Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information FSM-U000188

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:
- Incorrect message sent/received on the HS-CAN network.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Ignition switch position II.
- Control module supplied with power.

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
- Control module shuts itself off ("bus-off").

Hint: The control module is off until the power supply has been broken. When the power supply is connected the control module will make a new attempt to communicate.

Possible source
- Contact resistance or oxidation in the connectors.
- Open-circuit in one or both CAN cables in part of the network.

Fault symptom[s]
- IV, Text window and warning symbol/Text message
- 1S, Front monitoring/Active safety/Driver Alert Control does not work
- 1R, Front monitoring/Active safety/Lane Departure Warning does not work
- AQ, Cruise control/Does not engage
- 1T, Warning lights and chimes/Front monitoring/Active safety indication/no indication
- CJ, Warning lights and chimes/Bulb failure indication/no indication
- 5B, Road Sign Information (RSI)/Does not work
- 5A, Lane Keeping Aid (LKA)/Does not work