Failure Mode L
Failure Mode L: Poor Ground at SRS Unit or Unit Mounting Bolts1. Disconnect the battery negative cable and then the positive cable. Install the short connector (RED) on the airbag, refer to Air Bags and Seat Belts/Air Bags (Supplemental Restraint Systems)/Service and Repair.
Test Harness B Installation And Testing:
2. Connect Test Harness B between the SRS unit and SRS main harness 18-P connector.
Test Harness B Pinout:
3. Check for continuity between the B5, B15 terminals and body ground.
^ If there is continuity, the SRS unit is faulty. Replace it and recheck the voltages according to the Failure Mode Diagnostic Chart. Failure Mode Diagnostic Chart
^ If there is no continuity, there is an open in the SRS unit ground, the SRS unit component grounds, or the SRS main harness is faulty. Check the grounds (check the SRS unit ground wire and mounting bolts) and, if necessary, replace the SRS main harness. Recheck the voltages according to the Failure Mode Diagnostic Chart. Failure Mode Diagnostic Chart