Diagnostic Trouble Code (DTC) Information
Condition
The Headlamp Control Module (HCM) both transmits and receives information via a standardized serial communication method - LIN (Local Interconnect Network). The control module checks the communication with the Left headlamp control unit (LHCU).
The diagnostic trouble code (DTC) is stored if the control module detects that:
- No communication with the Left headlamp control unit (LHCU).
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
- The signal cable is short-circuited to ground.
- Short-circuit to supply voltage in the signal cable.
- Contact resistance, oxidation or open-circuit in the terminals.
Fault symptom[s]
- Active Bi-Xenon light; No Functionality
- Message in information display
- Indicator lamp Active Bi-Xenon light; Flashing