Checking the power supply

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS OF NORTH AMERICA.

• 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: Identifying Breakout Box

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  Fig 3: Identifying Voltage Display

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Is the voltage OK? 

• YES 

  Refer to Checking the wiring 

• NO 

  Refer to Repair cable