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AUTOMATIC TRANSMISSION DIAGNOSIS TSB Revision AUTOMATIC TRANSMISSION 23A-323 DIAGNOSIS Required Special Tool: • MB991958: Scan Tool (MUT-III Sub Assembly) • MB991824: V.C.I. • MB991827: MUT-III USB Cable • MB991911: MUT-III Main Harness B STEP 1. Using scan tool MB991958, check actuator test. CAUTION To prevent damage to scan tool MB991958, always turn the following items. a. Item 01: Low-reverse solenoid valve c. Item 03: Second solenoid valve d. Item 04: Overdrive solenoid valve • An audible clicking or buzzing should be heard when the solenoid valves are energized. (4) Turn the ignition switch to the "LOCK" (OFF) position. YES : Go to Step 2. GROUP 23B, Valve Body . Then confirm that the symptom is eliminated. STEP 2. Check the hydraulic pressure. each hydraulic pressure is within the standard value. Refer , Hydraulic Pressure Test. (2) If some elements pressure 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 6. STEP 3. Adjust the line pressure. , Line Pressure Adjustment. Then check the symptom. YES : The procedure is complete. AC307591 AC MB991911 MB991824 MB991827 AC307591 DATA LINK CONNECTOR |