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Home >> Lexus >> 2008 >> SC 430 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> SFI System >> DTC P0101: Mass Air Flow Circuit Range / Performance Problem >> Confirmation Driving Pattern
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Confirmation Driving Pattern

HINT:

Performing this confirmation pattern will activate the mass air flow performance monitor.

Fig 1: Vehicle Speed Driving Pattern
G04828065Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Connect the Techstream to the DLC3.
  2. Turn the ignition switch ON.
  3. Turn the tester ON.
  4. Clear DTCs (See DTC CHECK / CLEAR ).
  5. Start the engine, and warm it up until the engine coolant temperature reaches 70°C (158°F) or higher.
  6. Drive the vehicle at approximately 62 mph (100 km/h) for 20 seconds or more.
  7. On the tester, enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending and check if any DTCs (any pending DTCs) are set.