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DOME LIGHT TSB Revision CHASSIS ELECTRICAL 54A-249 DIAGNOSIS Required Special Tools: • MB991958: Scan Tool (M.U.T.-III Sub Assembly) • MB991824: Vehicle 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. Front dome light operation check YES : Go to Step 2. STEP 2. Using scan tool MB991958, read the diagnostic 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 : Diagnose the ETACS-ECU. Refer to ETACS, . NO : Go to Step 3. AC608435 Data link connector MB991827 MB991824 MB991910 AB |