DTC Troubleshooting: 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 Description	DTC
B1C68 Driver's Heater Not Heating

Problem verification:

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?

Go to step 2.

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

DTC check:

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?