heating is activated at the same time as rear window heating (there is no rear window heating on the C70). When the switch for heated rear window/ door mirrors is pressed the climate control module (CCM) (3/112) activates rear window heating. At the same time the signal is sent via the controller area network (CAN) to the driver door module (DDM) (3/126) and the passenger door module (PDM) (3/127) to activate the door mirror heating. When the Driver door module (DDM) respectively, Passenger door module (PDM) receive the signal, the outputs for each door mirror are powered (6/62 and 6/63). The function is switched off at the same time as the rear window defrosting. This can happen in three different ways:
- If the switch for heated rear window/door mirrors is pressed again after activation, the function is switched off, using a signal from the climate control module (CCM).
- The heating switches off automatically 12 minutes after activation. The driver door module (DDM) and the passenger door module (PDM) receive a signal from the climate control module (CCM) which requests that the function is activated
- The heating is also switched off if the ignition is switched off.

Approach lighting/Guide lighting




The approach lighting is activated using the remote control for the vehicle. The function can only be activated when the ignition is off. When the yellow button on the remote control is pressed, the central electronic module (CEM) (4/56) receives an activation signal which is sent onwards on the controller area network (CAN). The driver door module (DDM) (3/126) and passenger door module (PDM) (3/127) receive the signal and switch on the lighting for the left door mirror (6/62) and the lighting for the right door mirror (6/63). The function is deactivated by pressing the button on the remote control again. A signal is then sent from the central electronic module (CEM) to the driver door module (DDM) and passenger door module (PDM) requesting that the function is switched off. The function is also switched off when the ignition is switched on.
The guide lighting is activated using the left control stalk (the key must be removed from the ignition switch). Steering wheel module (SWM) (3/254) transmits a signal via the controller area network (CAN) to the central electronic module (CEM). When the car is then locked, the central electronic module (CEM) sends a signal onwards via the controller area network (CAN) to the driver door module (DDM) and passenger door module (PDM), which turn on the lights in the door mirrors. The lights are part of the guide lighting function and remain on for a set time (30, 60 or 90 seconds).

Measuring the outside temperature




The left door mirror has a temperature sensor for the outside temperature. The signal from the temperature sensor is directly connected to the central electronic module (CEM). The signal is not controlled by the driver door module (DDM) or the passenger door module (PDM).

Indicators
See Design and Function, Central electronic module (CEM).

Short-drop (only C70)
During operation of the roof, all side windows lower at least 80 mm to prevent friction between the roof unit and the windows. A signal is transmitted from the Convertible Roof Module (CRM) via the CAN network to the Driver door module (DDM) and the Passenger door module (PDM). These send a signal on via LIN to the Left rear door module (LDM) and Right rear door module (RDM). When the door are opened the window lowers 4 mm to prevent wearing the roof's rubber weatherstrip. After the door has been closed the window goes up behind the rubber weatherstrip to prevent leakage.

Blind spot information system (BLIS)




The figure shows the area within which the Blind Spot Information System (BLIS) detects.
A: approximately 9.5 meters.
B: approximately 3 meters.





Hint: The illustration applies to left-hand drive vehicles.

The cameras take 30 images per second and compare each image with the previous one to check for changes. To determine if any changes are significant, the camera module must also know the vehicle speed. To calculate the vehicle speed and know if the vehicle is turning, the speed signals for each rear wheel are used from the Brake control module (BCM). The driver door module (DDM) (3/126) and passenger door module (PDM) (3/127) receive information from the Brake control module (BCM) (4/16), via CAN, about the speed of both rear wheels. Both these signals are then transmitted to the Left Camera Module (LCM) (6/62) and the Right Camera Module (RCM) (6/63) via LIN communication.
If the camera module discovers that there is something in the dead angle, an orange LED, located on the inside of the panel at the front of the window on the door, comes on. This LED is directly connected to the respective camera module.
In daylight the system reacts to the shapes of surrounding vehicles. The system is designed to detect cars, trucks motorcycles and buses. In darkness the system reacts to the light from the headlamps of other vehicles. If the headlamps of surrounding vehicles are not switched on then the Blind Spot Information System (BLIS) will not detect the vehicle.
The system detects sharp contours. Light reflections and shadows can generate warnings because the system cannot distinguish them from real objects.

Weather conditions that may generate false warnings are:
- Reflections from a wet road surface.
- Low sun shining into the camera.
- The vehicle's own shadow on large bright surfaces.
Blind Spot Information System (BLIS) is activated when the ignition is on. The system cannot be deactivated but the function to light the light-emitting diodes and to show text messages can be disconnected with the switch on the comfort panel. The function can be reconnected with the switch.
When the switch is activated, a signal is sent from Climate control module (CCM) (4/6) to Driver door module (DDM) and Passenger door module (PDM) via the CAN-net.
A diagnostic trouble code (DTC) is stored if a fault is detected by the Driver door module (DDM) and Passenger door module (PDM) and a signal is transmitted via CAN to the Driver information module (DIM) (5/1), which lights the general warning lamp and displays a text message.

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