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MB992006 HAZARD WARNING LAMP SWITCH CHASSIS ELECTRICAL 54A-173 TROUBLESHOOTING STANDARD FLOW OF DIAGNOSTIC M1541501400141 Refer to GROUP 00 − Contents of troubleshooting . TROUBLE SYMPTOM CHART M1541500700332 Trouble symptom Reference page The hazard warning lamps do not illuminate. SYMPTOM PROCEDURES The hazard warning lamps do not illuminate. CAUTION • Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the • When the ETACS-ECU of vehicles without KOS is replaced, the encrypted code of the − How to Register Key ID COMMENTS ON TROUBLE SYMPTOM If the hazard warning lamps do not illuminate, the PROBABLE CAUSES • Malfunction of centre panel unit • Malfunction of the ETACS-ECU • Damaged harness wires and connectors DIAGNOSIS PROCEDURE STEP 1. Check that the turn-signal lamps Q: Is the check result normal? YES : Go to Step 2. NO : Diagnose the headlamps. Refer to . STEP 2. M.U.T.-III data list • Item No. Item name Normal Item 265 Hazard switch ON Turn ON the hazard lamp switch. OK: Normal condition is displayed. Q: Is the check result normal? YES : Go to Step 3. NO : Troubleshoot the ETACS-ECU. Refer to . STEP 3. Retest the system Q: Is the check result normal? MB992006 Extra fine probe Continuity check and voltage Tool Number Name Use |