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Home >> Toyota >> 2007 >> Yaris S, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> SFI System >> DTC P2A00 A/F Sensor Circuit Slow Response (Bank 1 Sensor 1) >> Confirmation Driving Pattern
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Confirmation Driving Pattern

HINT:

Performing this confirmation pattern will activate the A/F sensor response monitor.

Fig 1: Identifying Vehicle Speed Graph
G04828271Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Intelligent Tester Display - Monitor Result
G04828272Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Connect an intelligent tester to the DLC3.
  2. Turn the ignition switch to ON.
  3. Turn the tester ON.
  4. Clear DTCs (where set) (See DTC CHECK/CLEAR  ).
  5. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / MONITOR INFO / MONITOR RESULT.
  6. Check that RES RATE B1S1 is INCOMP.
  7. Start the engine and warm it up.
  8. Drive the vehicle at a constant speed of between 25 mph and 75 mph (40 km/h and 120 km/h) for 3 minutes.
  9. Check the monitor result values on the intelligent tester by selecting the following menu items: DIAGNOSIS / ENHANCED OBD II / MONITOR INFO / MONITOR RESULT / RES RATE B1S1.
  10. If the values indicated on the tester do not change, perform READINESS MONITOR DRIVE PATTERN for the A/F sensor and the heated oxygen sensor (See READINESS MONITOR DRIVE PATTERN  ).

    HINT:

    Completion of all A/F sensor monitors is required to change the value in RES RATE B1S1.

  11. Note the value of the RES RATE B1S1.
  12. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / PENDING CODES.
  13. Check if any DTCs (any pending DTCs) are set.