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Home >> Volvo >> 2004 >> S80 Base, 2.5 59, FWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control Module (ECM) Diagnostic Trouble Codes - 6 Of 11 >> ECM-4010 Leak Diagnostic Unit, Valve. Signal Too Low (B5254T2; 2004) >> Signal too low >> Checking the wiring

Checking the wiring

Check the signal cable for the valve between control module terminal #B40 (#B50) and leak diagnostic unit terminal #3. Check for a short-circuit to ground.

Remedy as necessary.

Other information: 

Fig 1: Identifying Leak Diagnostic Unit Connector Terminals
GLL104218Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Ohmmeter
GLL101042Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 3: Identifying Leak Diagnostic Pump
GLL105774Courtesy of VOLVO CARS OF NORTH AMERICA.