Checking The Wiring

Check the signal cable. Check for a short-circuit to ground.

Take readings between:

• Engine Control Module (ECM) #B45 (#C45) and leakage diagnostic unit #2.

Remedy as necessary.

Other information 

• see CONNECTING THE BREAKOUT BOX
• see SIGNAL SPECIFICATION
• see LEAK DIAGNOSTIC PUMP
• see CHECKING WIRING AND TERMINALS

Fig 1: Identifying Leak Diagnostic Unit Connector Terminals

Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying Volvo Leak Detection Pump (Leak Diagnostic Unit)

Courtesy of VOLVO CARS CORPORATION

• Continue 

  Refer to INFORMATION