DTC 55-3x (55-30 to 55-39, 55-3A to 55-3F),55-4x (55-40 to 55-49, 55-4A to 55-4F), 55-7x (55-70 to 55-79, 55-7A to 55-7F): 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 55-3x, 55-4x or 55-7x 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.