Checking The Wiring

Check the signal cable for the valve between control module terminal #B40 (#B50) and leak diagnostic unit terminal #3. Check for a short-circuit to ground.

Remedy as necessary.

Other information: 

• see CHECKING WIRING AND TERMINALS
• For resistance values, see COMPONENT SPECIFICATIONS
• To connect the breakout box, see CONNECTING THE BREAKOUT BOX
• For 5 cylinder turbocharged engines -2004, see SIGNAL DESCRIPTION
• For 6 cylinder engines -2004, see SIGNAL SPECIFICATION
• To access or replace the leak diagnostic unit, see LEAK DIAGNOSTIC PUMP, REPLACING

Fig 1: Identifying Leak Diagnostic Unit Connector Terminals

Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying Ohm Meter

Courtesy of VOLVO CARS CORPORATION

Fig 3: Identifying Leak Diagnostic Pump

Courtesy of VOLVO CARS CORPORATION

• Continue 

  Refer to VERIFICATION