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HOMESERVICE MANUALSSCION2008XD AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCE2ZR-FE ENGINE CONTROL SYSTEMSFI SYSTEMDTC P2A00 A/F SENSOR CIRCUIT SLOW RESPONSE (BANK 1 SENSOR 1)CONFIRMATION DRIVING PATTERN
2008 Scion xD Automatic

Confirmation Driving Pattern

2008 Scion xD AutomaticSECTION Confirmation Driving Pattern

HINT:

This confirmation driving pattern is used in the "PERFORM CONFIRMATION DRIVING PATTERN" procedure of the following diagnostic troubleshooting procedure.

Performing this confirmation pattern will activate the Air Fuel Ratio (A/F) sensor response monitor.

Fig 1: Vehicle Speed Graph
G05386814Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Connect a Techstream to the DLC3.
  2. Turn the ignition switch to ON.
  3. Turn the tester ON.
  4. Clear DTCs (See DTC CHECK / CLEAR  ).
  5. Select the following menu items: Powertrain / Engine and ECT / Monitor / O2 Sensor / Details.
  6. Check that RES RATE B1S1 is Incomplete.
  7. Start the engine and warm it up.
  8. Drive the vehicle at between 40 km/h and 120 km/h (25 mph and 75 mph) for 3 minutes. However, the vehicle should be driven at a constant speed.
  9. Check the monitor result values on the tester by selecting the following menu items: Powertrain / Engine and ECT / Monitor / O2 Sensor / Details / RES RATE B1S1 / Details.
  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: Powertrain / Engine and ECT / Trouble Codes / Pending.
  13. Check if any DTCs (any pending DTCs) are set.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.