Checking the ground lead

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS OF NORTH AMERICA.

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

  Check the cable between seat heater (9/12) for left seat and (9/13) for right seat connector terminal #5 and ground terminal 31/66 or 31/67. Check for an open-circuit.

  Remedy as necessary.

  Other information: 

  • To connect the breakout box, see Connecting the breakout box
  • For information about signals, see Signal specification
  • See Checking wiring and terminals .
  Fig 2: Identifying Breakout Box

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

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Is the cable OK? 

• YES 

  Refer to Checking the power supply 

• NO 

  OKAY:  Troubleshooting has been completed.