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DTC B1C68 (Ventilated Seat Control Unit)

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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 .
DTC Description DTC
B1C68 Driver's heater not heating  

DTC (Ventilated Seat 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. Turn the driver's seat heater switch ON.

    -4. 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 .