Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information HCM-B1D6701

Condition
The Headlamp Control Module (HCM) communicates with the Right headlamp control unit (RHCU).
The diagnostic trouble code (DTC) is stored if the control module detects that:
- The Right headlamp control unit (RHCU) registers incorrect system voltage.
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
- None.

Possible source
Signal too high:
- The charging system is overcharging.
Signal too low:
- Short-circuit to ground in the power supply cable.
- Open-circuit in the ground lead.

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