DTC Troubleshooting: B1C71
DTC B1C71: Passenger's Main Heater Switch Failure
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
B1C71 Passenger's Main Heater Switch Failure
  

1.
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
B1C71 Passenger's Main Heater Switch Failure
  

Is DTC B1C71 indicated?

     
YES
     
     
     
     
NO
     
     
     
Intermittent failure, the system is OK at this time. Check for loose or poor connections.?