Activation Of STC/DSTC (-2006)

Fig 1: Identifying Activation Of STC/DSTC (-2006)

Courtesy of VOLVO CARS OF NORTH AMERICA.

The STC/DSTC function is activated using the switch (3/95) on the center console. The ignition key must be in position II and the engine running for the climate control module (CCM) (3/112) to accept activation of this function. During activation and deactivation, the climate control module (CCM) transmits a signal indicating the selected status for STC/DSTC to the brake control module (4/16) via the controller area network (CAN).

The brake control module (BCM) then transmits a signal to the climate control module (CCM) indicating that the STC or DSTC function is on or off. The climate control module (CCM) uses this information to light and turn off the LED in the switch.