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Home >> Lexus >> 2007 >> GS 450h >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - DTC P1276 - P3190, DTC U0001 - U0293 >> DTC P2A00 A/F Sensor Circuit Slow Response (Bank 1 Sensor 1); DTC P2A03 A/F Sensor Circuit Slow Response (Bank 2 Sensor 1) >> Confirmation Driving Pattern

Confirmation Driving Pattern

HINT:

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

Fig 1: Vehicle Speed Driving Pattern
G05302450Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Intelligent Tester Display - MONITOR RESULT
G04828272Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Put the engine in inspection mode (see INSPECTION MODE PROCEDURE ).
  2. Connect the intelligent tester to the DLC3.
  3. Turn the tester ON.
  4. Clear DTCs (if set).
  5. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / MONITOR INFO / MONITOR RESULT.
  6. Check that RES RATE B1 S1 is INCMP.
  7. Warm up the engine (Procedure "A").
  8. Drive the vehicle at between 37 mph and 75 mph (60 km/h and 120 km/h) for 5 minutes. However, the vehicle should be driven at a constant speed (Procedure "B").
  9. Check the monitor result values on the intelligent tester by entering the following menus: DIAGNOSIS / ENHANCED OBD II / MONITOR INFO / TEST RESULT.
  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 TEST RESULT.

  11. Note the value of the Monitor Result.
  12. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / PENDING CODES.
  13. Check if any DTCs (any pending DTCs) are set.
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