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Use M.U.T.-III to perform the CAN bus diagnosis.
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Q.
Is the check result normal?
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Repair the CAN bus lines (Refer to GROUP 54C - Troubleshooting ). Then go to Step 6.
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Check if diagnosis code No.U1195 is stored (Refer to ).
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Q.
Is the diagnosis code stored?
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Perform the relevant troubleshooting.
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Check the ETACS diagnosis code (Refer to GROUP 54A - Troubleshooting ).
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Q.
Is the diagnosis code stored?
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Perform the relevant troubleshooting.
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Check the ETACS data list below (Refer to GROUP 54A - ETACS ).
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- Item No.252: Ambient temperature sensor
- Item No.254: IG voltage
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Q.
Is the check result normal?
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Replace the ETACS-ECU. (Refer to GROUP 54A - ETACS-ECU .) Then go to Step 5.
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Q.
Is diagnosis code No.U0431 stored?
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Replace the 4WD-ECU (Refer to ). Then go to Step 6.
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Intermittent malfunction. (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
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Q.
Is diagnosis code No.U0431 stored?
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This diagnosis is complete.
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