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MMCS TSB Revision CHASSIS ELECTRICAL 54A-501 STEP 6. Using scan tool MB991958, read the CAN box unit YES : Troubleshoot the MMCS (Refer to ). NO : Go to Step 7. STEP 7. Using scan tool MB991958, read the ETACS-ECU YES : Diagnose the ETACS-ECU (Refer to GROUP 54A − ETACS-ECU − Troubleshooting NO : Go to Step 8. STEP 8. Check the service data log for the MMCS service (Refer to (2) Check if the service data log for drive and HDD is displayed. YES (The service data log for drive is displayed.) : Perform Inspection Procedure 8 "CD/DVD cannot be .) or Inspection Procedure 9 "Image of a DVD is Played, but no .) Go to Step 9. YES (The service data log for HDD is displayed.) : Abnormalities relating to high or low temperature may YES (The service data log for AMP is displayed.) : Go to Step 9. NO : Go to Step 9. STEP 9. Perform "Network/Connect Line Check" in the service mode. (Refer to (2) Check if "DVD Drive OK" is displayed. YES : Go to Step 18. |