Driver Information Module (2001): Function: Clock

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Fig 1: Identifying Clock Input And Output Signals

Courtesy of VOLVO CARS OF NORTH AMERICA.

The only function of the clock is to display the time in hours and minutes.

The data is transmitted via the control area network (CAN) from the central electronic module (4/56) to the driver information module (5/1).

The customer can adjust the time using a knob on the clock display. The driver information module then transmits the new time to the central electronic module which registers the new data and updates its clock accordingly. The customer can select whether the time will be displayed using the 12 or 24 hour clock. If the 12 hour clock is selected AM or PM is automatically displayed.