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STEP 2. Using scan tool MB991958, diagnose the CAN bus ZC501967 AC404789 ZC5019680000 MB991824 MB991827 MB991910 Data link connector To prevent damage to scan tool MB991958, always turn the (1) Connect scan tool MB991958. Refer to "How to connect the (2) Turn the ignition switch to the "ON" position. (3) Diagnose the CAN bus line. (4) Turn the ignition switch to the "LOCK" (OFF) position. Q:Is the CAN bus line found to be normal? YES: Go to Step 3. NO: Repair the CAN bus line. (Refer to GROUP 54D - STEP 3. Using scan tool MB991958, read the diagnostic (1) Turn the ignition switch to the "ON" position. (2) Check whether the ETACS-ECU related DTC is set. (3) Turn the ignition switch to the "LOCK" (OFF) position. Q:Is the DTC set? YES: Diagnose the ETACS-ECU. Refer to GROUP 54Ad, NO: Go to Step 4. STEP 4. Using scan tool MB991958, check actuator test. (1) Connect scan tool MB991958 to the data link connector. (2) Turn the ignition switch to the "ON" position. (3) Set scan tool MB991958 to the actuator test mode. ⦆ Item 7: Indicator1 (4) Turn the ignition switch to the "LOCK" (OFF) position. Q:Is the check result normal? YES: Replace the ETACS-ECU. NO: Replace the combination meter. DIAGNOSIS STANDARD FLOW OF DIAGNOSTIC TROUBLESHOOTING M15410900005USA0000010001 Refer to GROUP 00 - Contents of troubleshooting P. LIGHTING 54Ac-57 DIAGNOSIS |