Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information CCM-B108888

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:
- Open circuit on LIN-bus 2.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Ignition switch position I and II.





Substitute value
- None.

Possible source
- Short-circuit to ground.
- Short-circuit to supply voltage.

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