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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, diagnose the ETACS. 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) Check if the DTC is set. (4) Turn the ignition switch to the "LOCK" (OFF) position. Q:Is the DTC set? YES: Diagnose the ETACS, (Refer to GROUP 54Ad, ETACS, NO: Go to Step 4. SUPPLEMENTAL RESTRAINT SYSTEM (SRS) 52B-255 SRS AIR BAG DIAGNOSIS |