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Home >> Lexus >> 2010 >> SC 430 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0351-U0101) & Circuit Tests) >> SFI System >> DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1); DTC P0430: Catalyst System Efficiency Below Threshold (Bank 2) >> Confirmation Driving Pattern
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Confirmation Driving Pattern

Fig 1: Vehicle Speed Confirmation Driving Pattern
GTY160717Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Connect the Techstream to the DLC3.
  2. Turn the ignition switch to ON.
  3. Turn the Techstream on.
  4. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
  5. Turn the ignition switch off and wait for at least 30 seconds.
  6. Turn the ignition switch to ON and turn the Techstream on [A].
  7. Enter the following menus: Powertrain / Engine / Monitor.
  8. Check that Catalyst / Status2 is Incomplete.
  9. Start the engine and warm it up (until the engine coolant temperature is 75°C (167°F) or higher) [A].
  10. Drive the vehicle at between 64 and 113 km/h (40 and 70 mph) for 10 minutes or more [B].
  11. The monitor item will change to Complete as Catalyst monitor operates.
  12. Enter the following menus: Powertrain / Engine / Trouble Codes.
  13. Check if any DTCs (pending DTCs) are set.

HINT: 

If the monitor does not change to Complete, and no pending DTCs are stored, extend the driving time.