Honda HR-V: DTC B1C56, B1C58

NOTE : Refer to the DTC code shown on the display, and then inspect the connectors and terminals based on the instructions in the table below.

DTC (Front Seat Heater Control Unit)

NOTE :

• If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A - Refer to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks.
• The 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.

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. Wait for at least 90 seconds.
4. Check for DTCs with the HDS.

Is DTC B1C56 or B1C58 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.

Seat cushion heater connector A (4P)

3. Turn the vehicle to the ON mode.
4. Clear the DTCs with the HDS.

Clear DTCs

5. Check for DTCs with the HDS.

Is DTC B1C56 or B1C58 indicated?

YES

Repair a short in the FR DR H/SEAT TH+ or FR AS H/SEAT TH+ wire.

NO

Faulty seat heater thermistor; replace the driver's seat cushion heater or the front passenger's seat cushion heater.

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