Checking The Control Module

Start by replacing the left Seat heating module (SHM) with the right Seat heating module (SHM) and checking that the affected side now works. If both Seat heating modules (SHM) are damaged, replace one with a new one and check the function of each.

Replace damaged control module.

Other information: 

• see SEAT HEATING MODULE (SHM), REPLACING

Fig 1: Identifying Seat Heating Module (SHM)

Courtesy of VOLVO CARS CORPORATION

Is the function OK? 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  see CHECKING HEATER ELEMENTS