DTC B1-Ax

DTC B1-84, B1-85, B1-86, B1-90, B1-Ax (B1-A0 to B1-A9, B1-AA to B1-AF), B1-Bx (B1-B0 to B1-B9, B1-BA to B1-BF): Internal Failure of the Roll Rate Sensor

1. Erase the DTC memory.
2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

Does the SRS indicator stay on, and is B1-84, B1-85, B1-86, B1-90, B1-Ax, or B1-Bx indicated?

YES - Replace the roll rate sensor. If the DTC returns, replace the SRS unit.

NO - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures. Diagnostic Strategies If another DTC is indicated, go to the DTC Troubleshooting Index. DTC List - Supplemental Restraint System