Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information FSM-U000155

Condition
The control modules transmit and receive information via a standardized serial communication method - CAN (Control Area Network).
The diagnostic trouble code (DTC) is stored if the control module detects that:
- Signal configuration ID in forward sensing module (FSM) differs from the signal configuration ID that the central electronic module (CEM) transmits.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Ignition position II and III.

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
- Incorrect configuration ID (the control module is not intended for this vehicle, for example it is a used control module with different software/hardware).

Fault symptom[s]
- IV, Text window and warning symbol/Text message
- 1T, Warning lights and chimes/Front monitoring/Active safety indication/no indication
- AQ, Cruise control/Does not engage
- 1S, Front monitoring/Active safety/Driver Alert Control does not work
- Collision avoidance driver support; No Functionality
- DC, Headlights/Headlight aim is off