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ASC-ECU receives the vehicle information stored in the ETACS-ECU via CAN bus lines.
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When received invalid coding data from the ETACS-ECU, this diagnosis code is set.
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- Malfunction of ETACS-ECU
- ETACS-ECUs have been interchanged between two vehicles.
- ASC-ECU malfunction
- ASC-ECUs have been interchanged between two vehicles.
- Malfunction of ETACS-ECU coding data
- Engine-ECU malfunction
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Use M.U.T.-III to diagnose the CAN bus lines.
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Q.
Is the check result normal?
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Repair the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ). On completion, go to Step 2.
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This diagnosis is complete.
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Use M.U.T.-III to check whether any coding-related diagnosis code is set by ETACS-ECU or engine-ECU.
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Q.
Is the diagnosis code set?
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Troubleshoot for the relevant diagnosis code.
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Check the part number of ASC-ECU.
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Q.
Is the check result normal?
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Replace the hydraulic unit (integrated with ASC-ECU). Then go to Step 9.
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Refer to GROUP 00 - Coding List.
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Q.
Is the check result normal?
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Replace the ETACS-ECU (Refer to GROUP 54A - ETACS-ECU).
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Check the part number of ETACS-ECU.
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Q.
Is the check result normal?
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Replace the ETACS-ECU (Refer to GROUP 54A - ETACS-ECU).
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Refer to GROUP 00 - Coding List.
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Q.
Is the check result normal?
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Replace the engine-ECU (Refer to GROUP 13A - Troubleshooting/Diagnosis function <4B1>, GROUP 13B - Troubleshooting/Diagnosis function <6B3> or Refer to GROUP 13D - Engine-ECU <4N1>).
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Erase the diagnosis code.
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Replace the hydraulic unit (integrated with ASC-ECU). Then go to Step 9.
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The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/How to Cope with Intermittent Malfunctions).
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Erase the diagnosis code.
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This diagnosis is complete.
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