Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC B22A1: Wireless Charger Unit ACC Input Circuit Failure
| DTC Description | DTC |
|---|---|
| B22A1 Wireless Charger Unit ACC Input Circuit Failure |
DTC (Wireless Charger)
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 (2015-17), or Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks (2018-19) .
- 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 6 seconds.
- 4. Check for DTCs with the HDS.
DTC Description DTC B22A1 Wireless Charger Unit ACC Input Circuit Failure Is DTC B22A1 indicated?
YES
Go to step 2.
NO
Intermittent failure, the system is OK at this time. Check for loose or poor connections.
- Open wire check (ACC line)
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the following connector.
Wireless charger 7P connector - 3. Turn the vehicle to the ACCESSORY mode.
- 4. Measure the voltage between test points 1 and 2.
Test condition Vehicle ACCESSORY mode Wireless charger 7P connector: disconnected
Test point 1 Wireless charger 7P connector No. 6 Test point 2 Body ground Is there battery voltage?
YES
The ACC wire is OK, replace the wireless charger .
NO
An open or poor connection in the ACC wire between the No. B37 (7.5 A) fuse and the wireless charger.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.