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Check if diagnosis code is set in the transfer-ECU.
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Q.
Is the diagnosis code set?
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Troubleshoot the transfer-ECU. Refer to .
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Refer to GROUP 26 - Free wheel solenoid valve operation check .
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Q.
Is the check result normal?
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Replace the freewheel solenoid (Refer to GROUP 26 - Differential carrier and free wheeling clutch ).
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Q.
Is the check result normal?
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Repair the connector(s) or wiring harness.
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Check that the freewheel solenoid functions work normally.
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Q.
Is the check result normal?
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The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).
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Replace the transfer-ECU (Refer to ).
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