AUTOMATIC TRANSMISSION SYSTEM(for 2GR-FKS) INITIALIZATION


  1. PERFORM ROAD TEST TO ALLOW ECM TO LEARN

    CAUTION:


    • Perform the following procedures while strictly observing all traffic laws and speed limits.

    • Do not accelerate or decelerate rapidly.


    1. The Road Test procedure is as follows:


      1. Warm up the engine.

      2. According to the replaced parts, perform the appropriate road test shown below.

        Replaced Parts Road Test

        • Automatic transmission assembly

        • ECM

        • Transmission valve body assembly

        • Shift solenoid valve SL3

        • Engine assembly

        Perform pattern 1, 2 and 3

        Pattern 1:*1


        • With the shift lever in D, after gradually accelerating to 50 km/h (31 mph) or more, gradually decelerate to approximately 30 km/h (19 mph)

        Pattern 2:


        • When driving at approximately 50 km/h (31 mph) with the D4 range selected, release the accelerator pedal to allow the vehicle to decelerate gradually to approximately 10 km/h (6 mph).

        Pattern 3:*2


        • Accelerate to a speed higher than 50 km/h (31 mph). While gradually decelerating with the shift lever in M and 5th gear selected, downshift to 4th gear at approximately 50 km/h (31 mph), to 3rd gear at approximately 40 km/h (25 mph), and to 2nd gear at approximately 30 km/h (19 mph).

        • Shift solenoid valve SL1

        • Shift solenoid valve SL2

        • Shift solenoid valve SL4

        • Shift solenoid valve SL5

        Perform pattern 1 and 3

        Pattern 1:*1


        • With the shift lever in D, after gradually accelerating to 50 km/h (31 mph) or more, gradually decelerate to approximately 30 km/h (19 mph)

        Pattern 3:*2


        • Accelerate to a speed higher than 50 km/h (31 mph). While gradually decelerating with the shift lever in M and 5th gear selected, downshift to 4th gear at approximately 50 km/h (31 mph), to 3rd gear at approximately 40 km/h (25 mph), and to 2nd gear at approximately 30 km/h (19 mph).

        Tech Tips


        • *1: After gradually accelerating for a distance of approximately 130 m (426.4 ft.) for a period of approximately 15 seconds, gradually decelerate for a distance of approximately 45 m (147.6 ft.) for a period of approximately 5 seconds.

        • *2: Accelerate the vehicle to a speed slightly higher than 50 km/h (31 mph).

          Move the shift lever to M and select 5th gear.

          Release the accelerator pedal and allow the vehicle to decelerate gradually.

          When the vehicle decelerates to approximately 50 km/h (31 mph), downshift to 4th gear.

          When the vehicle decelerates to approximately 40 km/h (25 mph), downshift to 3rd gear.

          When the vehicle decelerates to approximately 30 km/h (19 mph), downshift to 2nd gear.

        • When decelerating, apply the brakes as necessary to adjust the vehicle speed.

        B003V2RE06

        Note


        • *1: The speed, time and distance values are approximate values.

        • *2: After accelerating, deceleration does not need to be performed immediately.

        • *3: There is no specified time or distance.

      3. Repeat the road tests until the shift shock and engine speed overrun (engine speed flare when shifting) reach an acceptable level.

        Note

        When repeating the acceleration/deceleration cycle of a road test pattern, bring the vehicle to a complete stop before accelerating again.

  2. RESET MEMORY

    Note


    • Perform Reset Memory (AT initialization) when replacing the engine assembly.

    • Reset Memory can be performed only with the GTS.

    • Reset Memory cannot be completed by only disconnecting and reconnecting the cable to the negative (-) battery terminal.

    Tech Tips

    The ECM (ECT) memorizes the vehicle conditions when controlling the automatic transmission assembly and engine assembly.


    1. The "Reset Memory" procedure is as follows:


      1. Turn the engine switch off.

      2. Connect the GTS to the DLC3.

      3. Turn the engine switch on (IG).

      4. Turn the GTS on.

      5. Enter the following menus: Powertrain / Transmission / Utility / Reset Memory.


        Powertrain > Transmission > Utility
        Tester Display
        Reset Memory

        Note

        After performing Reset Memory, be sure to perform "Perform Road Test to Allow ECM to Learn" described earlier.