Monitor Drive Pattern

1. Perform this drive pattern as one method to simulate the detection conditions of the ECT malfunctions. (The DTCs may not be detected due to the actual driving conditions. And some codes may not be detected through this drive pattern.)

   HINT:

   Preparation for driving

   • Warm up the engine sufficiently. (Engine coolant temperature is 60°C (140°F) or higher).
   • Drive the vehicle when the atmospheric temperature is -10°C (14°F) or higher. (Malfunction is not detected when the atmospheric temperature is less than -10°C (14°F)).

     Notice in driving

   • Drive the vehicle through all gears.

     Stop --> 1st --> 2nd --> 3rd --> 4th --> 5th --> 5th (lock-up ON).

   • Repeat the above driving pattern three times or more.
     NOTE:

     • The monitor status can be checked using the OBD II scan tool. When using the hand-held tester, monitor status can be found in the "ENHANCED OBD II/DATA LIST" or under "CARB OBD II".
     • In the event that the drive pattern must be interrupted (possibly due to traffic conditions or other factors), the drive pattern can be resumed and, in most cases, the monitor can be completed.
     • Perform this drive pattern on a level road as much as possible and strictly observe the posted speed limits and traffic laws while driving.

Fig 1: Monitor Drive Pattern

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

*1: Drive at such a speed in the uppermost gear, to engage lock-up. The vehicle can be driven at a speed lower than that in the above diagram under the lock-up condition.