STEP 3. Voltage measurement at HUD connector (IG1 terminal).
(1) Disconnect the 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 HUD connector (IG terminal) and body ground.OK: The voltage should measure approximately 12 volts (battery positive voltage)
Is the check result normal?
Go to Step 4. Correct the power supply circuit between the HUD connector and the power supply (IG1 terminal).