Mass Air Flow Meter On-Vehicle Inspection

Engine Hybrid System. Corolla. Zre142 Aze141
2Az-Fe Engine Control. Corolla. Zre142 Aze141

  1. INSPECT MASS AIR FLOW METER

Mass Air Flow Meter -- On-Vehicle Inspection


NOTICE:
  1. Perform the mass air flow meter inspection in accordance with the procedure below.
  2. Only replace the mass air flow meter when any foreign matter adheres to the sensor and both MAF values in the Data List (with the engine stopped) are not within the normal operating range.


1. INSPECT MASS AIR FLOW METER

  1. Read the values using the Techstream (MAF).

    NOTICE:
    1. Perform the inspection with the vehicle indoors and on a level surface.
    2. Perform the inspection of the mass air flow meter while it is installed into the air cleaner case (installed on the vehicle).
    3. During the test, do not use an exhaust air duct on the exhaust pipe.

    1. Connect the Techstream to the DLC3.

    2. Turn the ignition switch to ON (do not run the engine).

    3. Turn the Techstream on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List / MAF.

    5. Wait 30 seconds, and read the values on the Techstream.

      Standard Condition:
      Tester Display
      		Condition
      		Standard Condition
      MAF
      1. Engine not running
      2. 30 seconds after ignition switch is turned to ON
      		Less than 0.48 g/sec
      1. If the result is not as specified, replace the mass air flow meter.
      2. If the result is within the specified range, remove and inspect the mass air flow meter (COROLLA_ZRE142 RM0000033BP00IX_01_0001.html).