SRS DTC Troubleshooting: 21-1x
  1. Check resistance between the No. 1 and the No. 2 terminals of SRS unit connector B (28P). There should be 2.0−3.0 Ω.
Is the resistance as specified?
YES -
Faulty SRS unit or poor connection at SRS unit connector B (28P) and the SRS unit. Check the connection; if the connection is OK, replace the SRS unit. ■
NO -
Open or increased resistance in the floor wire harness; replace the floor wire harness.■