On-Vehicle Inspection

CHECK MASS AIR FLOW METER
1. Check the mass air flow value.
  1. Connect the Techstream to the DLC3.
  2. Turn the engine switch on (IG).
  3. Turn the Techstream main switch on.
  4. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / MAF.
  5. Blow air into the MAF meter, and check that the MAF value fluctuates.
    
    Fig 1: Checking MAF Value Fluctuates
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    If the result is not as specified, check the MAF meter. Refer to INSPECTION , or wiring and ECM. Refer to DTC P0102: Mass or Volume Air Flow Circuit Low Input; DTC P0103: Mass or Volume Air Flow Circuit High Input .