Checking components
- Ignition off
- Disconnect connector A for the seat heating module (SHM) left
- Ignition on.
The climate control module (CCM) has detected that a component on LIN bus 1 is transmitting incorrect data and disrupting communication on the LIN bus.
Check the communication by disconnecting the seat heating module (SHM) left.
If other control modules on LIN bus 1 now function, replace the seat heating module (SHM) left.
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:
- See Connecting the breakout box
- See Signal specification
- See Climate control, location of components
- See Dashboard environment panel (including climate control module (CCM)), replacing
- See Damper motor module (DMM) air distribution, replacing
- See Damper motor temperature, replacing
- See Damper motor, recirculation, replacing
- -2001 see Replacing the air quality sensor
- 2002- see Replacing the air quality sensor .
- See Seat heating module (SHM), replacing
- See Checking wiring and terminals
- Continue