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SWS - Troubleshooting 54B-33 Inspection Procedure K-1 When the ignition switch is in the LOCK (OFF) position, no functions work normally. Probable cause Checking of the ETACS-ECU battery power supply circuit system. Probable cause As a fault in this circuit disables ETACS-ECU functions when the ignition switch is in the LOCK (OFF) position, any abnormality in this signal prevents the following functions operating. Lights left ON reminder warning function D Power window timer function D Headlamp automatic cut-off function Or, the following functions operate when the ignition switch is in the ON position only. Diagnosis code reading and input signal check by MUT-II. D Central locking D Headlamps, tail lamps D Hazard lamps D Room lamps D ETACS-ECU fault D Harness or connector fault NG Repair NG Check the harness between ETACS-ECU and battery and repair if necessary. OK Replace ETACS-ECU. OK Check the trouble symptoms. Measure at ETACS-ECU connector C-226. Disconnect the connector and test on the junction box side. D Voltage between terminal 20 and body earth. OK : System voltage NG Check the following connectors: C-226, C-209, C-05, C-135 |