CODE NO. L0637:
S/R Position
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Before replacing the ECU,
ensure that the input and output signal circuits are normal.
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COMMENTS ON TROUBLE SYMPTOM
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Current trouble
- If the roof lid glass position is out of the specified area, ETACS-ECU sets the
diagnosis code No. L0637.
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- Malfunction of the sunroof motor assembly
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STEP 1. Check the sunroof fully closed position
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(1)Carry out the learning procedures of the sunroof fully closed position. Refer to .
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(2)Recheck if the diagnosis code is set.
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Erase the diagnosis code.
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Turn the ignition switch from the LOCK (OFF) position to the ON position.
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Check if the diagnosis code is set.
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Q.
Is the check result normal?
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The diagnosis is complete.
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Go to Step 2.
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STEP 2. Diagnosis code recheck
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Recheck if the diagnosis code is set.
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(1)Erase the diagnosis code.
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(2)Turn the ignition switch from the LOCK (OFF) position to the ON position.
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(3)Check if the diagnosis code is set.
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Q.
Is the diagnosis code set?
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Replace the sunroof motor assembly.
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The diagnosis is complete.
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