DTC B1C63 (Ventilated Seat Control Unit)

WARNING: This page is about a different car, the 2022 Honda Accord, 2021 Honda Accord, 2020 Honda Accord, 2019 Honda Accord, and 2018 Honda Accord. However, it is still accessible from the selected car via links, so may be relevant.

DTC B1C63 : Passenger's Heater Current Abnormal Low

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A .

DTC Description	DTC
B1C63 Passenger's heater current abnormal low

DTC (Ventilated Seat Control Unit)

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 front passenger's seat heater switch ON.

-4. Check for DTCs with the HDS.

DTC Description	DTC
B1C63 Passenger's heater current abnormal low

Is DTC B1C63 indicated?

YES

Go to step 2.

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

DTC check

-1. Turn the vehicle to the OFF (LOCK) mode.

-2. Disconnect the following connector.

Front passenger's seat heater connector A (4P)

-3. Connect terminals A and B with a jumper wire.

Terminal A	Front passenger's seat heater connector A (4P) (female terminals) No. 1:
Terminal B	Body ground

Courtesy of HONDA, U.S.A., INC.

-4. Clear the DTCs with the HDS.

-5. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.

-6. Turn the front passenger's seat heater switch ON.

-7. Check for DTCs with the HDS.

DTC Description	DTC
B1C63 Passenger's heater current abnormal low

Is DTC B1C63 indicated?

YES

Repair an open or high resistance in the HEATER AS wire.

Go to step 3.

Seat heater check
-1. Test the passenger's seat heater .

Are the passenger's seat cushion heater and the passenger's seat-back heater OK?

YES

Replace the ventilated seat control unit .

NO

Replace the front passenger's seat cushion heater and/or the front passenger's seat-back heater .