Checking the wiring

Check the cable between engine control module (ECM) terminal #B34 (#B44) and leak diagnostic unit terminal #2. Check for an open-circuit.

Remedy as necessary.

Other information 

• See Connecting the breakout box
• For information about signals for 5 cylinder engines: Signal specification or Signal specification
• See Leak diagnostic pump, replacing
• See Contents

Fig 1: Identifying Leak Diagnostic Unit Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Leak Diagnostic Pump

Courtesy of VOLVO CARS OF NORTH AMERICA.

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  Refer to Information