Code No.B1761 Chassis No. not programmed
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- Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.
- When the ETACS-ECU of vehicles without KOS is replaced, the encrypted code of the ignition key needs to be registered to the ETACS-ECU. (If the encrypted code is not registered, the engine cannot be started. Register the encrypted code as described in Immobilizer System - How to Register Key ID
.)
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JUDGMENT CRITERIA
If the chassis number is not written to the ETACS-ECU, the ETACS-ECU sets diagnosis code No. B1761.
PROBABLE CAUSES
- Chassis No. not programmed
- Malfunction of the ETACS-ECU
DIAGNOSIS PROCEDURE
Check whether the diagnosis code is reset.
Check again if the diagnosis code is set to the ETACS-ECU.
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(1)Erase the diagnosis code.
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(2)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
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(3)If no chassis number is stored in the ETACS-ECU, check whether a chassis number is stored in the engine-ECU.(Refer to GROUP 13A - Diagnosis code No.P0630 "Chassis Number not Programmed" ).
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(4)Check if diagnosis code is set.
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Q.
Is the diagnosis code set?
Replace the ETACS-ECU.
The diagnosis is complete.