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STEP 1. Using scan tool MB991958, read the diagnostic 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 scan (2) Turn the ignition switch to the "ON" position. (3) Check whether the headlight automatic leveling-ECU related (4) Turn the ignition switch to the "LOCK" (OFF) position. Q:Is DTC set? YES: Perform the troubleshooting of when the diagnostic trouble code is set (Refer to P.54Ac-59). NO: Go to Step 2. STEP 2. Using scan tool MB991958, check other system (1) Turn the ignition switch to the "ON" position. (2) Set scan tool MB991958 to the actuator test mode. ⦆ Item 8: Indicator2 (3) Turn the ignition switch to the "LOCK" (OFF) position. Q:Is the check result normal? YES: Go to Step 3. NO: Replace the combination meter. STEP 3. Retest the system. Q:Is the check result normal? YES: The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/ NO: Replace the headlight automatic leveling-ECU. HEADLIGHT AUTOMATIC LEVELING ECU TERMINAL VOLTAGE M15410900034USA0000010000 LIGHTING 54Ac-97 DIAGNOSIS |