Intermittent fault

Check the cable between control module terminal #13 and fuel pump (FP) terminal 2. Check for a short-circuit to supply voltage.

Remedy as necessary.

Other information:

To access the control module or connect the breakout box, see Connecting the breakout box
To access or replace the fuel pump (FP), For cars manufactured up to w38 2001 inclusive, see Fuel pump, auxiliary heater, replacing For cars manufactured from w39 2001 inclusive, see Fuel pump auxiliary heater, replacing
With the ignition on and the fuel pump (FP) connector disconnected, the voltage between fuel pump (FP) terminal 2 (control module side) and ground must be 0 V
For other values, see Signal specification
See Checking wiring and terminals

Fig 1: Identifying Fuel Pump Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.