DTC B1C63

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 .
• 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
   B1C63 Passenger's Heater Current Abnormal Low

   Is DTC B1C63 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. Turn the vehicle to the OFF (LOCK) mode.

   -2. Disconnect the following connector.

   Front passenger's seat cushion heater 4P connector

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

   Terminal A	Front passenger's seat cushion heater 4P connector No. 1
   Terminal B	Body ground

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

   -4. Turn the vehicle to the ON mode.

   -5. Clear the DTCs with the HDS.

   -6. 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 +B HEATER(AS) wire.

   NO 

   Go to step 3.

3. Seat heater check

   -1. Disconnect the following connector.

   Front passenger's seat-back heater 2P connector

   -2. Measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode Front passenger's seat cushion heater 4P connector: disconnected Front passenger's seat-back heater 2P connector: disconnected
   Test point 1	Front passenger's seat cushion heater 4P connector No. 1
   Test point 2	Front passenger's seat cushion heater 4P connector No. 2

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

   Is there more than 6.1 Ω?

   YES 

   Replace the front passenger's seat cushion heater .

   NO 

   Replace the front passenger's seat-back heater .