Restraints - Advanced Air Bag Diagnostics

DTC B1021 (No.1021): Front Air Bag Module Deployed

DTC Will Set when
The SDM detects a frontal crash of sufficient force to warrant activation of the air bag system. (SDM outputs a deployment command.)

Flow Test Description
Step 1: Check that DTC B1021 has been set although air bag has not been deployed.
Step 2: Check that DTC has been set due to failure of SDM.

NOTE: Before executing items in this flow, be sure to perform Air Bag Diagnostic System Check:Advanced Air Bag. Air Bag Diagnostic System Check

Step 1 - 2:

DTC Troubleshooting