Checking the ground terminal

WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. 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 module disconnected.
Switch off all equipment that takes power from the battery (courtesy lighting, radio etc).
Connect an ohmmeter between terminal #B21 on the breakout box and the battery negative terminal.

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

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

The ohmmeter should read approximately 0 Ω.

OK
FAULT NOT FOUND: Troubleshooting has been completed.
NOT OK
Refer to Checking For Open-Circuits, Contact Resistance And Oxidation