Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information CCM-B10874A

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:
- The configuration-id for some control module connected to the bus does not match the expected value.
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
- Incorrect configuration ID (the control module is not intended for this vehicle, for example it is a used control module with different software/hardware).

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