Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information CCM-E001

Condition




The control modules transmit and receive information via a standardized serial communication method - CAN (Controller Area Network). The diagnostic trouble code (DTC) is stored if the control module registers serious interference (CAN communication blocked).

Note! 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
- The control module shuts itself off ("bus-off").

Hint: The control module will remain shut off until the power supply is broken (15, 30, X). When the power supply is connected the control module will make a new attempt to communicate.

Possible source
- Short-circuit between the control area network (CAN) wiring
- Open-circuit in the control area network (CAN) wiring
- Internal fault in the control module
- Internal fault in another control module in the same part of the control area network (CAN).

Note! In the event of missing CAN communication, but with the power supply still on, the climate control module (CCM) will function for a few minutes after the key has been removed (Limp-home function).

Fault symptom[s]
- The climate control system functions after the key has been removed
- The lower row of buttons on the climate control system does not function
- The air conditioning (A/C) compressor does not start, or runs sporadically
- Misting on the windows and/or door mirrors
- Does not deadlock
- Does not open from deadlock
- Private locking of the trunk lid does not function. (S80, S60)
- Temporary disengagement of the detectors is not possible.