Is the DTC present ?
 | ▶ Substitute with a known-good PCM/TCM and check for proper operation.If the problem is corrected, replace PCM/TCM and then go to "Verification of Vehicle Repair" procedure. |
 | ▶ Fault is intermittent caused by poor contact of PCM/TCM and DTC was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair as necessary and go to "Verification Vehicle Repair" procedure. |
※ How to perform Initial Learning
If you replace the automatic transmission or TCU, or if you overwrite the TCU software, be sure to initialize the learned values and perform initial learning.
Step 1) Warm-up
Raise the ATF temperature by leaving the vehicle idling or performing city drive. Check the ATF temperature using the Scan-tool and make sure it is between 50°C( 122 °F) and 120°C( 248 °F). If the ATF temperature is outside this range, work to bring the range.
Don't raise the oil temperature by stalling the engine.
(Reference)
If the oil temperature is not between 50°C( 122 °F) and 120°C ( 248 °F), initial learning can not be performed. Before learning, check for variable speed shock or shift shock.
Step 2) How to transmission oil pressure Learning
Please do more than 3 times as blow procedure.
STEP 3) Garage shift control learning
In "D", with the throttle opening between 25 and 35%, drive until you reach 8th gear and a vehicle speed at 80Km/h or higher. Then, release the accelerator pedal and coast, and bring the vehicle to a stop in 60 seconds minimum. Repeat this procedure 10 times.
Step 4) Garage shift learning("N→D→N→R")
With the vehicle standing still, depress the brake and keep the shift lever in "N" for 3seconds. Then, shift from "N" into "D", and maintain this condition for 3seconds.
Repeat this procedure 5 times. Then repeat it 5 times in the same way for "R".
STEP 5) Check learning results
Check that variable speed shock and shift shock have decreased compared to conditions before learning.How to perform "N" position learning.
