DTC Troubleshooting: B2800-49, B2801-49, B2802-49, U3000-49

DTC B2800-49, B2801-49, B2802-49, U3000-49: Internal Failure of the SRS Unit

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 troubleshooting any of these DTCs, check the 12 volt battery/system voltage and 12 volt battery cable connections. If the voltage is low, repair the charging system, test and charge the 12 volt battery, or replace the 12 volt battery before troubleshooting the SRS. If the 12 volt battery/system voltage is OK, ask the customer if the 12 volt battery ever went dead or if the engine was started and run with the 12 volt battery in a low state of charge. A dead 12 volt battery may trigger one or more of these DTCs.
	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
B2800-49 Internal failure of the SRS unit
B2801-49 Internal failure of the SRS unit
B2802-49 Internal failure of the SRS unit
U3000-49 Internal failure of the SRS unit

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
B2800-49 Internal failure of the SRS unit
B2801-49 Internal failure of the SRS unit
B2802-49 Internal failure of the SRS unit
U3000-49 Internal failure of the SRS unit

Is DTC B2800-49, B2801-49, B2802-49, or U3000-49 indicated?

The failure is duplicated. 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.?