CON Controller Voltage Supply

CON Controller Voltage Supply

The controller (CON) is only fitted in the 1-Series and 3-Series as of E87 depending on the variant.

Service instructions if menus are displayed with a delay:
When the buttons of the controller are slid or pushed, the headunit responds with a delay and the menus and functions are displayed with a delay. The following causes are possible:
1. Start-up phase of the headunit
The different applications are still being loaded and will be available after the lengthy start-up phase is completed.
2. Low temperature
Low temperatures extend the start-up phase or delay the image buildup on the screen.
3. Low battery voltage/black screen
A low vehicle voltage can lead to controller failure or delays in its function. Please charge the battery and perform the test step again.

Versions of the controller
The controller is available as a basic version and as a high version.
The high version of the controller is fitted in vehicles with CCC until 09/2008. The high version has a motor that can create variable rotational resistance on the control button. The rotational resistance (e.g. end stop, detents) is controlled by the CCC.The high version can distinguish 8 shifting directions on the control button. The 4 diagonal directions are only used for the navigation system.
The basic version of the controller is fitted in vehicles with CHAMP, M-ASK and CIC. The basic version has only a mechanical rotational resistance on the control button. This means that the control button always has the same rotational resistance (detents) and no end stop.The basic version can distinguish 4 shifting directions.

Supply lines of the controller
The controller is supplied across the following lines:
- Earthing cable
- Positive wire from terminal 30g
- K-CAN connection (K-CAN High and K-CAN Low)

Bus communication of the controller
The controller sends the status of the control button (shifting direction, detected rotation, button of the control button) and the status of the additional buttons via the K-CAN. The recipient of this CAN message is the headunit.
The motor of the control button of the high version is controlled via the K-CAN. The sender of this CAN message is the CCC.
The button illumination is activated directly by the controller. For activation, the controller uses the CAN message of terminal 58g (comes from FRM).