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SYMPTOM PROCEDURES TSB Revision SIMPLIFIED WIRING SYSTEM (SWS) 54B-115 STEP 1. Use scan tool MB991958 to select "ECU COMM Check the following ECUs: • ETACS-ECU • Column switch (column-ECU) CAUTION To prevent damage to scan tool MB991958, always turn the monitor ." (2) Turn the ignition switch to the "LOCK" (OFF) position. below to display "ECU COMM Check." (4) Scan tool MB991958 should show "OK" on the "ECU COMM Check" menus for both the "ETACS ECU" and the Q: Is "OK" displayed for both the "ETACS ECU" and "COLUMN ECU" menus? Inspection Procedure A-3 "Communication with the "NG" is displayed for the "COLUMN ECU" menu : Refer to Inspection Procedure A-2 "Communication with the AC305411AB MB991910 DATA LINK CONNECTOR MB991827 MB991824 MB991806 MB991812 AC302210 COLUMN SWITCH COLUMN SWITCH MB991812 AB |