LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2009 >> Tacoma PreRunner, 2D Pickup >> Repair and Diagnosis >> Engine Performance >> Engine Control System (2TR-FE) >> SFI System >> DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1) >> Confirmation Driving Pattern
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Confirmation Driving Pattern

HINT:

Performing this confirmation pattern will activate the catalyst monitor. This is very useful for verifying the completion of a repair.

Fig 1: Vehicle Speed Driving Pattern
G06080443Courtesy 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 (if set).
  5. Enter the following menus: Powertrain/Engine and ECT/Monitor.
  6. Check that Catalyst/Status 2 is Incomplete.
  7. Start the engine and warm it up.
  8. Drive the vehicle at between 40 mph and 70 mph (64 km/h and 113 km/h) for at least 10 minutes.
  9. Those items will change to Complete as Catalyst monitor operates.
  10. Enter the following menus: Powertrain/Engine and ECT/Trouble Codes/Pending.
  11. Check if any DTCs (any pending DTCs) are set.

    HINT:

    If Catalyst does not change to Complete, and any pending DTCs fail to set, extend the driving time.