DTC B20A2

DTC B20A2  : HSW Not Heating

DTC (Gauge Control Module)

NOTE: 

• SRS components are located in this area. Review the SRS component locations , and precautions and procedures before doing repairs or servicing.
• After testing, clear the SRS control unit DTCs.
• DTC B20A2 is stored when the steering heater is not warm to the preset temperature even after 60 minutes.
• Connect a jumper battery (do not connect a battery charger).

1. Problem verification 1

   -1. Clear the DTCs with the HDS.

   -2. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.

   -3. Press the heated steering wheel button.

   -4. Wait for at least 60 minutes.

   -5. Check for DTCs with the HDS.

   DTC Description	DTC
   B20A2 HSW Not Heating

   Is DTC B20A2 indicated?

   YES 

   Go to step 2.

   NO 

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

2. Problem verification 2

   -1. Clear the DTCs with the HDS.

   -2. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.

   -3. Press the heated steering wheel button.

   -4. Check for DTCs with the HDS.

   DTC Description	DTC
   B20A0 HSW Temperature Sensor Open/Short
   B20A1 HSW Current Abnormal

   Is DTC B20A0 and/or B20A1 indicated?

   YES 

   Go to the indicated DTC troubleshooting.

   NO 

   Go to step 3.

3. Heated steering wheel temperature sensor check

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

   -2. Do the heated steering wheel temperature sensor check .

   Is the heated steering wheel temperature sensor OK?

   YES 

   Go to step 4.

   NO 

   Faulty steering wheel temperature sensor, replace the steering wheel assembly .

4. Steering heater check

   -1. Do the steering heater check .

   Is the steering heater OK?

   YES 

   Replace the heated steering wheel control unit .

   NO 

   Faulty steering heater, replace the steering wheel assembly .