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HEADLIGHT TSB Revision CHASSIS ELECTRICAL 54A-137 STEP 8. Check the wiring harness between headlight relay • Check the power supply line for open circuit. Q: Is the wiring harness between headlight relay (HIGH) connector A-21X (terminal 2 or 4) and fusible link (36) in connector(s) may have loose, corroded or damaged STEP 9. Retest the system good condition? to GROUP 00, How to use NO : Replace the ETACS-ECU. Inspection Procedure 3: The headlights illuminate at low-beam (high-beam does not illuminate) CAUTION Whenever the ECU is replaced, ensure that the power sup- . TECHNICAL DESCRIPTION (COMMENT) If the headlights illuminate only at low-beam regardless of the . TROUBLESHOOTING HINTS • Malfunction of column switch • Malfunction of the ETACS-ECU • Damaged harness wires and connectors 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) |