20-AT-020H
Service Bulletin Details
Public Details for: 20-AT-020H
This bulletin provides a procedure to transfer pressure data to the tcu using gds mobile. This procedure is necessary to reduce the transmission learning time and improve the shift quality.
Models from 2019
2019 HYUNDAI SANTA FE |
2019 HYUNDAI SONATA |
Models from 2018
2018 HYUNDAI SONATA |
Technical Service Bulletin SUBJECT: GROUP AUTOMATIC TRANSMISSION NUMBER DATE MODEL SEPTEMBER, 2020 20-AT-020H SONATA (LFa) SONATA (DN8) SANTA FE (TMa) PALISADE (LX2) AUTOMATIC TRANSMISSION OIL PRESSURE DATA TRANSFER – GDS MOBILE (8-SPEED FWD TRANSMISSION) This TSB supersedes TSB 18-AT-015 to add additional models. DESCRIPTION: This bulletin provides a procedure to transfer pressure data to the TCU using GDS Mobile. This procedure is necessary to reduce the transmission learning time and improve the shift quality. After replacing an automatic transmission: Input the data into the TCU using the GDS. After replacing a PCM (ECU/TCU): Back up the oil pressure data from the old TCU into the GDS and then transfer the data to the new TCU. NOTICE Before installing the transmission, the technician should: (1) Use GDS to transfer the pressure characteristics to the TCU or (2) Take a photo of the tag or (3) Record all digits on the tag. The pressure characteristics tag is difficult to read after installation. The oil pressure characteristics bar code location under the air cleaner is shown below. Serial number APPLICABLE VEHICLES: 2018~19 2020~ 2019~ 2020~ Sonata (LFa) 2.0T Sonata (DN8) 1.6T/2.5L Santa Fe (TMa) 2.0T/2.4L Palisade (LX2) 3.8L Warranty Information: Normal warranty applies. NOTE: Labor operation for automatic transmission or PCM (ECU/TCU) replacement includes the time for data transfer. Circulate To: Service Manager, Warranty Manager, Service Advisors, Technicians, Fleet Repair SUBJECT: AUTOMATIC TRANSMISSION OIL PRESSURE DATA TRANSFER I. DATA INPUT – AFTER REPLACING AUTOMATIC TRANSMISSION Oil pressure data input procedure using GDS Mobile 1. From the GDS Mobile home screen, select S/W Management, Automatic Transaxle and Oil pressure characteristics Input (A/T Replacement). Select OK. Select OK and follow the prompts. 2. Select OK and use the QR Reader to read the barcode tag on the transmission. Select OK and follow the prompts. The GDS will transfer the data to the TCU. If the QR Reader did not successfully transfer the data, select SERIAL INPUT and go to Step 3. TSB #: 20-AT-020H Page 2 of 6 SUBJECT: AUTOMATIC TRANSMISSION OIL PRESSURE DATA TRANSFER 3. If the QR Reader did not successfully read the barcode, manually input the transaxle serial number (12 digits) and select Done. If the GDS fails to input the data, manually input the complete pressure characteristics data. Select OK. The GDS will confirm the oil pressure characteristics were input into the TCU. Select OK. 4. Check for DTC and delete any DTC. 5. Reset the automatic transmission adaptive values using GDS, S/W Management, Automatic Transaxle and Resetting Auto T/A Values. Follow the prompts on the GDS. TSB #: 20-AT-020H Page 3 of 6 SUBJECT: II AUTOMATIC TRANSMISSION OIL PRESSURE DATA TRANSFER DATA INPUT - AFTER REPLACING OR EXCHANGING A PCM (ECU/TCU) Oil pressure data backup and input procedure using GDS Mobile: NOTICE If the PCM has been replaced and the oil pressure data has not been input to the new TCM, the shift position indicator lamps on the instrument cluster or shift lever will blink continuously with the ignition on and the engine off. 1. From the GDS Mobile home screen, select S/W Management, Automatic Transaxle and Oil Pressure Characteristics BackUp & Input (TCU Replacement). Select OK and follow the prompts. 2. The GDS will prompt you to backup the pressure characteristics to the GDS. Select Backup. TSB #: 20-AT-020H Page 4 of 6 SUBJECT: AUTOMATIC TRANSMISSION OIL PRESSURE DATA TRANSFER NOTICE If the GDS cannot communicate with the old TCU, you must locate the oil pressure characteristics tag under the air cleaner and manually input the values into the GDS. 3. The GDS will prompt you to back up to the Scan Tool. Select OK. The GDS will confirm the oil pressure characteristics of the old TCU was backed up. Select OK. Turn the ignition off and install the new PCM (ECU/TCU). 4. From the GDS Mobile home screen, select S/W Management, Automatic Transaxle and Oil Pressure Characteristics BackUp & Input (TCU Replacement). Select OK and follow the prompts. Select Input. TSB #: 20-AT-020H Page 5 of 6 SUBJECT: AUTOMATIC TRANSMISSION OIL PRESSURE DATA TRANSFER 5. The GDS will prompt you to input the oil pressure characteristics to the new TCU. Select OK. The GDS will confirm the oil pressure characteristics were input to the new TCU. Select OK. 6. Check for DTCs and delete any DTCs. 7. Confirm proper operation of the vehicle. TSB #: 20-AT-020H Page 6 of 6