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MMCS TSB Revision CHASSIS ELECTRICAL 54A-477 • MB991824: Vehicles Communication Interface (V.C.I.) • MB991827 M.U.T.-III USB Cable • MB991910 M.U.T.-III Main Harness A (Vehicles with CAN communication system) STEP 1. Using scan tool MB991958, diagnose the CAN bus CAUTION To prevent damage to scan tool MB991958, always turn the Scan Tool (M.U.T.-III) ." (2) Turn the ignition switch to the "ON" position. YES : Go to Step 2. ). STEP 2. Using scan tool MB991958, read the A/C-ECU YES : Troubleshoot the A/C. (Refer to GROUP 55A, Manual A/C Diagnosis GROUP 55B, Auto A/C NO : Go to Step 3. STEP 3. Using scan tool MB991958, read the ETACS YES : Go to Step 4. AC608435 Data link connector MB991827 MB991824 MB991910 AB |