12-Volt Power Down
Because the high-voltage battery is used to charge the 12-volt battery via the power inverter module (PIM), disconnecting the 12-volt battery negative cable alone will not power down the 12-volt system. The following procedure must be carried out before any repairs, disassembly, or testing requiring 12-volt power down are carried out.
Even though the high-voltage battery manual service disconnect is removed during the 12-volt Power Down procedure, the 12-volt Power Down procedure will NOT safely and reliably power down the high-voltage system. If any high-voltage components are to be accessed, disconnected or tested, the High-Voltage Power Down procedure must first be carried out. Refer to ELECTRIC VEHICLE CONTROL SYSTEM, STANDARD PROCEDURE .
- Turn the ignition to the OFF position, and wait five minutes to allow the high-voltage system to shut down without setting a fault code.
- Pull the rear seat cushion release strap (1), and position the rear seat cushion (2) away from the high-voltage manual service disconnect cover.
- Release the tab (1) and position the high-voltage manual service disconnect cover (2) aside.
- Release the locking tab and position the high-voltage manual service disconnect release lever (1) partially upward until it stops. Release the locking tab (2), and position the release lever (1) fully upward until the high-voltage manual service disconnect latch (3) is fully disengaged.
- Lift out, and remove the high-voltage battery manual service disconnect.
- Disconnect the negative 12-volt battery cable from the 12-volt battery.
- The 12-volt electrical system is now powered down.