1) Turn the ignition switch to ON.
2) Measure the voltage between connector (2R) in the test harness R and chassis ground.
Connector & terminal
(2R) No. 1 (+) — Chassis ground (−):
(2R) No. 6 (+) — Chassis ground (−):
Is the voltage 10 V or more?
Repair the harness between the airbag control module and the battery. Or replace the airbag main harness along with the bulkhead harness.