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SWS - Troubleshooting 54B-25 Inspection Procedure I-1 The room lamps do not come ON or OFF normally. Probable cause The ETACS-ECU controls the room lamp ON/OFF operation based on input signals from the following. Ignition switch (ACC) D Ignition switch (IG1) D Driver’s door switch D Door switch fault D Driver’s door lock actuator fault D ETACS-ECU fault D Harness or connector fault D Driver s door switch D All door switches D Driver’s door lock actuator If the room lamp ON/OFF operation is defective, either one of the above input circuit NG Check the defective input circuit. (Refer to P.54B-8, Defects Found by Input Signal Check). OK OK NG Check the trouble symptoms. NG Repair Check the following connectors: C-226, C-218, D-03, D-05 NG Repair When the ignition switch is in the LOCK (OFF) position, do the hazard lamps work? NO Check ETACS-ECU battery power circuit system (Refer to P.54B-33, Inspection Procedure K-1). YES Check the front and rear room lamp bulbs. OK Check the MUT-II input signals. Ignition switch (ACC) D Ignition switch (IG1) D Driver’s door switch D All door switches NG Replace ETACS-ECU. OK Check the trouble symptoms. Check the harness between ETACS-ECU and the front and rear room lamps. |