SRS System

Control System DTCs

SRS DTC Troubleshooting: B2-2x, B2-9x, B2-Ax, B2-Bx

DTC B2-2x, B2-9x, B2-Ax, B2-Bx ("x" can be 0 thru 9 or A thru F) : Internal Failure of the Rear Safing Sensor

NOTE:
* Before doing this troubleshooting procedure, find out if the vehicle was in a collision. If so, verify that all the required components were replaced with new components, of the correct part number, and that they were properly installed Service and Repair.
* Before doing this troubleshooting procedure, review SRS Precautions and Procedures Service and Repair and General Troubleshooting Information Reading and Clearing Diagnostic Trouble Codes.
* Before replacing the SRS unit, check the SRS unit software version with the HDS. If the software version is not the latest, update the SRS unit software Programming and Relearning, and retest.


1. Problem verification:

-1. Clear the DTCs with the HDS Reading and Clearing Diagnostic Trouble Codes.

-2. Turn the ignition switch to ON (II), then wait for 10 seconds.

-3. Check for DTCs with the HDS Reading and Clearing Diagnostic Trouble Codes.

Is DTC B2-2x, B2-9x, B2-Ax, or B2-Bx indicated?
-YES- Replace the rear safing sensor Service and Repair, then clear the DTC, and retest. If the DTC is still present, replace the SRS unit Service and Repair.
-NO- Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures Reading and Clearing Diagnostic Trouble Codes. If another DTC is indicated, troubleshoot the DTC.