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 - Go to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks .
• The front seat heater control unit does not turn on the seat heater until the seat core temperature is 85 degrees or less. Make sure the seat core temperature is below 85 degrees before troubleshooting.

DTC (Front Seat Heater Control Unit)

1. Problem verification

   -1. Clear the DTCs with the HDS.

   Clear DTCs

   - 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 heater connector A (6P)

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

   Terminal A	Front passenger's seat heater connector A (6P) (male terminals) No. 4: (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.

   Clear DTCs

   - 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 PS HT wire.

   NO 

   Go to step 3.

3. Seat heater check

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

   Test condition	Vehicle OFF (LOCK) mode Front passenger's seat heater connector A (6P): disconnected
   Test point 1	Front passenger's seat heater connector A (6P) (female terminals) No. 4: (1)
   Test point 2	Front passenger's seat heater connector A (6P) (female terminals) No. 1: (1)

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

   Is there more than 4.27 (with leather seat) or 4.59 (without leather seat) Ω (at 23 °C)?

   YES 

   Replace the front passenger's Seat Cushion Heater or Seat Cushion Heater - Ventilated Seats .

   NO 

   Go to step 4.

4. Open wire check (BACK HTR line)

   -1. Disconnect the following connector.

   Front passenger's seat heater connector B (2P)

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

   Terminal A	Front passenger's seat heater connector A (6P) (male terminals) No. 6: (1)
   Terminal B	Body ground

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

   - 3. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode Front passenger's seat heater connector A (6P): disconnected Front passenger's seat heater connector B (2P): disconnected
   Test point 1	Front passenger's seat heater connector B (2P) (male terminals) No. 1: (1)
   Test point 2	Body ground

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

   Is there continuity?

   YES 

   Replace the front passenger's Seat-Back Heater or Seat-Back Heater - Ventilated Seats .

   NO 

   Repair an open or high resistance in the BACK HTR wire.