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AUTOMATIC TRANSAXLE DIAGNOSIS TSB Revision AUTOMATIC TRANSAXLE 23A-219 STEP 1. Using scan tool MB991502, check actuator test CAUTION To prevent damage to scan tool MB991502, always turn the Underdrive Solenoid Valve. • An operation sound should be heard from solenoid (4) Turn the ignition switch to "LOCK" (OFF) position. Q: Is the solenoid valve operating properly? YES : Go to Step 2. Refer to GROUP 23B, Valve Body . Then confirm that the symptom is eliminated. STEP 2. Check the hydraulic pressure. Hydraulic Pressure Test. Q: Is the hydraulic pressure within the standard value? YES : Go to Step 3. STEP 3. Check the underdrive clutch system. , Transaxle Assembly and GROUP 23B, (2) Blow compressed air into the underdrive clutch oil orifice of the transaxle case, and check if the underdrive clutch piston Q: Is the air pressure maintained? YES : Go to Step 4. AC003081AC MB991502 DATA LINK AC001859 UNDERDRIVE AB |