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AUTOMATIC TRANSAXLE DIAGNOSIS TSB Revision AUTOMATIC TRANSAXLE 23A-299 INSPECTION PROCEDURE 8: Shift Shock when Shifting from "N" to "D," "N" to "R" and Long Delay . COMMENT . TROUBLESHOOTING HINTS (The most likely • Abnormal line pressure • Malfunction of the oil pump • Malfunction of the valve body • Malfunction of the PCM DIAGNOSIS STEP 1. Check the hydraulic pressure. transaxle is in 1st, 2nd or reverse. Check if each hydraulic pressure is within the standard value. Refer to Hydraulic Pressure Test. (2) If some elements pressures are within the standard value and some are not, recheck the symptom. Q: Are all hydraulic pressures within the standard value? YES : Go to Step 3. STEP 2. Adjust line pressure. Adjust line pressure. Refer to , Line Pressure Adjust- ment. Then check the symptom. YES : The procedure is complete. STEP 3. Check when shift shock occurs. When engaging from "N" to "D" and "N" to "R" : Go to Step 4. When the vehicle starts moving : Go to Step 5. STEP 4. Replace the oil pump. (2) Replace the oil pump. (Oil pump cannot be repaired). Refer to GROUP 23B, Transaxle . Then check the symptom. Q: Is the symptom eliminated? YES : The procedure is complete. AC001865 |