Air Bag Control Module: Testing and Inspection

To inspect and service the SRS after a collision (whether or not the air bags have deployed), perform the following steps.

SRS-ECU MEMORY CHECK
1. Connect the scan toot to the data link connector (16-pin).

CAUTION: Turn off ignition switch before connecting or disconnecting the scan tool.

2. Read (and write down) all displayed diagnostic trouble codes.

NOTE: If the battery power supply has been disconnected or disrupted by the collision, the scan tool cannot communicate with the SRS-ECU. Check the battery, then inspect and, if necessary, repair the body wiring harness before proceeding.

Data List:

3. Read the data list (fault duration and how many times memories are erased) using the scan tool.
4. Erase the diagnostic trouble codes and after waiting five seconds or more read (and write down) all displayed diagnostic trouble codes.

SRS AIR BAG CONTROL UNIT (SRS-ECU) INSPECTION
- Check the SRS-ECU and brackets for dents, cracks or deformation.
- Check the SRS-ECU connector for damage, and terminals for deformation.

CAUTION: If a dent, crack, deformation or rust is discovered, replace the SRS-ECU with a new one.

NOTE: Refer to inspection of SRS-ECU for other than physical damage.