Checking for air leakage

Fig 1: Identifying Ignition In Off Position

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off.

Check the intake system for air leakage and loose charge-air pipe.

See Air leakage in the intake system, checking

Does the problem persist? 

• YES 

  Refer to Checking hoses and the turbocharger (TC) control valve 

• NO 

  Refer to Verification