1. Check resistance between the No. 1 terminal of under-dash fuse/relay box connector S (2P) and the No. 17 terminal of SRS unit connector A (28P). There should be 0−1.0 Ω.

Is the resistance as specified?

YES | - | Open in the under-dash fuse/relay box or poor contact between connector S (2P) and the under-dash fuse/relay box; check the connection. If the connection is OK, replace the under-dash fuse/relay box.■
NO | - | Open in dashboard wire harness; replace the dashboard wire harness.■