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DIAGNOSTIC TROUBLE CODE PROCEDURES SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR 54B-69 Step 5. Check whether the diagnosis code is not reset. Q: Is the check result normal? YES : A poor connection, open circuit or other intermittent malfunction is present in the − How to Use Troubleshooting/Inspection Service NO : Replace the ETACS-ECU, and then go to Step 6. Check whether the diagnosis code is Recheck if the diagnosis code is set. not reset. Q: Is the check result normal? YES : The procedure is complete. NO : Return to Step 1. Diagnosis code No.12 Engine-A/T-ECU time-out (related to A/T) CAUTION If diagnosis code No.12 is set in the ETACS, CAUTION Whenever the ECU is replaced, ensure that the TROUBLE JUDGMENT • The ETACS-ECU receives engine and transmission control-related signals from the NOTE: For M/T-vehicles, diagnosis code No.12 does COMMENTS ON TROUBLE SYMPTOM Current trouble • Connector(s) or wiring harness in the CAN bus lines between the ETACS-ECU and the Past trouble • If diagnosis code No.12 is stored as a past trouble, carry out diagnosis with particular the engine-A/T-ECU. For diagnosis procedures, − How to Use Troubleshooting/Inspection Service Points NOTE: For a past trouble, you can not find it by the MUT-III CAN bus diagnostics even if there is any and check the CAN bus lines. You can narrow − CAN Bus Line Diagnostic Flow POSSIBLE CAUSES • Malfunction of the engine-A/T-ECU • Malfunction of the ETACS-ECU • Malfunction of the CAN bus DIAGNOSTIC PROCEDURE Step 1. MUT-III CAN bus diagnostics Use the MUT-III to diagnose the CAN bus lines. Q: Is the check result normal? YES : Go to Step 2. NO : Repair the CAN bus line (Refer to GROUP − Diagnosis ). Repair the CAN bus line and go to Step 6. |