Code No.B1703: Transponder ID unmatched
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Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.
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When the key ID that is sent from the transponder does not correspond to the key ID registered in the ETACS-ECU, the ETACS-ECU stores diagnosis code No.B1703.
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Diagnosis code No.B1703 is always stored along with MPI system diagnosis code No.P0513.
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- Ignition key (key ID) is not registered
- Malfunction of ETACS-ECU
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Register all the ignition key IDs again, and recheck the diagnosis code.
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(1)Register all the ignition keys again (Refer to  ).
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(2)Turn the ignition switch from the "LOCK" (OFF) position to the ON position.
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(3)Check that diagnosis code No.B1703 is not stored again.
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Q.
Is diagnosis code No.B1703 stored?
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 Replace the ETACS-ECU. After registering the ID codes, check if the diagnosis code is stored.
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 The diagnosis is complete. If another diagnosis code is stored, refer to Diagnosis Code Chart .
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