Checking The Fuel Injection System

Check the intake system for air leakage.

HINT: Air leakage in the intake system can occur through the evaporative emission system (EVAP) valve, the secondary air solenoid valve or the power brake booster. 

Start the engine. Allow the engine to run at idle speed for 10 minutes.

Check the mass air flow (MAF) sensor. Read off its correction factor. The value must be between 2 and 12.

Remedy as necessary.

Other information 

• see CHECK FOR AIR LEAKS IN THE INTAKE SYSTEM
• see MASS AIR FLOW (MAF) SENSOR, REPLACING .

Fig 1: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

Courtesy of VOLVO CARS CORPORATION

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  Refer to VERIFICATION