Before replacing the ECU, ensure that the power supply circuit, the ground circuit and the communication circuit are normal.
TROUBLE JUDGMENT
If the chassis number is not written to the ETACS-ECU, the ETACS-ECU sets DTC B1761.
TROUBLESHOOTING HINTS
Chassis No. not programmed
Malfunction of the ETACS-ECU
DIAGNOSIS
1. If no chassis number is stored in the ETACS-ECU, check whether a chassis number is stored in the engine control module (Refer to GROUP 13A - DTC P0630 "VIN not Programmed" ).
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).