Checking The Function

Fig 1: Checking Traffic Load On CAN Cables

Courtesy of VOLVO CARS CORPORATION

• Ignition on.

  Check the function of the control panel buttons.

  Fig 2: Identifying Control Panel Buttons Switch Pack

  Courtesy of VOLVO CARS CORPORATION

Do all the buttons operate normally? 

• YES 

  Refer to INTERMITTENT FAULT 

• NO 

  Refer to CHECKING THE WIRING AND COMPONENT