Checking the connectors

Check control unit and wire connector (54/3R, 54/10 or 54/11 and 3/126 or 3/127) for contact resistance and oxidation as described in Contact resistance and oxidation , and for a loose contact as described in Loose connections (terminals) .

Check especially for damage.

Additional information: 

• To access the door control unit, see Lock mechanism front side door, replacing .

Fig 2: Identifying Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Ohm Meter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Refer to Checking the wires and components