1. First remove ignition key and put somewhere safe away from the vehicle.
2. Disconnect the 12V battery - this will cause the BSM (Battery Smart Module) to isolate the HV battery outputs.
3. Put on safety gloves and remove the orange service interlock on the HV battery.
4. Wait 10 minutes.
5. Remove the inverter cover and use a digital voltmeter to confirm 0V on the HV leads.
6. We also disconnect the airbag and ABS ECU's if welding..