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AUTOMATIC TRANSAXLE DIAGNOSIS TSB Revision AUTOMATIC TRANSAXLE 23A-171 STEP 1. Using scan tool MB991502, read the A/T CAUTION To prevent damage to scan tool MB991502, always turn the Q: Is the A/T diagnostic trouble code number "54" output? , code number 54: A/T control relay system. NO : Go to Step 2. STEP 2. Using scan tool MB991502, check actuator test Second 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 : This malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/Inspection Service − How to Cope with Intermittent Malfunction NO : Go to Step 3. AC003081AC MB991502 DATA LINK AC003081AC MB991502 DATA LINK |