Checking Components
- Ignition off
- Disconnect connector A for the seat heating module (SHM) right
- Ignition on.
The climate control module (CCM) has detected that a component on LIN bus 2 is transmitting incorrect data and disrupting communication on the LIN bus.
Check the communication by disconnecting the seat heating module (SHM) right.
If other control modules on LIN bus 2 now function, replace the seat heating module (SHM) right.
Was a fault detected?
- YES
Refer to Verification
- NO
Refer to Checking Components
- Ignition off
- Reconnect connector A for the seat heating module (SHM)
- Ignition on.
Check the components on the climate control unit as follows:
- Disconnect the connectors for the components one at a time
- Check whether the other components regain functionality, for example by activating seat heating
- If the functionality for the other components returns, the fault is probably in the disconnected components.
Remedy as necessary.
Other information:
- For further information about the connectors, fuses and relays, see the appropriate SYSTEM WIRING DIAGRAM article.
- See Connecting the Breakout Box
- See Signal Specification
- See Climate Control, Location Of Components
- See Damper Motor Defroster, Replacing
- See Damper Motor Temperature, Replacing
- See Damper Motor Recirculation, Replacing
- See Air Quality Sensor, Replacing
- See Climate Control Module (CCM), Replacing
- See Seat Heating Module (SHM), Replacing
- See Contents
- Continue