DTC : B2A10-14

DTC B2A10-14  : Brake Light Drive Relay Circuit Malfunction

NOTE:  Before you troubleshoot, review the general troubleshooting information - Refer to:

1. VSA system DTCs check

   - 1. Turn the vehicle to the ON mode.

   - 2. Check for VSA system DTCs with the HDS.

   DTC Description	DTC	Freeze Frame

   Are any DTCs indicated?

   YES 

   Go to the indicated DTC's troubleshooting How to Troubleshoot the VSA System .

   NO 

   Go to step 2.

2. Problem verification

   - 1. Clear the DTC with the HDS.

   Clear DTCs

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

   - 3. Select ADAPTIVE CRUISE CONTROL (ACC) from the DRIVING SUPPORT menu, then enter ACC RELAY from the FUNCTION TEST menu.

   - 4. Do the brake light relay function test with the HDS.

   - 5. Check for DTCs with the HDS.

   Is DTC B2A10-14 indicated?

   YES 

   Check for loose terminals and poor connections in the multipurpose camera unit 20P connector. If they are OK, replace the Multipurpose Camera Unit .

   NO 

   Intermittent failure, the system is OK at this time. Go to intermittent failures troubleshooting - Refer to:

   How to Troubleshoot the Adaptive Cruise Control (ACC) (2016 2017 2018) or

   How to Troubleshoot the Adaptive Cruise Control (ACC) (2019 2020 2021) .

   If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the Freeze data/on-board snapshot.