DTC B1C62

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 B1C62 : Passenger's Heater Current Abnormal High

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

DTC Description	DTC
B1C62 Passenger's heater current abnormal high

DTC (Front Seat Heater 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
B1C62 Passenger's heater current abnormal high

Is DTC B1C62 indicated?

YES

Go to step 2.

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

Determine possible failure area (front passenger's seat heater, others)

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

-2. Disconnect the following connector.

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

-3. Clear the DTCs with the HDS.

-4. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.

-5. Turn the front passenger's seat heater switch ON.

-6. Check for DTCs with the HDS.

DTC Description	DTC
B1C62 Passenger's heater current abnormal high

Is DTC B1C62 indicated?

YES

Go to step 3.

Go to step 4.

Shorted wire check (HEATER AS line)

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

-2. Disconnect the following connector.

Front seat heater control unit 24P connector

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

Test condition	Vehicle OFF (LOCK) mode Front seat heater control unit 24P connector: disconnected Front passenger's seat heater connector A (4P): disconnected
Test point 1	Front seat heater control unit 24P connector No. 3
Test point 2	Body ground

Is there continuity?

YES

Repair a short in the HEATER AS wire.

Replace the front seat heater control unit .

DTC check

-1. Reconnect the following connector.

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

-2. Disconnect the following connector.

Front passenger's heater connector B (2P)

-3. Clear the DTCs with the HDS.

-4. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.

-5. Turn the front passenger's seat heater switch ON.

-6. Check for DTCs with the HDS.

DTC Description	DTC
B1C62 Passenger's heater current abnormal high

Is DTC B1C62 indicated?

YES

Replace the front passenger's seat cushion heater .

Replace the front passenger's seat-back heater .