Checking the real time clock in Central Electronic Module (CEM)

Fig 1: Identifying Ignition Off Position

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off.

  Try to set the correct time for the clock in the information module. Wait a few minutes and check whether the clock is still showing the correct time.

Does the clock show correct time? 

• YES 

  Refer to Verification 

• NO 

  Refer to Replacement of control unit