Checking The Wiring

Check the cable between engine control module (ECM) terminal #B33 (#C33) and leak diagnostic unit terminal #1. Check for a short-circuit to ground.

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

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  Refer to INFORMATION