DTC U1280 (Ventilated Seat Control Unit)

DTC U1280  : Seat heater control unit communication bus line error (BUS-OFF) (front seat)

DTC (Ventilated Seat Control Unit)

NOTE: 

• If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A .
• The ventilated seat control unit does not turn on the seat heater until the seat core temperature is 85 degrees or less. Make sure the seat core temperature is below 85 degrees before troubleshooting.

1. Problem verification

   -1. Clear the DTCs with the HDS.

   Clear DTCs

   -2. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.

   -3. Wait for at least 6 seconds.

   -4. Check for DTCs with the HDS.

   DTC Description	DTC
   U1280 Seat heater control unit communication bus line error (BUS-OFF) (front seat)

   Is DTC U1280 indicated?

   YES 

   Go to MICU DTC U1280 troubleshooting .

   NO 

   Intermittent failure, the system is OK at this time. Check for loose or poor connections.