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THEFT ALARM TSB Revision CHASSIS ELECTRICAL 54A-857 STEP 10. Check ETACS-ECU connector C-317 for loose, YES : Go to Step 11. STEP 11. Check the Wiring harness between ETACS-ECU • Check the input/output lines for open circuit and short cir- cuit. Q: Is the check result normal? YES : Go to Step 12. connector C-317 and center panel unit connector STEP 12. Retest the system. YES : The trouble can be an intermittent malfunction (Refer to GROUP 00, How to use − How to Cope with Intermittent Malfunction NO : Replace the ETACS-ECU. Inspection Procedure 2: The interior alarm does not work normally while the theft-alarm is triggered. CAUTION Before replacing the ECU, ensure that the power . TECHNICAL DESCRIPTION (COMMENT) If the interior alarm does not work normally, the input . TROUBLESHOOTING HINTS • The ETACS-ECU may be defective • Combination meter may be defective • The wiring harness or connectors may have loose, corroded, or damaged terminals, or termi- DIAGNOSIS Required Special Tools: • 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 CAN communication system) |