DTC Troubleshooting: B0090-4A, B0090-92

DTC B0090-4A, B0090-92: Internal Failure of the Left Front Impact 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 were properly installed.
	Before doing this troubleshooting procedure, review SRS Precautions and Procedures and General Troubleshooting Information.
	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, and retest.

DTC Description	DTC
B0090-4A Internal failure of the left front impact sensor
B0090-92 Internal failure of the left front impact sensor

Problem verification:

Problem verification

?1.	Clear the DTCs with the HDS.

?2.	Turn the vehicle to the ON mode, then wait for 10 seconds.

?3.

Check for DTCs with the HDS.

DTC Description	DTC
B0090-4A Internal failure of the left front impact sensor
B0090-92 Internal failure of the left front impact sensor

Is DTC B0090-4A or B0090-92 indicated?

The failure is duplicated. Replace the left front impact sensor, then clear the DTC, and retest. If the DTC is still present, replace the SRS unit.?

Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. If another DTC is indicated, troubleshoot the DTC.?