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⦆ The wiring harness or connectors may have loose, DIAGNOSIS Required Special Tools: ⦆ MB992006: Extra fine probe ⦆ MB991223: Harness set ⦆ MB991958: Scan Tool (M.U.T.-III Sub Assembly) ⦆ MB991824: Vehicle Communication Interface (V.C.I.) ⦆ MB991827: M.U.T.-III USB Cable ⦆ MB991910: M.U.T.-III Main Harness A (Vehicles with 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 ETACS-ECU related DTC is set. (4) 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 2. STEP 2. Using scan tool MB991958, Check the configuration (1) Turn the ignition switch to the "ON" position. (2) Use the ETACS-ECU configuration function to check that the (3) Turn the ignition switch to the "LOCK" (OFF) position. Q:Is the "Alarm" set to "Enable"? YES: Go to Step 3. NO: Use the ETACS-ECU configuration function to set the "Alarm" to "Enable" (Refer to P.54Af-27). ALARM SYSTEM 54Af-17 DIAGNOSIS |