DTC Troubleshooting: 54-1x, 54-2x, 54-3x, 54-4x

DTC 54-1x (54-10 to 54-19, 54-1A to 54-1F),54-2x (54-20 to 54-29, 54-2A to 54-2F),54-3x (54-30 to 54-39, 54-3A to 54-3F),54-4x (54-40 to 54-49, 54-4A to 54-4F): Internal Failure of the SRS Unit NOTE: 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. Erase the DTC memory. 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 DTC 54-1x, 54-2x, 54-3x or 54-4x indicated?
YES | - | Replace the SRS unit. ■
NO | - | Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures. If another DTC is indicated, go to the DTC troubleshooting index for troubleshooting details.