Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information CCM-B108786

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 1. The following components communicate on LIN bus 1:
- Damper motor module (DMM) air distribution.
- Damper motor module (DMM) temperature left.
- Damper motor module (DMM) recirculation.
- Seat heating module (SHM), front left Only applies if there is no seat heating module (SHM) ventilation.
- Seat heating module (SHM), left ventilation Option/accessory
- Seat heating module (SHM), rear left Option/accessory
- Switch, rear seat heating. Option/accessory
The diagnostic trouble code (DTC) is stored if the control module detects that:
- Received message does not correspond with expected message.
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 master nodes in LIN bus A.

Fault symptom[s]
- Air flow problem
- No recirculation
- Temperature control/Uneven temperature
- Poor heating in compartment
- Front seat heating does not operate
- Rear seat heating does not operate