VOLTAGE CONVERTER VOLTAGE ABNORMALITY (DTC CODE B1121 / DIAGNOSIS MONITORCODE16)

Possible cause

Air bag ECU inside abnormality

This indicates a malfunction inside of the air bag ECU. The air bag ECU must be replaced. If deletion of past malfunctions succeeded in recovering a proper state, it is not required to take further actions. If this malfunction code is indicated again, replace the ECU.

DTC Clear

Detail

Confirm the DTC B1121 is inactive

Start the engine and let it idling condition.
Verify the DTC B1121 is inactive.

DTC Clear

Clear the DTC with Hino DX
Confirm the same DTC is not reoccurred

B1121 is reoccur: Return to first process
Other DTC appear: Refer to concerned Trouble shooting

Complete