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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 Diagnosis
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 laser radar (FCM-ECU) (Refer to GROUP 54A - FCM-LS, Laser
Radar ), 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 engine-ECU, go to Step 4.
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Intermittent malfunction in CAN bus line between engine-ECU and FCM-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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This diagnosis is complete.
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