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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 Chart ). After repairing CAN bus line, go
to Step 6.
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Confirm the diagnosis code is set from the EPS-ECU.
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Q.
Is the diagnosis code set?
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Perform troubleshooting of the EPS (Refer to GROUP 37 - Troubleshooting - Diagnosis
Code Chart).
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Check that the other ECU performing CAN communication with EPS-ECU sets diagnosis code
No. U0131 (Refer to GROUP 54C - CAN Communication-related Diagnosis Code (U-code) Table ).
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Q.
Is the diagnosis code set?
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- Reconfirmation of diagnosis code.
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Confirm again the diagnosis code is set from the AS&G-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 the diagnosis code set?
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After replacing the EPS-ECU, go to Step 6.
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Intermittent malfunction in CAN bus line between AS&G-ECU and EPS-ECU
(Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How
to Cope with Intermittent Malfunctions).
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- Reconfirmation of diagnosis code.
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Confirm again the diagnosis code is set from the AS&G-ECU.
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- Erase the set diagnosis code.
- Ignition switch: "LOCK" (OFF) → "ON"
- Confirm whether the diagnosis code is set.
|
|
Q.
Is the diagnosis code set?
|
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After replacing the AS&G-ECU, go to Step 6.
|
|
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|
Intermittent malfunction in CAN bus line between AS&G-ECU and EPS-ECU
(Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How
to Cope with Intermittent Malfunctions).
|
|
|
|
- Reconfirmation of diagnosis code.
|
|
Confirm again the diagnosis code is set from the AS&G-ECU.
|
|
- Erase the set diagnosis code.
- Ignition switch: "LOCK" (OFF) → "ON"
- Confirm whether the diagnosis code is set.
|
|
Q.
Is the diagnosis code set?
|