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- Use M.U.T.-III to perform CAN bus line diagnosis.
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Q.
Is the check result normal?
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Repair CAN bus line (Refer to GROUP 54C - Troubleshooting - CAN
Bus Diagnostics Table ). After repairing CAN bus line, go to
Step 4.
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Confirm again whether the diagnosis code is set in the engine-ECU.
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- Erase the set diagnosis code.
- Ignition switch: LOCK (OFF) → ON
- Confirm whether the diagnosis code is set.
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Q.
Is diagnosis code set?
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After replacing ASC-ECU, go to Step 4.
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Confirm again whether the diagnosis code is set in the engine-ECU.
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- Erase the set diagnosis code.
- Ignition switch: LOCK (OFF) → ON
- Confirm whether the diagnosis code is set.
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Q.
Is diagnosis code set?
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Replace engine-ECU, go to Step 4.
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Intermittent malfunction in the CAN bus line between the engine-ECU and the ASC-ECU
(Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How
to Cope with Intermittent Malfunctions ).
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Confirm again whether the diagnosis code is set in the engine-ECU.
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- Erase the set diagnosis code.
- Ignition switch: LOCK (OFF) → ON
- Confirm whether the diagnosis code is set.
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Q.
Is diagnosis code set?
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