Checking The Power Supply

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS CORPORATION

• Ignition off
• Disconnect connector from the seat heater module
• Ignition on.

  Check the voltage between seat heater (9/12) for left seat and (9/13) for right seat connector terminal #1 and ground.

  Other information: 

  • To connect the breakout box, see CONNECTING THE BREAKOUT BOX
  • For information about signals, see SIGNAL SPECIFICATION .
  Fig 2: Breakout Box

  Courtesy of VOLVO CARS CORPORATION
  Fig 3: Identifying Voltage Display

  Courtesy of VOLVO CARS CORPORATION

Is the voltage OK? 

• YES 

  Refer to CHECKING THE WIRING 

• NO 

  Refer to REPAIR CABLE