Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information CCM-B108754

Condition
Climate control module (CCM) both sends and receives information via standardized serial communication - LIN (Local Interconnect Network). Climate control module (CCM) checks status of LIN-bus 1 and 2. After repair, software downloading or replacement of components, the system must be calibrated.
The diagnostic trouble code (DTC) is stored if the control module detects that:
- New software is downloaded to the control module. Calibration not completed.

Note! For frozen values, from original read-out, to show correct values after a software download the control module has to be calibrated.

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
- Calibration not performed.

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