DTC B1FAD
DTC B1FAD : Right rear heater current abnormal high (second row seat)
| DTC Description | DTC |
|---|---|
| B1FAD Right rear heater current abnormal high (second row seat) |
DTC (Second Row Seat Heater Control Unit)
- 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 (2014 2015 2016) or Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks (2017 2018 2019 2020) .
- 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.
- 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 B1FAD Right rear heater current abnormal high (second row seat) Is DTC B1FAD indicated?
YES
Go to step 2.
NO
Intermittent failure, the system is OK at this time. Check for loose or poor connections.
- DTC check 1
-1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the following connector.
Right second row seat heater connector B (3P) - Refer to: Seat Heater Replacement(Seat Heaters), or Seat Heater Replacement - Ventilated Seats(Ventilated Seats), or Seat Heater Replacement (2017 2018 2019 2020) - 3. Turn the vehicle to the ON mode.
- 4. Clear the DTCs with the HDS.
- 5. Check for DTCs with the HDS.
DTC Description DTC B1FAD Right rear heater current abnormal high (second row seat) Is DTC B1FAD indicated?
YES
Go to step 3.
NO
Go to step 4.
- Short wire check (RR R HEATER line)
-1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the following connector.
Second row seat heater control unit 14P connector - 3. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) modeSecond row seat heater control unit 14P connector: disconnectedRight second row seat heater connector B (3P): disconnected Test circuit RR R HEATER Test point 1 Second row seat heater control unit 14P connector No. 3 (LT BLU) Test point 2 Body ground Is there continuity?
YES
Repair a short in the wire.
NO
- Short wire check (HTR CUSH TO BACK line)
-1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the following connector.
Right second row seat heater connector A (4P) - Refer to: Seat Heater Replacement(Seat Heaters), or Seat Heater Replacement - Ventilated Seats(Ventilated Seats), or Seat Heater Replacement (2017 2018 2019 2020) - 3. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) modeSecond row seat heater control unit 14P connector: disconnectedRight second row seat heater connector A (4P): disconnectedsecond row seat heater connector B (3P): disconnected Test circuit HTR CUSH TO BACK Test point 1 Right second row seat heater connector B (3P) No. 2 (BLU) Test point 2 Body ground Is there continuity?
YES
Repair a short in the wire.
NO
Go to step 5.
- DTC check 2
-1. Reconnect the following connector.
Right second row seat heater connector B (3P) - Refer to: Seat Heater Replacement(Seat Heaters), or Seat Heater Replacement - Ventilated Seats(Ventilated Seats), or Seat Heater Replacement (2017 2018 2019 2020) - 2. Turn the vehicle to the ON mode.
- 3. Clear the DTCs with the HDS.
- 4. Check for DTCs with the HDS.
DTC Description DTC B1FAD Right rear heater current abnormal high (second row seat) Is DTC B1FAD indicated?
YES
Replace the right second row seat-back cushion heater - Refer to: Seat Heater Replacement(Seat Heaters), or Seat Heater Replacement - Ventilated Seats(Ventilated Seats), or Seat Heater Replacement (2017 2018 2019 2020) .
NO
Replace the right second row seat cushion heater - Refer to: Seat Heater Replacement(Seat Heaters), or Seat Heater Replacement - Ventilated Seats(Ventilated Seats), or Seat Heater Replacement (2017 2018 2019 2020) .