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DIAGNOSTIC TROUBLE CODE PROCEDURES SMART WIRING SYSTEM (SWS) USING SWS MONITOR 54C-38 <A/T> or the engine-ECU <M/T>. For diagnosis − 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 <A/T> or engine-ECU <M/T> • Malfunction of the ETACS-ECU • Malfunction of the CAN bus DIAGNOSTIC PROCEDURE Step 1. MUT-III CAN bus diagnostics 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. Step 2. Check for engine control diagnosis code. Check whether the engine control-related diagnosis Q: Is the check result normal? YES : Go to Step 3. NO : Engine (Refer to GROUP 13A − ). Step 3. MUT-III diagnosis code Check if a diagnosis code, which relates to CAN • Combination meter U1100: Engine-related time-out diagnosis code • Multi-display U1100: Engine-related time-out diagnosis code Q: Is the check result normal? YES : Go to Step 5. NO : Go to Step 4. Step 4. Check whether the diagnosis code is Check again if the diagnosis code is set. 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 engine-A/T-ECU, and then go Step 5. Check whether the diagnosis code is Check again if the diagnosis code is set. 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. |