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COMBINATION METER ASSEMBLY TSB Revision CHASSIS ELECTRICAL 54A-72 STEP 1. Using scan tool MB991958, diagnose the CAN bus YES : Go to Step 2. Diagnosis-Can Bus Diagnostic Chart ). On completion, go to Step 4. STEP 2. Using scan tool MB991958, read the ETACS-ECU YES : Diagnose the SWS system by referring to . NO : Go to Step 3. STEP 3. Replace the ETACS-ECU and then recheck the YES : Go to Step 4. STEP 4. Recheck for diagnostic trouble code. 1. Erase the DTC. Q: Is the check result satisfactory? YES : The procedure is complete. AC305412 AB MB991910 DATA LINK CONNECTOR MB991824 MB991827 |