Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information HCM-B104301

Condition
The Headlamp Control Module (HCM) checks the signal from the position sensors.
The diagnostic trouble code (DTC) is stored if the control module detects that:
- Incorrect signal from front position sensor.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Ignition switch position II.

Note! The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.





Substitute value
- Shortest headlamp range will be used.

Possible source
- Short-circuit to battery voltage in the signal cable to the front / rear position sensor.
- Short-circuit to ground in the signal cable to the front / rear position sensor.
- Open-circuit in the signal cable to the front / rear position sensor.
- Damaged sensor.

Fault symptom[s]
- Automatic vertical aim control does not work
- Active Bi-Xenon light; No Functionality
- Text window and warning symbol/Text message