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Brake Light

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2013 Volvo C70, 2012 Volvo C70, 2011 Volvo C70, 2010 Volvo C70, and 2009 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Brake Light
GLL128563Courtesy of VOLVO CARS CORPORATION

The stop lamps (10/43, 10/50) are activated when the brake switch is (3/9) closed. A directly connected signal is transmitted to the central electronic module (CEM) (4/56) indicating that the brake is activated.

The lamps are powered directly via two outputs on the central electronic module (CEM).

Information about the lamp circuit is extracted via the power supply function in the central electronic module (CEM).

In the event of a fault, the central electronic module (CEM) transmits data via the Control area network (CAN) to the driver information module (DIM) (5/1) which displays a text message.