Checking The Wiring

Check the signal cable. Check for a short-circuit to ground. Take readings between:

• Engine control module (ECM) #B34 (#C44) and leakage diagnostic unit #2.

Remedy as necessary.

Other information 

• see CONNECTING THE BREAKOUT BOX
• For 5 cylinder turbocharged engines 2005-, see SIGNAL SPECIFICATION .
• For 6 cylinder engines 2005-, see SIGNAL SPECIFICATION .
• see LEAK DIAGNOSTIC PUMP, REPLACING
• see CHECKING WIRING AND TERMINALS

Fig 1: Identifying Leak Diagnostic Unit Connector Terminals

Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying Leak Diagnostic Pump

Courtesy of VOLVO CARS CORPORATION

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  Refer to INFORMATION