Lock-Up Function

• Check that engine speed does not change sharply when the accelerator pedal is lightly depressed when driving on flat roads at normal speed in the D range.
• Check slip lock up with following procedures. Subaru Select Monitor is needed for checking.

Before start checking, check that no DTC is displayed. Perform the collective action with DTC and make sure that no more DTC is displayed, and then start the checking.

1. Perform the check on flat and straight road or free roller.
   NOTE:

   • Slip lock up does not operate when the vehicle is lifted up, because of not occurring surface resistance.
   • Also when checking on the free roller, check with depressing the foot brake lightly to make the checking easier, because the surface resistance will be deficient.
2. Connect the Subaru Select Monitor.
3. Check the ATF temperature using Subaru Select Monitor.
   NOTE:

   • ATF temperature is between 50 - 100°C (122 - 212°F)
   • When the temperature is low, warm-up the ATF by running the vehicle or etc.
4. Start the engine, so that the lock up duty can be read on data display of Subaru Select Monitor.
5. Drive the vehicle at a constant speed of 35 - 40 km/h (22 - 25 MPH).
6. Read the lock up duty while vehicle is running.

Standard value: 25 - 45% 

• Slip lock up control is not operating when the lock up duty is less than 5%, or when the lock up duty goes down immediately after starts rising. On these cases, improper ATF or deterioration of ATF may be the cause. Check the amount of ATF or replace them, and then recheck it.