Checking The Mass Air Flow (MAF) Sensor

Fig 1: Engine Start Verification

GLL101038

Courtesy of VOLVO CARS CORPORATION

Fig 2: Checking Connector

GLL101069

Courtesy of VOLVO CARS CORPORATION

Engine running.
Check and compare the calculated air mass with the actual, read-out from mass air flow sensor. Try measuring at different speeds (RPM).

HINT: Differences of more than 20 % between the signals indicate a defective mass air flow sensor.

Remedy as necessary.

NOTE:
When replacing mass air flow sensor. Repeat the check to verify that the replacement solved the problem.
1. For more information about current fuel compensation:
  Refer to READ-OUT OF TOTAL FUEL COMPENSATION
2. To Continue:
  Refer to RESETTING ADAPTATION
Fig 3: Identifying VCT2000 Diagnostic Tool Symbol In VIDA (Volvo Scan Tool)
Courtesy of VOLVO CARS CORPORATION