DTC B1C58
DTC B1C58 : Front passenger's heater thermistor circuit short
| DTC Description | DTC |
|---|---|
| B1C58 Front passenger's heater thermistor circuit short |
DTC (Front 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. Wait for at least 90 seconds.
- 4. Check for DTCs with the HDS.
DTC Description DTC B1C58 Front passenger's heater thermistor circuit short Is DTC B1C58 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. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the following connector.
Front passenger's seat heater connector A (5P) - Refer to: Seat Heater Replacement (2017 2018 2019 2020), or Seat Heater Replacement (Seat Heaters), or Seat Heater Replacement - Ventilated Seats (Ventilated Seats) - 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 B1C58 Front passenger's heater thermistor circuit short Is DTC B1C58 indicated?
YES
Repair a short in the ASTH+ wire.
NO
Faulty front passenger's seat heater thermistor; replace the front passenger's seat cushion heater - Refer to: Seat Heater Replacement (2017 2018 2019 2020), or Seat Heater Replacement (Seat Heaters), or Seat Heater Replacement - Ventilated Seats (Ventilated Seats) .