1. Check resistance between the No. 15 and No. 27 terminals of SRS unit connector A (28P). There should be 1Ω or less.

Is the resistance as specified?

YES | - | Faulty left front impact sensor or SRS unit. Replace the left front impact sensor; if the problem is still present, replace the SRS unit. ■
NO | - | Faulty engine compartment wire harness or dashboard wire harness; replace the faulty harness.■