Checking the Ground Terminals

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off.
• Control unit disconnected.
• Switch off all battery loadings such as entrance lighting and radio.

  Connect an ohmmeter between the battery negative lead and test box 14.

  Additional information 

  • To connect the test box, see Connecting the Driver Information Module (DIM) Test Box 
  • For information on signals and additional values, see Driver Information Module (DIM) Signal Description .
  Fig 2: Breakout Box

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

  Courtesy of VOLVO CARS OF NORTH AMERICA.

The ohmmeter should display approximately 0 Ω. 

• OK 

  OKAY:  Troubleshooting has been completed.

• NOT OK 

  Refer to Checking For Open Circuits, Contact Resistance And Oxidation