51-xx

SRS DTC Troubleshooting: 51-xx, 52-xx, 53-xx, 54-xx, 55-xx (x can be 0 thru 9 or A thru F)

DTC 51-xx, 52-xx, 53-xx, 54-xx, 55-xx ("x" can be 0 thru 9 or A thru F):Internal Failure of the SRS Unit

NOTE:

- Before doing this troubleshooting procedure, review SRS Precautions and Procedures Technician Safety Information and General Troubleshooting Information. Initial Inspection and Diagnostic Overview

- Before troubleshooting any of these DTCs, check the battery/system voltage. If the voltage is low, repair the charging system or replace the battery before troubleshooting the SRS. If the battery/system voltage is now OK, ask the customer if the battery ever went dead. A dead battery may trigger one of these DTCs.

1. Clear the DTC memory. Initial Inspection and Diagnostic Overview

2. Turn the ignition switch to 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 DTC 51-xx, 52-xx, 53-xx, 54-xx, or 55-xx indicated?
YES - Replace the SRS unit. SRS Unit Replacement

NO - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures. Initial Inspection and Diagnostic Overview If another DTC is indicated, troubleshoot the DTC.