DTC B1C68

DTC B1C68  : Driver's heater not heating

NOTE: 

• If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A .
• The front seat heater control unit does not turn on the front seat heater until the seat core temperature is 185°F (85°C) or less. Make sure the seat core temperature is below 185°F (85°C) before troubleshooting.

DTC (Front Seat Heater Control Unit)

1. Problem verification

   -1. Clear the DTCs with the HDS.

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

   -3. Check for DTCs with the HDS.

   DTC Description	DTC
   B1C68 Driver's heater not heating

   Is DTC B1C68 indicated?

   YES 

   Go to step 2.

   NO 

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

2. DTC check

   -1. Check for DTCs with the HDS.

   DTC Description	DTC
   B1C55 Driver's heater thermistor circuit open
   B1C56 Driver's heater thermistor circuit short
   B1C60 Driver's heater current abnormal high
   B1C61 Driver's heater current abnormal low

   Are DTCs B1C55, B1C56, B1C60, and/or B1C61 indicated?

   YES: DTC B1C55 is indicated

   Go to DTC B1C55 troubleshooting .

   YES: DTC B1C56 is indicated

   Go to DTC B1C56 troubleshooting .

   YES: DTC B1C60 is indicated

   Go to DTC B1C60 troubleshooting .

   YES: DTC B1C61 is indicated

   Go to DTC B1C61 troubleshooting .

   NO 

   Replace the driver's seat cushion heater .