DTC : B1C70

DTC B1C70  : Driver's Main Heater Switch Failure

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 - Go to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks .
• 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. Check for DTCs with the HDS.

   DTC Description	DTC
   B1C70 Driver's main heater switch failure

   Is DTC B1C70 indicated?

   YES 

   Replace the Ventilated Seat Control Unit - Removal and Installation .

   NO 

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