AUTOMATIC TRANSMISSION SYSTEM INITIALIZATION


  1. PERFORM ROAD TEST TO ALLOW TCM 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 parts replaced, perform the road test shown below.

        Part Replaced Road Test (w/ Shift Paddle Switch) Road Test (w/o Shift Paddle Switch)

        • Automatic transmission assembly

        • TCM

        • Valve body assembly

        • Shift solenoid valve SL3

        • Engine assembly

        • ECM

        Perform pattern 1, 2 and 3


          Pattern 1:*1

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


          Pattern 2:

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


          Pattern 3:*2

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

        Perform pattern 1 and 4


          Pattern 1:*1

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


          Pattern 4:*3

        • With S4 range selected, after gradually accelerating to 30 km/h (19 mph) or more, gradually decelerate to approx. 10 km/h (6 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 shift lever in D, after gradually accelerating to 50 km/h (31 mph) or more, gradually decelerate to approx. 30 km/h (19 mph)


          Pattern 3:*2

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

        Perform pattern 1


          Pattern 1:*1

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

        Tech Tips


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

        • *3: After gradually accelerating over a distance of approximately 40 m (131.2 ft.) for a period of approximately 8 seconds, gradually decelerate over a distance of approximately 20 m (65.6 ft.) for a period of approximately 5 seconds.

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

        A0019QZE02

        Tech Tips


        • *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 or ECM.

    • Reset Memory can be performed only with the intelligent tester.

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

    Tech Tips

    The TCM memorizes the vehicle conditions when the ECT controls the automatic transmission assembly and engine assembly.


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


      1. Turn the engine switch off.

      2. Connect the intelligent tester to the DLC3.

      3. Turn the engine switch on (IG).

      4. Turn the intelligent tester on.

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

        Note

        After performing Reset Memory, be sure to perform Road Test described previously.