Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information CCM-B108883

Condition
Climate control module (CCM) both sends and receives information via standardized serial communication - LIN (Local Interconnect Network). Climate control module (CCM) checks the status of LIN-bus 2. The following components communicate on LIN bus 2:
- Damper motor module (DMM) temperature right.
- Damper motor module (DMM) defroster.
- Seat heating module (SHM), front right Only applies if there is no seat heating module (SHM) ventilation.
- Seat heating module (SHM), right ventilation Option/accessory
- Seat heating module (SHM), rear right. Option/accessory
- Humidity sensor. Option/accessory
The diagnostic trouble code (DTC) is stored if the control module detects that:
- Received message does not correspond with expected message.
- Two or more LIN nodes have the same network ID.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Ignition switch position II.





Substitute value
- None.

Possible source
- Communication interference.
- There are two Damper motor modules (DMM) with the same ID installed in the vehicle. For example, Damper motor module (DMM) recirculation can be installed in the location of Damper motor module (DMM) air distribution.

Fault symptom[s]
- Mist on rear window and door mirrors
- Poor heating in compartment
- Temperature control/Uneven temperature
- Front seat heating does not operate
- Rear seat heating does not operate