Break Checking

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS CORPORATION

Ring break diagnosis 

A ring break diagnosis should be performed to determine where the fault has occurred.

Get the MOST system to perform a complete ring break diagnosis, as follows:

1. Turn ignition off and remove key.
2. Remove the fuse for the AM/FM tuner module (AFM) and traffic message module (TMC).

   If the vehicle is equipped with an Integrated Audio Module (IAM), its fuse must be removed as well.

3. Wait at least three minutes.
4. Ignition on
5. Reinstall the fuse(s) within 25 seconds.
   NOTE:

   If more than one fuse is removed, ensure that the fuse is reinstalled in its original location.

6. Wait at least 30 seconds after ignition on before taking a break position reading.

• Continue 

  Refer to OBTAINING A BREAK POSITION READING