Scan Tool Testing and Procedures

The "SRS Diagnostic System Check" should always be the starting point of any SRS diagnostics. The "SRS Diagnostic System Check" checks for proper "AIR BAG" warning lamp operation and checks for SRS trouble codes using both "Flash Code" and "Scan Tool" Methods.

DIAGNOSTIC CODES

The Sensing and Diagnostic Module (SDM) maintains a history record of all diagnostic codes that have been detected since the SRS codes were last cleared during service.

1. Current Codes - Faults that are presently detected this ignition cycle. Active codes are stored in RAM (Random Access Memory).

2. History Codes - All faults detected s(nce the last time the history fault memory was cleared. History codes are stored in EEPROM (Electronically Erasable Programmable Read only Memory)