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SWS - Troubleshooting 54B-5 Code No. 13 Front-ECU-related fault or fault in connecting to ETACS-ECU Probable cause This diagnosis code is output when the signal output from the front-ECU to ETACS-ECU contains an error for 15 consecutive communication cycles (0.6 seconds). The diagnosis code output stops when the signal output from the front-ECU to ETACS-ECU is normal for 15 consecutive communication cycles (0.6 seconds). D front-ECU fault D ETACS-ECU fault D Harness or connector fault NG Repair NG Replace ETACS-ECU. OK Check the trouble symptoms. NG Repair NG Check the harness between the front-ECU and the battery. OK Check the trouble symptoms. NG Replace ETACS-ECU. OK Replace front-ECU. Check the trouble symptoms. NG Check the harness between the front-ECU and ETACS-ECU. NG Repair OK Check the trouble symptoms. OK Replace front-ECU. OK Check the trouble symptoms. NG Check the harness between the front-ECU and the body earth, and repair if necessary. NG Check the following connector: A-11X NG Repair YES Measure at the front-ECU connector A-11X. Disconnect the connector and test on the relay box side. D Continuity between terminal 31 and body earth OK : Continuity confirmed. OK Check the following connectors: A-11X, C-135, C-102, C-228 NG Repair Is code 13 output when the ignition switch is in the ON position? NO Measure at the front-ECU connector A-10X. Disconnect the connector and test on the relay box side. D Voltage between terminal 7 and body earth OK : System voltage NG Check the following connector: A-10X |