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- Using M.U.T.-III, perform CAN bus line diagnosis.
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Q.
Is the check result normal?
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Correct CAN bus line (Refer to GROUP 54C - Troubleshooting - CAN Bus Diagnosis Table ), and then go to Step 4.
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- Confirm whether the diagnosis codes are set in the ETACS-ECU.
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Q.
Is the diagnosis code set?
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Perform the troubleshooting of ETACS-ECU (Refer to GROUP 54A - Troubleshooting - Diagnostic Code Chart ).
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Check that the other ECU performing CAN communication with ETACS-ECU sets diagnosis code No. U1117 (Refer to GROUP 54C - CAN communication-related Diagnosis Code Table ).
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Q.
Is the diagnosis code set?
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- Reconfirm whether the diagnosis codes are set in the engine-ECU.
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- Erase the diagnosis codes being set.
- Ignition switch: "LOCK" (OFF) to "ON"
- Confirm whether the diagnosis codes are set.
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Q.
Is the diagnosis code set?
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Intermittent malfunction in CAN bus line between engine-ECU and ETACS-ECU (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
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- Reconfirm whether the diagnosis codes are set in the engine-ECU.
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- Erase the diagnosis codes being set.
- Ignition switch: "LOCK" (OFF) to "ON"
- Confirm whether the diagnosis codes are set.
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Q.
Is the diagnosis code set?
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