Accent L4-1.6L (2003)
Fluid - A/T: All Technical Service Bulletins
A/T - 2-3 Shift Flare or Shift Shudder
SOURCE: Hyundai Tech Net Times Volume 13 Issue 6 2003
TITLE: AUTOMATIC TRANSAXLE 2-3 SHIFT FLARE OR SHIFT SHUDDER
APPLIES TO: ALL
SERVICE TIP:
If you are servicing a vehicle with 2-3 shift flare (engine speed increases during the 2-3 shift) or shift shudder, follow the procedure shown below:
1. CHECK ATF LEVEL:
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Attach a Hi-Scan Pro and select "Automatic Transaxle" and "Current Data" menus and "Oil Temperature Sensor".
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Drive the vehicle until the ATF temperature is at normal operating temperature (158-212°F or 70-100° C).
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Place the shift lever in "Neutral" and check the ATF level on the dipstick.
Add SPIII ATF to bring the level to the top of the "FULL" mark.
2. CHECK FOR APPLICABLE TCM REPROGRAMS AND MODIFIED ATM:
3. CHECK FOR MODIFIED TCMS:
4. CHECK TRANSAXLE OIL TEMPERATURE SENSOR:
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Attach the Hi-Scan Pro to the DLC and select "Hyundai Vehicle Diagnosis" and "Automatic Transaxle" menus. Check "Temperature Sensor"
when the ATF is cold and hot. If the oil temperature sensor does not indicate as shown below, replace the sensor:
5. DISCONNECT THE BATTERY AND PERFORM ADAPTIVE LEARNING:
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Drive the vehicle until the ATF temperature is above the temperature shown.
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Accelerate the vehicle through several 1-2-3-4 upshifts at small throttle openings (approximately 25-30% TPS) until shift flare or shift shudder no