Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.
DIAGNOSTIC FUNCTION
If a trouble occurs in headlamp automatic levelling-ECU, headlamp automatic levelling system warnings are displayed on the multi information display and code No. B2512 is set.
JUDGEMENT CRITERIA
The headlamp automatic levelling-ECU detects the data error at EEPROM reading or writing.
PROBABLE CAUSE
Malfunction of the headlamp automatic levelling-ECU