STEP 2. Voltage measurement at the SRS-ECU connector (TBAC terminal).
(1) Disconnect the SRS-ECU connector, and measure at the wiring harness side.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(3) Check the voltage between the SRS-ECU connector (TBAC terminal) and body ground.OK: The voltage should measure approximately 12 volts (battery positive voltage).
Is the check result normal?
Replace the SRS-ECU. Go to Step 3.