Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

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:
- Communication on the CAN network is interrupted by another control module on the CAN network or by the control module's own message causing interference on the CAN network.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Starting the control module's CAN communication.

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. In the event of system communication problems, it is not possible to communicate with the control module. Therefore it will only be possible to read off the fault if it is intermittent.





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

Note! 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. Note that the control module may need to be disconnected from the power supply for a long time, up to ten minutes, in order for it to communicate again.

Possible source
- Short-circuit between the control area network (CAN) wiring.
- Open-circuit in the control area network (CAN) wiring.
- Contact resistance or oxidation in the terminals or connections.

Fault symptom[s]
- Doors/Power locking (button in door panel) does not work
- Door trim panels/Interior door lock does not work
- Locking/unlocking/Central locking does not work
- Locking/unlocking/Other central locking problems
- Doors/Child lock/Does not work
- Switch indication/Does not work
- Approach lighting/Does not work
- Side marking lights/Does not work
- Electrical operated window/No/reduced/incorrect function
- Door mirrors/Electrical adjustment does not work
- Defog/defrost/Door mirrors defog/defrost/Does not work
- Door mirrors/Automatic adjustment (memory) does not work
- Rear view mirror/Adjustment does not work