Checking The Wiring

Check the cable between engine control module (ECM) terminal #B23 (#C23) and leak diagnostic unit terminal #2. Check for a short-circuit to ground. Check for an open-circuit.

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