Checking ground point

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Volvo S80, 2005 Volvo S80, 2004 Volvo S80, 2003 Volvo S80, and 2002 Volvo S80. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Disconnecting Control Unit

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition off.
Control unit disconnected.
Switch off all battery loads such as entrance lights and radio.
Connect an ohmmeter between the battery negative terminal and #3 on the test box.

Fig 3: Breakout Box
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 4: Identifying Ohmmeter
Courtesy of VOLVO CARS OF NORTH AMERICA.

The ohmmeter should display approximately 0.

OK
FAULT NOT FOUND: Troubleshooting has been completed.
NOT OK
Refer to Checking for open circuits, contact resistance and oxidation