STEP 3. Voltage measurement at BSW-ECU (master) connector terminal IG.
(1) Disconnect the connector, and measure at the wiring harness side.
(2) Turn the ignition switch from the "LOCK" (OFF) position to the "ON" position.
(3) Check the voltage between the BSW-ECU (master) connector terminal IG and body ground.OK: Is the measured voltage approximately 12 volts (battery positive voltage)
Is the check result normal?
Go to Step 4. Repair the power supply circuit {between the BSW-ECU (master) and ETACS-ECU}.