Checking for air leakage in the exhaust system

• Check for air leakage according to Checking for air leakage in the exhaust system .

Fig 1: Checking For Air Leakage In Exhaust System

Courtesy of VOLVO CARS OF NORTH AMERICA.

Is there air leakage? 

• YES 

  Refer to Fault-tracing information 

• NO 

  Refer to Cleaning idle air control (IAC) valve connector